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1211.4742 | i | we consider the statistical problem of functional linear regression ( flr ) . in its standard version , one observes the data @xmath0 where @xmath1 are i.i.d . random variables taking their values in @xmath2)$ ] , that is , the set consisting of all continuous functions on the interval @xmath3 $ ] , and @xmath4 with @x... | we consider the statistical experiment of functional linear regression ( flr ) . moreover , we show equivalence of flr and an empirical version of the white noise model for finite sample sizes . as an application , we derive sharp minimax constants in the flr model which are still valid in the case of unknown design di... | we consider the statistical experiment of functional linear regression ( flr ) . furthermore , we introduce a white noise model where one observes an it process , which contains the covariance operator of the corresponding flr model in its construction . we prove asymptotic equivalence of flr and this white noise model... |
1003.1197 | c | in this paper , we considered the sn shock effects , the msw effects , the collective effects , and the earth matter effects in the detection of type ii sn neutrinos . also , we considered the uncertainties in the neutrino luminosities @xmath3 , their temperatures @xmath4 , and their pinching parameters @xmath5 in the ... | we consider the supernova shock effects , the mikheyev - smirnov - wolfenstein ( msw ) effects , the collective effects , and the earth matter effects in the detection of type ii supernova neutrinos on the earth . it is found that the event number of supernova neutrinos depends on the neutrino mass hierarchy , the neut... | we consider the supernova shock effects , the mikheyev - smirnov - wolfenstein ( msw ) effects , the collective effects , and the earth matter effects in the detection of type ii supernova neutrinos on the earth . it is found that the event number of supernova neutrinos depends on the neutrino mass hierarchy , the neut... |
1409.6855 | i | origami manifolds appeared in differential geometry recently as a generalization of symplectic manifolds @xcite . toric origami manifolds are in turn generalizations of symplectic toric manifolds . toric origami manifolds are a special class of @xmath0-dimensional compact manifolds with an effective action of a half - ... | we construct quasitoric manifolds of dimension 6 and higher which are not equivariantly homeomorphic to any toric origami manifold . all necessary topological definitions and combinatorial constructions are given and the statement is reformulated in discrete geometrical terms . the problem reduces to existence of plana... | we construct quasitoric manifolds of dimension 6 and higher which are not equivariantly homeomorphic to any toric origami manifold . all necessary topological definitions and combinatorial constructions are given and the statement is reformulated in discrete geometrical terms . the problem reduces to existence of plana... |
1105.1666 | i | the equation of state ( eos ) of dense matter plays an important role in various astrophysical phenomena such as supernova explosions and the formation of neutron stars and black holes @xcite . simulations of core - collapse supernovae cover a wide range of thermodynamic conditions , and extremely high density and tem... | the study is based on the relativistic mean - field ( rmf ) theory , which can provide an excellent description of nuclear matter and finite nuclei . the thomas fermi approximation in combination with assumed nucleon distribution functions and a free energy minimization is adopted to describe the non - uniform matter ... | we construct the equation of state ( eos ) of dense matter covering a wide range of temperature , proton fraction , and density for the use of core - collapse supernova simulations . the study is based on the relativistic mean - field ( rmf ) theory , which can provide an excellent description of nuclear matter and fin... |
1105.1666 | r | in this work , we construct the eos tables covering a wide range of temperature @xmath34 , proton fraction @xmath19 , and baryon mass density @xmath35 for the use of core - collapse supernova simulations . we present two sets of eos tables , namely eos2 and eos3 . eos2 takes into account only the nucleon degree of free... | we construct the equation of state ( eos ) of dense matter covering a wide range of temperature , proton fraction , and density for the use of core - collapse supernova simulations . we treat the uniform matter and non - uniform matter consistently using the same rmf theory . we present two sets of eos tables , namely ... | we construct the equation of state ( eos ) of dense matter covering a wide range of temperature , proton fraction , and density for the use of core - collapse supernova simulations . the study is based on the relativistic mean - field ( rmf ) theory , which can provide an excellent description of nuclear matter and fin... |
1105.1666 | i | in this paper , we have presented two sets of the eos tables ( eos2 and eos3 ) covering a wide range of temperature @xmath34 , proton fraction @xmath19 , and baryon mass density @xmath35 for the use of core - collapse supernova simulations . the difference between eos2 and eos3 is that only the nucleon degree of freedo... | eos2 is an update of our earlier work published in 1998 ( eos1 ) , where only the nucleon degree of freedom is taken into account . the effect of hyperons on the eos is negligible in the low - temperature and low - density region , whereas it tends to soften the eos at high density . in comparison with eos1 , eos2 and ... | we construct the equation of state ( eos ) of dense matter covering a wide range of temperature , proton fraction , and density for the use of core - collapse supernova simulations . the study is based on the relativistic mean - field ( rmf ) theory , which can provide an excellent description of nuclear matter and fin... |
hep-ph0305152 | i | 0.6truecm the publication of the first results of the kamland experiment marks the beginning of a new era in the studies of neutrino mixing and oscillations - the era of high precision determination of the neutrino mixing parameters . the data obtained by the solar neutrino experiments homestake , kamiokande , sage , g... | this ratio is particularly sensitive to the earth matter effects in the atmospheric neutrino oscillations , and thus to the values of and , and being the neutrino mixing angle limited by the chooz and palo verde experiments and that responsible for the dominant atmospheric ( ) oscillations . it is also sensitive to the... | we derive predictions for the nadir angle ( ) dependence of the ratio of the rates of thelike andlike multi - gev events measured in water - erenkov detectors in the case of 3-neutrino oscillations of the atmospheric ( ) and ( ) , driven by one neutrino mass squared difference , . this ratio is particularly sensitive t... |
hep-ph0305152 | r | 0.6truecm the results of our analysis are summarized graphically in figs . 1 - 5 . we have used in the calculations the predictions for the nadir angle and energy distributions of the atmospheric neutrino fluxes given in @xcite . in this analysis , we only consider deep inelastic scattering ( dis ) cross sections and w... | we derive predictions for the nadir angle ( ) dependence of the ratio of the rates of thelike andlike multi - gev events measured in water - erenkov detectors in the case of 3-neutrino oscillations of the atmospheric ( ) and ( ) , driven by one neutrino mass squared difference , . we show that for , and at , the earth ... | we derive predictions for the nadir angle ( ) dependence of the ratio of the rates of thelike andlike multi - gev events measured in water - erenkov detectors in the case of 3-neutrino oscillations of the atmospheric ( ) and ( ) , driven by one neutrino mass squared difference , . this ratio is particularly sensitive t... |
1702.06545 | c | this paper presents a physical mechanism that may enable detection of inclined water maser disks orbiting massive black holes via the lensing / deflection of in - going systemic masers . the observational signature of an inclined disk is a maser line or line complex with limited doppler extent that appears to arise at ... | . the signature of an inclined water maser disk would be narrow masers near the systemic velocity that appear to emit from the black hole position , as identified by the radio continuum core . to explore this possibility , we present high resolution ( 0.070.17 ) very large array line and continuum observations of 13 ga... | we describe a method to identify inclined water maser disks orbiting massive black holes and to potentially use them to measure black hole masses . due to the geometry of maser amplification pathways , the minority of water maser disks are observable : only those viewed nearly edge - on have been identified , suggestin... |
1612.09382 | i | convex algebraic geometry studies convex hulls of semialgebraic sets @xcite . the convex hull of finitely many points , a zero - dimensional variety , is a polytope @xcite . polytopes have finitely many faces , which are themselves polytopes . the boundary of the convex hull of a higher - dimensional algebraic set ty... | we describe convex hulls of the simplest compact space curves , reducible quartics consisting of two circles . when the circles do not meet in complex projective space , their algebraic boundary contains an irrational ruled surface of degree eight whose ruling forms a genus one curve . we classify which curves arise , ... | we describe convex hulls of the simplest compact space curves , reducible quartics consisting of two circles . when the circles do not meet in complex projective space , their algebraic boundary contains an irrational ruled surface of degree eight whose ruling forms a genus one curve . we classify which curves arise , ... |
1405.4883 | i | the surface code @xcite is one of the simplest and most studied quantum error correcting codes . it can be realized on a two - dimensional grid of qubits such that the codespace is defined by simple four - qubit parity check operators acting on nearest - neighbor qubits . recent years have witnessed a surge of interes... | we describe two implementations of the optimal error correction algorithm known as the maximum likelihood decoder ( mld ) for the 2d surface code with a noiseless syndrome extraction . first , we show how to implement mld exactly in time , where is the number of code qubits . this reduction however requires a special n... | we describe two implementations of the optimal error correction algorithm known as the maximum likelihood decoder ( mld ) for the 2d surface code with a noiseless syndrome extraction . first , we show how to implement mld exactly in time , where is the number of code qubits . our implementation uses a reduction from ml... |
1307.2896 | i | the processes in the interstellar medium ( ism , or gas ) that determine its distribution , structure , and the formation of stars are multiple , very complex , and operate on atomic to galactic size scales ( see e.g. * ? ? ? this makes it difficult to develop a comprehensive model for the distribution of gas and star ... | our tests focus on intermediate radii ( 0.3 to 1 times the optical radius ) because there are insufficient data to test the outer disks and the fits are less accurate in detail in the centre . to optimise the model , we evaluate four recipes for the stability parameter , three recipes for apportioning the ism into mole... | we develop a model for the distribution of the ism and star formation in galaxies based on recent studies that indicate that galactic disks stabilise to a constant stability parameter , which we combine with prescriptions of how the phases of the ism are determined and for the star formation law ( sfl ) . the model pre... |
1307.2896 | i | we have developed a simple ` constant @xmath3 disk ' ( cq - disk ) model for predicting the distribution of ism and star formation in galaxies based on the assumption that the two - fluid instability parameter ( @xmath0 ) of the galactic disk is a constant . the model predicts the gas surface mass density and star form... | we develop a model for the distribution of the ism and star formation in galaxies based on recent studies that indicate that galactic disks stabilise to a constant stability parameter , which we combine with prescriptions of how the phases of the ism are determined and for the star formation law ( sfl ) . the model pre... | we develop a model for the distribution of the ism and star formation in galaxies based on recent studies that indicate that galactic disks stabilise to a constant stability parameter , which we combine with prescriptions of how the phases of the ism are determined and for the star formation law ( sfl ) . the model pre... |
1208.3481 | i | quantum liquids are among the most sought after states of matter . one celebrated class of such quantum liquids , the fractional quantum - hall ( fqh ) states , @xcite has been a locus of scientific attention for almost three decades . initially introduced to explain the fractional quantum - hall effect ( fqhe ) obser... | we analyze how very flat single - particle bands with non - trivial topological character , a chern number , arise both in the limit of infinite on - site interactions as well as in more realistic regimes . exact diagonalization is then used to investigate an effective one - orbital spinless - fermion model at fraction... | we discuss the low - energy limit of three - orbital kondo - lattice and hubbard models describing orbitals on a triangular lattice near half - filling . we analyze how very flat single - particle bands with non - trivial topological character , a chern number , arise both in the limit of infinite on - site interaction... |
1208.3481 | r | the interacting hamiltonian can be diagonalized exactly for small systems , using the lanczos method . @xcite unless otherwise noted , the results presented here are on a @xmath138 unit - cell torus ( i.e. , @xmath139 real - space sites ) . we do not project onto the flat subband , see fig . [ fig : disp](a ) , but ins... | it is shown that fci states are robust against disorder in the underlying magnetic texture that defines the topological character of the band . we also investigate competition between a fci state and a charge density wave ( cdw ) and discuss the effects of particle - hole asymmetry and fermi - surface nesting . neverth... | we discuss the low - energy limit of three - orbital kondo - lattice and hubbard models describing orbitals on a triangular lattice near half - filling . we analyze how very flat single - particle bands with non - trivial topological character , a chern number , arise both in the limit of infinite on - site interaction... |
1208.3481 | i | based on an earlier investigation , @xcite we have illustrated extensively how fci states can emerge in a strongly correlated multiorbital model and have shown how an effective spinless one - orbital model with nearly flat bands and non - zero chern number @xmath1 arises as the the low - energy limit of kondo - lattic... | we discuss the low - energy limit of three - orbital kondo - lattice and hubbard models describing orbitals on a triangular lattice near half - filling . fci states turn out to be rather robust and do not require very flat bands , but can also arise when filling or an absence of fermi - surface nesting disfavor the com... | we discuss the low - energy limit of three - orbital kondo - lattice and hubbard models describing orbitals on a triangular lattice near half - filling . we analyze how very flat single - particle bands with non - trivial topological character , a chern number , arise both in the limit of infinite on - site interaction... |
1212.3503 | i | in a @xmath0-dimensional hilbert space @xmath3 , the description of any quantum state @xmath4 generated by a source can be obtained by quantum tomography . for any density matrix @xmath4 , which is hermitian and has trace @xmath5 , @xmath6 independent measurements are sufficient and necessary to uniquely specify @xmath... | we consider two different types of uniqueness : ( 1 ) no other pure state is compatible with the same measurement results and ( 2 ) no other state , pure or mixed , is compatible with the same measurement results . for case ( 1 ) , it was known that for a-dimensional hilbert space , there exists a set of observables th... | we discuss the uniqueness of quantum states compatible with given measurement results for a set of observables . for a given pure state , we consider two different types of uniqueness : ( 1 ) no other pure state is compatible with the same measurement results and ( 2 ) no other state , pure or mixed , is compatible wit... |
1212.3503 | i | in this section we discuss the case where the hilbert space @xmath3 is a multipartite quantum system , where the observables correspond to the reduced density matrices ( rdms ) . that is , the observables are chosen to be acting nontrivially only on some subsystems . for instance , for a three - qubit system , the obse... | unique determination of a pure state by its reduced density matrices ( rdms ) , a special case of determination by observables , is also discussed . we improve the best known bound on local dimensions in which almost all pure states are uniquely determined by their rdms for case ( 2 ) . | we discuss the uniqueness of quantum states compatible with given measurement results for a set of observables . for a given pure state , we consider two different types of uniqueness : ( 1 ) no other pure state is compatible with the same measurement results and ( 2 ) no other state , pure or mixed , is compatible wit... |
astro-ph0609079 | c | as a starting point for this discussion , we summarize the two main findings thus far , both of which concern dependencies of the measured color - magnitude slope on external factors : ( 1 ) the slope for the blue gcs decreases gradually towards fainter host galaxy luminosities , whereas there is no significant color -... | there is no correlation between and for gcs belonging to the red subpopulation . we identify two environmental dependencies which influence the derived color - magnitude relation : ( 1 ) the slope of the color - magnitude relation decreases in significance with decreasing galaxy luminosity , although it remains detecta... | we examine the correlation between globular cluster ( gc ) color and magnitude using hst / acs imaging for a sample of 79 early - type galaxies ( mag ) with accurate surface - brightness fluctuation distances from the acs virgo cluster survey . using the mixture modeling algorithm , we find a highly significant correla... |
astro-ph0609079 | i | in this paper we have analysed the color - magnitude relation for the gc subpopulations in early - type galaxies belonging to the virgo cluster . our sample consists of 79 galaxies , spanning the range @xmath0 mag , drawn from the acs virgo cluster survey ( ct 2004 ) . our principal findings can be summarized as follo... | we examine the correlation between globular cluster ( gc ) color and magnitude using hst / acs imaging for a sample of 79 early - type galaxies ( mag ) with accurate surface - brightness fluctuation distances from the acs virgo cluster survey . using the mixture modeling algorithm , we find a highly significant correla... | we examine the correlation between globular cluster ( gc ) color and magnitude using hst / acs imaging for a sample of 79 early - type galaxies ( mag ) with accurate surface - brightness fluctuation distances from the acs virgo cluster survey . using the mixture modeling algorithm , we find a highly significant correla... |
1309.5716 | i | thermodynamics and quantum optics have been intertwined since the inception of field quantization @xcite . over the years their interconnection has been repeatedly revealed , e.g. , in the derivation of the maser efficiency from thermodynamics @xcite and its extension to the micromaser @xcite , in suggestions to boost ... | we explore the dependence of the performance bounds of heat engines and refrigerators on the _ initial quantum state _ and the subsequent evolution of their piston , modeled by a quantized harmonic oscillator . our goal is to provide a fully quantized treatment of _ self - contained ( autonomous ) _ heat machines , as ... | we explore the dependence of the performance bounds of heat engines and refrigerators on the _ initial quantum state _ and the subsequent evolution of their piston , modeled by a quantized harmonic oscillator . our goal is to provide a fully quantized treatment of _ self - contained ( autonomous ) _ heat machines , as ... |
1309.5716 | r | the fully quantum autonomous heat engine whose work extraction is determined by nonpassivity should be able to reproduce in the semiclassical limit the power extraction of an externally ( _ parametrically _ ) modulated heat engine ( proposed in @xcite ) that obeys the cyclic work definition [ 14 ] ( eq.(1 ) ) , and is ... | by contrast , there is no external time - dependent driving . instead , the evolution is caused by the stationary simultaneous interaction of two heat baths ( having distinct spectra and temperatures ) with a single two - level system that is in turn coupled to the quantum piston . | we explore the dependence of the performance bounds of heat engines and refrigerators on the _ initial quantum state _ and the subsequent evolution of their piston , modeled by a quantized harmonic oscillator . our goal is to provide a fully quantized treatment of _ self - contained ( autonomous ) _ heat machines , as ... |
1211.6506 | c | the recent neutrino oscillation experimental highlights : ( i ) rather large value of reactor mixing angle @xmath22 and ( ii ) indication of significant deviation of the atmospheric neutrino mixing angle @xmath7 from maximality may change our theoretical approach for constructing neutrino mass models . in this paper , ... | the first pattern is proposed by two of us and is favored if the atmospheric mixing angle lies in the first octant , while the second one is preferred for the second octant of . in order to reproduce the second texture , we find that the flavor symmetry should be , while for the first pattern the flavor symmetry should... | we explore two bilarge neutrino mixing anztze within the context of abelian flavor symmetry theories : ( ) , , , and ( ) , , . the first pattern is proposed by two of us and is favored if the atmospheric mixing angle lies in the first octant , while the second one is preferred for the second octant of . in order to rep... |
1409.6487 | i | eccentric discs , in which the dominant motion consists of elliptical keplerian orbits , occur in a wide variety of astrophysical situations . for example , an eccentric gaseous disc is formed directly when a star ( or a giant planet ) evolves , through scattering or secular interaction , on to an orbit that closely ap... | we formulate a local dynamical model of an eccentric disc in which the dominant motion consists of elliptical keplerian orbits . the simplest solutions of the local model are laminar flows consisting of a ( generally nonlinear ) vertical oscillation of the disc . we also derive the linear evolutionary equations for an ... | we formulate a local dynamical model of an eccentric disc in which the dominant motion consists of elliptical keplerian orbits . the model is a generalization of the well known shearing sheet , and is suitable for both analytical and computational studies of the local dynamics of eccentric discs . it is spatially homog... |
1409.6487 | c | although keplerian discs are usually assumed to be circular , the general keplerian disc is elliptical , in accordance with kepler s first law . as found by @xcite and other authors , viscosity ( and other dissipative effects ) do not necessarily lead to the circularization of a disc , even though circular orbits have ... | the model is a generalization of the well known shearing sheet , and is suitable for both analytical and computational studies of the local dynamics of eccentric discs . we discuss the properties of the laminar solutions , showing that they can exhibit extreme compressional behaviour for eccentricities greater than abo... | we formulate a local dynamical model of an eccentric disc in which the dominant motion consists of elliptical keplerian orbits . the model is a generalization of the well known shearing sheet , and is suitable for both analytical and computational studies of the local dynamics of eccentric discs . it is spatially homog... |
0910.3456 | i | in this paper , we give a definition of _ coherent tangent bundles _ , which is an intrinsic formulation of wave fronts . the advantage of this formulation is that the first fundamental forms and the third fundamental forms satisfy exactly the same conditions for wave fronts in space forms , and they can reverse roles ... | are considered as induced metrics of certain homomorphisms between vector bundles . they satisfy the completely same conditions , and so can reverse roles with each other . for a given wave front of a-manifold , there are two gauss - bonnet formulas . by exchanging the roles of the fundamental forms , we get two new ad... | we give a definition of ` coherent tangent bundles ' , which is an intrinsic formulation of wave fronts . in our application of coherent tangent bundles for wave fronts , the first fundamental forms and the third fundamental forms are considered as induced metrics of certain homomorphisms between vector bundles . they ... |
astro-ph0311152 | c | the aim of this paper is not necessarily to ` drive a wedge ' between the ` canonical ' black hole sxts and this sub - class of low / hard state x - ray transients ( lhxt ; we note that the term ` hard x - ray transient ' has been applied previously to the be + neutron star binary systems ) . while we can see that the ... | comparison of the lightcurve morphologies , spectral behaviour , properties of the quasi - periodic oscillations and the radio jet provides the first study of such objects as a sub - class of x - ray transients . however rather than assuming that these hard state x - ray transients are different from the ` canonical ' ... | we have accumulated multiwavelength ( x - ray , optical , radio ) lightcurves for the eight black hole x - ray binaries which have been observed to enter a supposed ` soft x - ray transient ' outburst , but remained in the low / hard state throughout the outburst . comparison of the lightcurve morphologies , spectral b... |
astro-ph0311152 | c | we have accumulated multiwavelength datasets for the eight black hole x - ray binaries which have been observed to enter an outburst but remained in the low / hard state throughout . we show that , despite very similar x - ray spectral properties , the lightcurve morphologies of these sources are very different , as ar... | we have accumulated multiwavelength ( x - ray , optical , radio ) lightcurves for the eight black hole x - ray binaries which have been observed to enter a supposed ` soft x - ray transient ' outburst , but remained in the low / hard state throughout the outburst . | we have accumulated multiwavelength ( x - ray , optical , radio ) lightcurves for the eight black hole x - ray binaries which have been observed to enter a supposed ` soft x - ray transient ' outburst , but remained in the low / hard state throughout the outburst . comparison of the lightcurve morphologies , spectral b... |
1212.1226 | i | comets are understood to be frozen remnants from the formation of our solar system . as such , their chemical composition is of great significance to understanding the origin of the planets and the distribution of important molecules , including water , throughout the solar system . this was and is a major goal of the ... | we have adapted coupled escape probability , a new exact method of solving radiative transfer problems , for use in asymmetrical spherical situations . our model is intended specifically for use in modeling optically thick cometary comae , although not limited to such use . this method enables the accurate modeling of ... | we have adapted coupled escape probability , a new exact method of solving radiative transfer problems , for use in asymmetrical spherical situations . our model is intended specifically for use in modeling optically thick cometary comae , although not limited to such use . this method enables the accurate modeling of ... |
astro-ph0607616 | i | following on the discovery of the anomalous absorption of the cosmic microwave background ( cmb ) at 4.83 ghz by gas - phase ortho - formaldehyde ( h@xmath0co ) molecules in a few nearby galactic dark nebula @xcite , several surveys were carried out in hopes of establishing the general galactic distribution of distant ... | we have carried out a blind search in the general direction of the galactic anticenter for absorption of the cosmic microwave background ( cmb ) radiation near 4.83 ghz by molecular clouds containing gaseous ortho - formaldehyde ( hco ) . the observations were done using the 25-m radio telescope at onsala in sweden , a... | we have carried out a blind search in the general direction of the galactic anticenter for absorption of the cosmic microwave background ( cmb ) radiation near 4.83 ghz by molecular clouds containing gaseous ortho - formaldehyde ( hco ) . the observations were done using the 25-m radio telescope at onsala in sweden , a... |
astro-ph0607616 | c | * we have successfully detected anomalous cmb absorption by h@xmath0co - bearing dust clouds at @xmath4 of our blind survey positions in the direction of the outer galaxy . no emission profiles were found . * our success is likely due to the large improvement in sensitivity of our observations over that of earlier surv... | we have detected hco cmb absorption at of the survey pointings . although these two tracers are expected to have similar excitation requirements on the microscopic level characteristic of warm , tk , dense , condensations in molecular clouds , the co(1 - 0 ) line is expected to be optically thick , whereas the hco li... | we have carried out a blind search in the general direction of the galactic anticenter for absorption of the cosmic microwave background ( cmb ) radiation near 4.83 ghz by molecular clouds containing gaseous ortho - formaldehyde ( hco ) . the observations were done using the 25-m radio telescope at onsala in sweden , a... |
astro-ph0601315 | i | high galactic latitude molecular clouds ( hereafter hlcs ) are typically located at @xmath17b@xmath17 @xmath18 20@xmath430@xmath4 . since the gaussiun scale height of co is estimated to be @xmath3 100 pc in the inner galactic disk ( e.g. , magnani et al . 2000 ) , hlcs are likely located very close to the sun , within ... | we have carried out large scale co observations with a mm / sub - mm telescope nanten toward a far infrared loop - like structure whose angular extent is about 20 degrees around ( , ) ( 109 , ) in pegasus . its diameter corresponds to 25 pc at a distance of 100 pc , adopted from that of a star hd886 ( b2iv ) near the c... | we have carried out large scale co observations with a mm / sub - mm telescope nanten toward a far infrared loop - like structure whose angular extent is about 20 degrees around ( , ) ( 109 , ) in pegasus . its diameter corresponds to 25 pc at a distance of 100 pc , adopted from that of a star hd886 ( b2iv ) near the c... |
astro-ph0601315 | r | figure 1 shows the distribution of the velocity - integrated intensity map of @xmath6co emission . we defined a @xmath6co cloud as a collection of more than two contiguous observed positions whose integrated intensity exceeds 0.77 k km s@xmath20 ( 5@xmath30 ) . based on the definition , we identified 78 molecular cloud... | theco distribution is found to consist of 78 small clumpy clouds whose masses range from 0.04 to 11 , and 83% of theco clouds have very small masses less than 1.0 . co emission was detected in the region where the column density of h derived fromco is greater than 5 , corresponding tov of 1 mag , which takes into accou... | we have carried out large scale co observations with a mm / sub - mm telescope nanten toward a far infrared loop - like structure whose angular extent is about 20 degrees around ( , ) ( 109 , ) in pegasus . its diameter corresponds to 25 pc at a distance of 100 pc , adopted from that of a star hd886 ( b2iv ) near the c... |
astro-ph0601315 | c | we have made a large - scale survey of high galactic latitude molecular clouds in the @xmath7 = 10 lines of @xmath6co and @xmath9co toward a large scale structure located around ( @xmath1 , @xmath2 ) @xmath3 ( 109@xmath4 , @xmath545@xmath4 ) with nanten . this survey spatially resolved the distribution of molecular gas... | we find no indication of star formation in these clouds in iras point source catalog and 2mass point source catalog . the star hd886 ( b2iv ) may be the source of the mechanical luminosity via stellar winds to create shocks , forming the loop - like structure where the very low - mass clouds are embedded . | we have carried out large scale co observations with a mm / sub - mm telescope nanten toward a far infrared loop - like structure whose angular extent is about 20 degrees around ( , ) ( 109 , ) in pegasus . its diameter corresponds to 25 pc at a distance of 100 pc , adopted from that of a star hd886 ( b2iv ) near the c... |
0912.1646 | i | type ia supernovae ( sneia ) are currently the best cosmological tool to investigate the dark energy driving the accelerated expansion of the universe @xcite . though generally accepted as thermonuclear explosions of carbon - oxygen white dwarfs which have accreted sufficient mass from their companion , two competitive... | we have combined the large snia database of the canada - france - hawaii telescope supernova legacy survey and catalogs of galaxies with photometric redshifts , vla 1.4 ghz radio sources , and spitzer infrared sources . we also show the properties of sneia in radio and infrared galaxies suggest the hosts contain dust a... | we have combined the large snia database of the canada - france - hawaii telescope supernova legacy survey and catalogs of galaxies with photometric redshifts , vla 1.4 ghz radio sources , and spitzer infrared sources . we present eight sneia in early - type host galaxies which have counterparts in the radio and infrar... |
astro-ph9909514 | i | the properties of galaxy clusters play an important role in constraining cosmological parameters and models of large - scale structure formation . because clusters are the most massive collapsed aggregates in the universe , the cluster mass function and its evolution with redshift constrains the spectrum of density flu... | we have measured 492 redshifts ( 311 new ) in the direction of the poor cluster awm 7 and have identified 179 cluster members ( 73 new ) . we use two independent methods to derive a self - consistent mass profile , under the assumptions that the absorption - line galaxies are virialized and that they trace an underlyi... | we have measured 492 redshifts ( 311 new ) in the direction of the poor cluster awm 7 and have identified 179 cluster members ( 73 new ) . we use two independent methods to derive a self - consistent mass profile , under the assumptions that the absorption - line galaxies are virialized and that they trace an underlyi... |
cond-mat9510150 | i | the properties of strongly correlated electrons confined to a ladder ( or double chain ) and described by @xmath0-@xmath1 or hubbard models have been the subject of intensive investigation recently . the reason lies in the unusual spin liquid nature of the undoped parent system . another reason for especial interest is... | we have numerically investigated the doped- ladder using exact diagonalization . there is a simple picture of the excitation spectrum that can be continued to explain the behavior at isotropic coupling . at the ladder is phase separated into holes and a heisenberg ladder . at intermediate coupling the ground state show... | we have numerically investigated the doped- ladder using exact diagonalization . we have studied both the limit of strong inter - chain coupling and isotropic coupling . the ladder scales to the luther - emery liquid regime in the strong inter - chain coupling limit . in this strong coupling limit there is a simple pic... |
0908.0638 | r | irac has proved to be a very sensitive instrument , revealing previously unseen structures in the outer shells of expanded pne @xcite . since the nebulae in our sample are typically very compact and ir - bright , which is normal for their evolutionary status , their core emission dominates the inner few arcsec near the... | we have observed a small sample of hot post - agb stars with the infrared array camera ( irac ) and the infrared spectrograph ( irs ) on - board the spitzer space telescope . we obtained irs spectra to identify the chemistry of the envelopes and found that more than of the sources in our sample have mixed chemistry , s... | we have observed a small sample of hot post - agb stars with the infrared array camera ( irac ) and the infrared spectrograph ( irs ) on - board the spitzer space telescope . the stars were selected from the literature on the basis of their far - infrared excess ( i.e. , post - agb candidates ) and b spectral type ( i.... |
0908.0638 | c | the number density of post - agb / proto - pn is estimated to be around 0.4 kpc@xmath68 . as a comparison , the density of agb stars is 15 kpc@xmath68 and of main sequence stars is @xmath102@xmath69 kpc@xmath68 @xcite . knowledge about this phase is mostly derived from a handful of objects , such as the c - rich source... | the combination of our irac observations with 2mass and iras catalog data , along with previous radio observations in the cm range ( where available ) allowed us to model the seds of our targets and find that in almost all of them at least two shells of dust at different temperatures must be present , the hot dust comp... | we have observed a small sample of hot post - agb stars with the infrared array camera ( irac ) and the infrared spectrograph ( irs ) on - board the spitzer space telescope . the stars were selected from the literature on the basis of their far - infrared excess ( i.e. , post - agb candidates ) and b spectral type ( i.... |
1204.1334 | c | our spectroscopic studies have revealed intrinsic variability and amazing structure in the h@xmath5 line profiles caused by high velocity gas flows in the vicinity of the stars within the kh 15d system . the profiles observed during ingress and egress are distinctly different , changing from an inverse p - cygni profi... | we have obtained 48 high resolution echelle spectra of the pre - main sequence eclipsing binary system kh 15d ( v582 mon , p = 48.37 d , 0.6 , m = 0.6 m , m = 0.7 m ) . other observed variations depend on the orbital phase : the h emission line profile changes from an inverse p cygni type profile during ingress to an ... | we have obtained 48 high resolution echelle spectra of the pre - main sequence eclipsing binary system kh 15d ( v582 mon , p = 48.37 d , 0.6 , m = 0.6 m , m = 0.7 m ) . the eclipses are caused by a circumbinary disk seen nearly edge on , which at the epoch of these observations completely obscured the orbit of star b ... |
cond-mat9612133 | i | for a wide variety of substrates , adsorbed films of @xmath0he thicker than approximately two atomic layers are superfluid at zero temperature . as the temperature is increased , a transition occurs to a non - superfluid phase at a critical temperature @xmath1 . although the details of this transition depend on the top... | torsional oscillator measurements of thehe - aerogel system were used to determine the superfluid density of films with transition temperatures as low as 20 mk . heat capacity measurements of thehe - vycor system probed the excitation spectrum of both non - superfluid and superfluid films for temperatures down to 10 ... | we have studiedhe films adsorbed in two porous glasses , aerogel and vycor , using high precision torsional oscillator and dc calorimetry techniques . our investigation focused on the onset of superfluidity at low temperatures as thehe coverage is increased . torsional oscillator measurements of thehe - aerogel system ... |
0810.1140 | i | the luminous ( @xmath11 ) orion bn / kl infrared nebula is the nearest ( @xmath12 pc : @xcite ) and probably most studied high - mass star forming region ( hmsfr ) in the galaxy . more than 20 spectral line surveys have been carried out in the mm and submm bands over the last 25 years ( 72 - 91 ghz : @xcite ; 70 - 115... | we have surveyed molecular line emission from orion bn / kl from 42.3 to 43.6 ghz with the green bank telescope . we report here for the first time the spectra of thesio andsio emission in orion bn / kl , and we show that they have double - peaked profiles with velocity extents similar to the main isotopologue . the ... | we have surveyed molecular line emission from orion bn / kl from 42.3 to 43.6 ghz with the green bank telescope . sixty - seven lines were identified and ascribed to 13 different molecular species . the spectrum at 7 mm is dominated by sio , so , choch , and chcn . five transitions have been detected from the sio isot... |
0810.1140 | i | in this line survey of the orion bn / kl region we find 67 spectral features , attributed to 13 species . the spectrum is dominated by sio , so@xmath0 , c@xmath0h@xmath2cn , ch@xmath1och@xmath1 , and ch@xmath1coch@xmath1 . we confirm the detection of acetone towards the hot core at 7 mm , and we find further indicatio... | the spectrum at 7 mm is dominated by sio , so , choch , and chcn . . some of the unidentified lines in principle could be high - velocity sio features , but without imaging data their location can not be established . we also confirm the 7 mm detection of a complex oxygen - bearing species , acetone ( chcoch ) , whic... | we have surveyed molecular line emission from orion bn / kl from 42.3 to 43.6 ghz with the green bank telescope . sixty - seven lines were identified and ascribed to 13 different molecular species . the spectrum at 7 mm is dominated by sio , so , choch , and chcn . five transitions have been detected from the sio isot... |
1201.3874 | i | ground - based remote sensing of the ionosphere is a rich field of study that has developed over several decades and now includes a host of different instruments including , but not limited to , gps , certo @xcite , and other radio beacon receivers , ionosondes , and radar / hf arrays . a powerful yet relatively underu... | , we showed that the vla can detect fluctuations in total electron content ( tec ) with amplitudes of tecu and can measure tec gradients with a precision of about tecu km . we detail two complementary techniques for producing spectral analysis of these tec gradient measurements . * ; * ? ? ? * ) . | we have used a relatively long , contiguous vhf observation of a bright cosmic radio source ( cygnus a ) with the very large array ( vla ) through the nighttime , midlatitude ionosphere to demonstrate the phenomena observable with this instrument . in a companion paper , we showed that the vla can detect fluctuations i... |
1201.3874 | c | our exploration of a long , vhf observation of cyg a with the vla has successfully demonstrated the power of this instrument to characterize a variety of transient ionospheric phenomena . for this observation , the typical @xmath109 uncertainty in the @xmath7 measurements was @xmath9 tecu , yielding more than an order ... | we have used a relatively long , contiguous vhf observation of a bright cosmic radio source ( cygnus a ) with the very large array ( vla ) through the nighttime , midlatitude ionosphere to demonstrate the phenomena observable with this instrument . in a companion paper this technique was successful in detecting and cha... | we have used a relatively long , contiguous vhf observation of a bright cosmic radio source ( cygnus a ) with the very large array ( vla ) through the nighttime , midlatitude ionosphere to demonstrate the phenomena observable with this instrument . in a companion paper , we showed that the vla can detect fluctuations i... |
1208.5518 | i | the redshift @xmath82 - 3 epoch stands out as a unique era for studying galaxy formation and evolution . at this epoch , the cosmic star formation rate reaches its peak ( heavens et al . 2004 ; hopkins & beacom 2006 ; reddy et al . 2008 ) , and ultra - luminous infrared galaxies ( ulirgs , @xmath9 , sanders & mirabel 1... | we have used the caltech submillimeter observatory ( cso ) to follow - up a sample of wise - selected , hyperluminous galaxies , so called w1w2-dropout galaxies . this is a rare ( all - sky ) population of galaxies at high redshift ( peaks at=2 - 3 ) , that are faint or undetected by wise at 3.4 and 4.6 m , yet are cle... | we have used the caltech submillimeter observatory ( cso ) to follow - up a sample of wise - selected , hyperluminous galaxies , so called w1w2-dropout galaxies . this is a rare ( all - sky ) population of galaxies at high redshift ( peaks at=2 - 3 ) , that are faint or undetected by wise at 3.4 and 4.6 m , yet are cle... |
1208.5518 | r | of the 14 high redshift w12drop galaxies observed with sharc - ii at 350 @xmath2 m , nine were detected at @xmath38 3 @xmath27 or above . the relatively high detection rate of these w12drop galaxies at 350 @xmath2 m implies they are a submillimeter bright population with high infrared luminosity . we also observed thre... | the optical spectra of most of these galaxies show significant agn activity . we observed 14 high - redshift ( ) w1w2-dropout galaxies with sharc - ii at 350 to 850 m , with 9 detections ; and observed 18 with bolocam at 1.1 mm , with five detections . warm _ spitzer _ spitzer _ and cso , we constructed their mid - ir ... | we have used the caltech submillimeter observatory ( cso ) to follow - up a sample of wise - selected , hyperluminous galaxies , so called w1w2-dropout galaxies . this is a rare ( all - sky ) population of galaxies at high redshift ( peaks at=2 - 3 ) , that are faint or undetected by wise at 3.4 and 4.6 m , yet are cle... |
1208.5518 | i | wise has discovered a possibly new type of object , the w12drop galaxies . the results of our cso submm / mm follow - up observations for a subsample of w12drop galaxies are as follows : \2 . the seds constructed from wise , warm _ spitzer _ and cso data reveal consistent features for w12drop galaxies . these seds... | these seds have a consistent shape , showing significantly higher mid - ir to submm ratios than other galaxy templates , suggesting a hotter dust temperature . we estimate their dust temperatures to be k using a single - temperature model . these seds are not well fitted with existing galaxy templates , suggesting they... | we have used the caltech submillimeter observatory ( cso ) to follow - up a sample of wise - selected , hyperluminous galaxies , so called w1w2-dropout galaxies . this is a rare ( all - sky ) population of galaxies at high redshift ( peaks at=2 - 3 ) , that are faint or undetected by wise at 3.4 and 4.6 m , yet are cle... |
1204.1535 | i | stars form in a diverse range of environments within molecular clouds . these cloud environments include crowded , massive clusters heated by o stars ( e.g. in orion ) , smaller clusters without high mass stars ( e.g. in ophiuchus ) , or isolated , cold dark clouds containing low mass stars ( e.g. in taurus ) . the tem... | we combine near- and mid - infrared photometry from 2mass j , h , and bands and _ spitzer _ 3.6 , 4.5 , 5.8 , 8.0 , and 24 m bands to create 1 - 24 m spectral energy distributions ( seds ) . using protostars from the _ c2d _ survey with well - determined bolometric luminosities , we derive a relationship between bolo... | we identify protostars in _ spitzer _ surveys of nine star - forming molecular clouds within 1 kpc : serpens , perseus , ophiuchus , chamaeleon , lupus , taurus , orion , cep ob3 , and mon r2 , which combined host over 700 protostar candidates . these clouds encompass a variety of star forming environments , including ... |
1204.1535 | i | we identify 727 protostar candidates in _ spitzer _ surveys of nine star forming clouds within 1 kpc of the sun . the sample includes both nearby dark clouds forming primarily low mass stars , clouds with moderate sized clusters forming intermediate mass stars , and clouds with large clusters forming massive stars . th... | we identify protostars in _ spitzer _ surveys of nine star - forming molecular clouds within 1 kpc : serpens , perseus , ophiuchus , chamaeleon , lupus , taurus , orion , cep ob3 , and mon r2 , which combined host over 700 protostar candidates . these clouds contamination due to edge - on disks , reddened class ii sour... | we identify protostars in _ spitzer _ surveys of nine star - forming molecular clouds within 1 kpc : serpens , perseus , ophiuchus , chamaeleon , lupus , taurus , orion , cep ob3 , and mon r2 , which combined host over 700 protostar candidates . these clouds encompass a variety of star forming environments , including ... |
1005.4854 | i | the present paper addresses a constrained optimization problem , subsuming and extending optimization tasks which arise in various areas of applications such as ( i ) low - rank tensor approximation problems from signal processing and data compression , ( ii ) geometric measures of pure state entanglement from quantum ... | we introduce a generalized rayleigh - quotient on the tensor product of grassmannians enabling a unified approach to well - known optimization tasks from different areas of numerical linear algebra , such as best low - rank approximations of tensors ( data compression ) , geometric measures of entanglement ( quantum co... | we introduce a generalized rayleigh - quotient on the tensor product of grassmannians enabling a unified approach to well - known optimization tasks from different areas of numerical linear algebra , such as best low - rank approximations of tensors ( data compression ) , geometric measures of entanglement ( quantum co... |
1405.2773 | i | each group can be obtained by quotienting a free group by a normal subgroup generated by a set of relators . in @xcite gromov introduced the notion of a random finitely presented group on @xmath5 generators at density @xmath6 . the idea was to fix a set of @xmath7 generators and consider presentations with @xmath8 rela... | we introduce a new random group model called the _ square model _ : we quotient a free group on generators by a random set of relations , each of which is a reduced word of length four . we prove , as in the gromov model introduced in , that for densities a random group in the square model is trivial with overwhelming ... | we introduce a new random group model called the _ square model _ : we quotient a free group on generators by a random set of relations , each of which is a reduced word of length four . we prove , as in the gromov model introduced in , that for densities a random group in the square model is trivial with overwhelming ... |
1008.0828 | i | our study concerns the combinatorics behind the character of the space of diagonal harmonics @xmath6 and identities involving macdonald polynomials that can be used to form expressions for this character . at the root of this theory is a linear operator @xmath1 , introduced in @xcite , under which the modified macdonal... | our conjecture refines several earlier conjectures concerning the space of diagonal harmonics including the shuffle conjecture " ( duke j. math . ( ) , pp . ) for $ ] . we bring to light that certain generalized hall - littlewood polynomials indexed by compositions are the building blocks for the algebraic combinato... | we introduce a-enumeration of dyck paths which are forced to touch the main diagonal at specific points and forbidden to touch elsewhere and conjecture that it describes the action of the macdonald theory operator applied to a hall - littlewood polynomial . our conjecture refines several earlier conjectures concerning ... |
quant-ph0508218 | i | quantum computing offers a way to realize certain algorithms exponentially more efficiently than with the best known classical solutions @xcite . a substantial effort has therefore been made to develop the corresponding quantum technologies . proof - of - principle experiments demonstrating the feasibility of quantum c... | we introduce an architecture for robust and scalable quantum computation using both stationary qubits ( e.g. single photon sources made out of trapped atoms , molecules , ions , quantum dots , or defect centers in solids ) and flying qubits ( e.g. photons ) . our scheme solves some of the most pressing problems in ex... | we introduce an architecture for robust and scalable quantum computation using both stationary qubits ( e.g. single photon sources made out of trapped atoms , molecules , ions , quantum dots , or defect centers in solids ) and flying qubits ( e.g. photons ) . our scheme solves some of the most pressing problems in ex... |
1406.7490 | i | a large body of work has evolved concerning the problem of identifying an `` intruder '' vertex in a graph . as examples , one might seek to identify a malfunctioning processor in a multiprocessor network , or the location of an intruder such as a thief , saboteur or fire in a graph - modeled facility . in this paper ,... | we introduce the notion of a centroidal locating set of a graph , that is , a set of vertices such that all vertices in are uniquely determined by their relative distances to the vertices of . a centroidal locating set of of minimum size is called a centroidal basis , and its size is the centroidal dimension . this not... | we introduce the notion of a centroidal locating set of a graph , that is , a set of vertices such that all vertices in are uniquely determined by their relative distances to the vertices of . a centroidal locating set of of minimum size is called a centroidal basis , and its size is the centroidal dimension . this not... |
1407.6299 | i | if black hole evaporation is assumed to preserve unitarity , a range of arguments based on quantum correlations @xcite suggest that physics at the slowly - shrinking horizon may differ significantly from the innocuous picture that underlies hawking s original derivation of black hole radiation within curved spacetime q... | the difference from the minkowski vacuum response is proportional to for the non - derivative detector and to for the derivative - coupling detector , both in the limit of a large energy gap and in the limit of adiabatic switching . adding to the quantum state high rindler temperature excitations behind the horizon inc... | we investigate a two - level unruh - dewitt detector coupled to a massless scalar field or its proper time derivative in-dimensional minkowski spacetime , in a quantum state whose correlation structure across the rindler horizon mimics the stationary aspects of a firewall that almheiri _ et al _ have argued to ensue in... |
1407.6299 | i | we have shown that a two - level udw detector in @xmath0-dimensional minkowski spacetime , coupled linearly to a massless scalar field or its proper time derivative , has a finite response on crossing inertially the rindler horizon in a firewall - type quantum state in which the minkowski vacuum correlations between th... | we investigate a two - level unruh - dewitt detector coupled to a massless scalar field or its proper time derivative in-dimensional minkowski spacetime , in a quantum state whose correlation structure across the rindler horizon mimics the stationary aspects of a firewall that almheiri _ et al _ have argued to ensue in... | we investigate a two - level unruh - dewitt detector coupled to a massless scalar field or its proper time derivative in-dimensional minkowski spacetime , in a quantum state whose correlation structure across the rindler horizon mimics the stationary aspects of a firewall that almheiri _ et al _ have argued to ensue in... |
1301.6031 | i | recent progress in the field of dynamical quantum transport @xcite opens new and fascinating perspectives for exploring and understanding mesoscopic and nanoscopic conductors . with the implementation of an on - demand single - electron emitter @xcite not relying on electron - electron interaction it is possible to add... | we investigate adiabatic and non - adiabatic emission of single particles into an edge state using an analytically solvable dynamical scattering matrix model of an on - demand source . most effects observed for adiabatic emitters also occur for non - adiabatic emitters . in particular this applies to effects arising du... | we investigate adiabatic and non - adiabatic emission of single particles into an edge state using an analytically solvable dynamical scattering matrix model of an on - demand source . we compare adiabatic and non - adiabatic emissions by considering two geometries : a collider geometry where two emitters are coupled t... |
1201.1617 | i | the present understanding of galaxy formation in a cosmological context is based upon the collapse via gravitational instability of tiny dark matter ( dm ) perturbations dominating the matter contribution @xmath4 to the energy density of the universe , with baryons contributing only a fraction @xmath5 . in such a conte... | we investigate for the first time the effects of a warm dark matter ( wdm ) power spectrum on the statistical properties of galaxies using a semi - analytic model of galaxy formation . the wdm spectrum we adopt as a reference case is suppressed - compared to the standard cold dark matter ( cdm ) case - below a cut - of... | we investigate for the first time the effects of a warm dark matter ( wdm ) power spectrum on the statistical properties of galaxies using a semi - analytic model of galaxy formation . the wdm spectrum we adopt as a reference case is suppressed - compared to the standard cold dark matter ( cdm ) case - below a cut - of... |
1201.1617 | i | in this paper we investigated the effect of assuming a wdm power spectrum on galaxy formation using a sam , leaving unchanged the baryonic mechanisms already implemented in our previous cdm model ( in particular the stellar and the agn feedback ) ; this allows to single out the effects of changing the dm spectrum with ... | we discuss how the former result is directly related to the smaller number of low - mass haloes collapsing in the wdm scenario , while the latter is related to the smaller number of satellite galaxies accumulating in massive haloes at low redshift , thus suppressing the accretion of small lumps on the central , massive... | we investigate for the first time the effects of a warm dark matter ( wdm ) power spectrum on the statistical properties of galaxies using a semi - analytic model of galaxy formation . the wdm spectrum we adopt as a reference case is suppressed - compared to the standard cold dark matter ( cdm ) case - below a cut - of... |
1507.05688 | c | as presented in the previous sections , we parameterize the gas inflow and outflow rates in mwlgs in terms of @xmath62 and @xmath63 as described in equation ( [ eq : fit ] ) . the properties of these parameters are summarized as follows . * both @xmath64 and @xmath65 are a decreasing function of time . * the index @xma... | we find that the efficiency of gas inflow for a given sfr decreases with time and that the inflow rate is always nearly proportional to the sfr . for gas outflow , although its efficiency for a given sfr is a decreasing function of time , similarly to gas inflow , the outflow rate is not necessarily proportional to the... | we investigate gas inflow and outflow histories in milky way - like disk galaxies , to get new insights into the baryonic processes in galaxy formation and evolution . for this purpose , we solve the equations for the evolutions of the surface mass densities of gas and metals at each radius in a galactic disk , based o... |
1507.05688 | i | we have investigated the gas inflow and outflow rate densities in milky way - like galaxies as a function of the sfr density , in order to get new insights into the baryonic processes tightly relating to galaxy formation and evolution . for this purpose , we solve equations ( [ eq : dm1 ] ) and ( [ eq : dm2 ] ) for the... | we investigate gas inflow and outflow histories in milky way - like disk galaxies , to get new insights into the baryonic processes in galaxy formation and evolution . for this purpose , we solve the equations for the evolutions of the surface mass densities of gas and metals at each radius in a galactic disk , based o... | we investigate gas inflow and outflow histories in milky way - like disk galaxies , to get new insights into the baryonic processes in galaxy formation and evolution . for this purpose , we solve the equations for the evolutions of the surface mass densities of gas and metals at each radius in a galactic disk , based o... |
cond-mat0109011 | i | we have introduced a range of schematic models that are capable of exhibiting a form of jamming under an imposed stress @xmath1 . the models are based on the sgr model of sollich _ et al . _ , but differ in that the effective temperature @xmath0 is no longer constant , and can instead vary with the state of the system... | lett . * 78 * , 2020 ( 1997 ) ] , but with an effective temperature that is a decreasing function of either the global stress or the local strain . for appropiate , it is shown that the flow curves include a region of negative slope , around which the stress exhibits hysteresis under a cyclically varying imposed stra... | we investigate shear thickening and jamming within the framework of a family of spatially homogeneous , scalar rheological models . these are based on the ` soft glassy rheology ' model of sollich _ et al . _ [ phys . rev . lett . * 78 * , 2020 ( 1997 ) ] , but with an effective temperature that is a decreasing functi... |
0909.0269 | i | supermassive black holes ( smbh ) are believed to reside in nearly all galaxies @xcite and the masses of these smbh ( @xmath5 ) show correlations with host galaxy properties , implying that smbh and galaxy formation processes are closely linked @xcite . previous studies have shown correlations between @xmath5 and galax... | the best fit correlation , where is determined from relation , is over 2 orders of magnitude in . from a variety of tests the relation provides some of the first , direct observational evidence to test the prediction that supermassive black hole properties are determined by the halo properties of the host galaxy . | we investigate the correlation between the mass of a central supermassive black hole and the total gravitational mass of the host galaxy ( ) . the results are based on 43 galaxy - scale strong gravitational lenses from the sloan lens acs ( slacs ) survey whose black hole masses were estimated through two scaling relati... |
0909.0269 | c | we use a sample of 43 early - type galaxies , which exhibit galaxy - scale strong gravitational lensing , to derive the scaling relation between black hole mass , @xmath5 , and the total mass , @xmath0 , of the host galaxy . in this study , we use gravitational lens modeling to directly measure the total mass and the m... | we investigate the correlation between the mass of a central supermassive black hole and the total gravitational mass of the host galaxy ( ) . the results are based on 43 galaxy - scale strong gravitational lenses from the sloan lens acs ( slacs ) survey whose black hole masses were estimated through two scaling relati... | we investigate the correlation between the mass of a central supermassive black hole and the total gravitational mass of the host galaxy ( ) . the results are based on 43 galaxy - scale strong gravitational lenses from the sloan lens acs ( slacs ) survey whose black hole masses were estimated through two scaling relati... |
1604.02823 | c | in this paper , we have presented an extensive study of so melting , namely of the sudden disappearance of so after a quantum quench . we have highlighted the fact that non - local order can be particularly fragile in a dynamical context , in the presence of a perturbation which breaks the symmetry to which so is relat... | depending on which of these two situations arises , string order is either preserved or lost even at infinitesimal times in the thermodynamic limit . the fact that non - local order may be abruptly destroyed , what we call _ string - order melting _ , makes it qualitatively different from typical order parameters in th... | we investigate the evolution of string order in a spin-1 chain following a quantum quench . after initializing the chain in the affleck - kennedy - lieb - tasaki state , we analyze in detail how string order evolves as a function of time at different length scales . the hamiltonian after the quench is chosen either to ... |
0807.0012 | i | cosmological gamma - ray bursts ( grbs ) have released a tremendous amount of energy in the past and present universe . their emission covers very wide range of frequencies : a highly variable prompt phase radiates @xmath3100 kev gamma rays , while a subsequent afterglow radiates radio to x - ray photons . it is likely... | we investigate the gev emission from gamma - ray bursts ( grbs ) , using the results from the energetic gamma ray experimental telescope ( egret ) , and in view of the _ gamma - ray large area space telescope ( glast)_. assuming that the conventional prompt and afterglow photons originate from synchrotron radiation , w... | we investigate the gev emission from gamma - ray bursts ( grbs ) , using the results from the energetic gamma ray experimental telescope ( egret ) , and in view of the _ gamma - ray large area space telescope ( glast)_. assuming that the conventional prompt and afterglow photons originate from synchrotron radiation , w... |
1508.03241 | i | the migration of protoplanets embedded in accretion discs has been extensively studied in recent years ( see , e.g. , review by @xcite ) . a low - mass protoplanet excites density waves in the disc at the lindblad resonances and migrates toward the star if no other torques are exerted ( e.g. , @xcite ) . however , a co... | however , when the magnetic field is weaker ( i.e. , the plasma parameter is relatively large ) , then non - axisymmetric density waves excited by the planet lead to growth of the radial component of the field and , subsequently , to development of the magneto - rotational instability , such that the disc becomes turbu... | we investigate the migration of low - mass planets ( and ) in accretion discs threaded with a magnetic field using 2d mhd code in polar coordinates . we observed that , in the case of a strong azimuthal magnetic field where the plasma parameter is , density waves at the magnetic resonances exert a positive torque on th... |
0811.3873 | c | it had been established by several authors , that red samples defined by cmr cuts do not only contain passively evolving spheroidal galaxies , but are contaminated with spiral galaxies both in clusters @xcite and in the field @xcite . there is also evidence for a large population of star - forming and at least moderate... | we note , that edge - on spirals play a minor role ; despite being dust - reddened they form only a small fraction of spirals independent of environment . surveys ; galaxies : evolution ; galaxies : spiral ; galaxies : clusters : general ; stars : formation ; infrared : galaxies | we investigate the properties of optically passive spirals and dusty red galaxies in the a901/2 cluster complex at redshift using restframe near - uv - optical seds , 24 m ir data and hst morphologies from the stages dataset . the cluster sample is based on combo-17 redshifts with an rms precision of km / sec . we fin... |
0811.3873 | c | we have investigated the properties of galaxies , especially those of optically passive spirals , in a cluster complex at redshift @xmath0 , which consists of four cores ( a901a , a901b , a902 and sw group ) . we have used the stages dataset published by @xcite , exploiting the restframe near - uv - optical seds , ir 2... | we investigate the properties of optically passive spirals and dusty red galaxies in the a901/2 cluster complex at redshift using restframe near - uv - optical seds , 24 m ir data and hst morphologies from the stages dataset . the cluster sample is based on combo-17 redshifts with an rms precision of km / sec . this s... | we investigate the properties of optically passive spirals and dusty red galaxies in the a901/2 cluster complex at redshift using restframe near - uv - optical seds , 24 m ir data and hst morphologies from the stages dataset . the cluster sample is based on combo-17 redshifts with an rms precision of km / sec . we fin... |
0909.0265 | i | we have performed cosmological hydro - chemodynamic simulations of galaxy formation in 3 milky way - sized haloes taken from the aquarius project @xcite . a primary aim of our study has been to constrain the nature of some of the feedback processes that must have operated during galaxy formation . we have done this by ... | we investigate the properties of satellite galaxies in cosmological-body / sph simulations of galaxy formation in milky way - sized haloes . because of their shallow potential wells , satellite galaxies are very sensitive to heating processes which affect their gas content . their properties can therefore be used to co... | we investigate the properties of satellite galaxies in cosmological-body / sph simulations of galaxy formation in milky way - sized haloes . because of their shallow potential wells , satellite galaxies are very sensitive to heating processes which affect their gas content . their properties can therefore be used to co... |
1407.0570 | i | we consider a permutation to be simply an arrangement of the numbers @xmath2 for some positive @xmath3 . a permutation @xmath4 is said to be _ contained _ in another permutation @xmath5 if @xmath5 has a subsequence whose terms have the same relative ordering as those of @xmath4 . for example , @xmath6 is contained in @... | we investigate the structure of the two permutation classes defined by the sets of forbidden patterns and . by considering our approach is similar to that of `` adding a slice '' , used previously to enumerate various classes of polyominoes and other combinatorial structures . to solve the relevant functional equations... | we investigate the structure of the two permutation classes defined by the sets of forbidden patterns and . by considering how the hasse graphs of permutations in these classes can be built from a sequence of rooted source graphs , we determine their algebraic generating functions . our approach is similar to that of `... |
1507.08550 | c | we here concisely summarise the main conclusions of this work . * the [ cm]@xmath3 dust model can very precisely match all the isecs observed in the mcs , yielding estimates for the total dust mass column density versus total hydrogen column density that are fully consistent with those obtained by @xcite in a comple... | we find that in the magellanic clouds the extinction produced by classic grains is generally larger than absorption by polycyclic aromatic hydrocarbons . within this model , this hints either a physical connection between ( e.g. , a common cause for ) polycyclic aromatic hydrocarbons and the absence of middlesized dust... | we model the extinction profiles observed in the small and large magellanic clouds with a synthetic population of dust grains consisting by core - mantle particles and a collection of freeflying polycyclic aromatic hydrocarbons . all different flavors of the extinction curves observed in the magellanic clouds can be de... |
1004.4728 | i | the inclusion of nanometric conductive fillers such as carbon nanotubes @xcite , nanofibers @xcite , and graphene @xcite into insulating matrices allows to obtain electrically conductive nanocomposites with unique properties which are widely investigated and have several technological applications ranging from antistat... | we noted that the tunneling - percolation framework is quite well understood at the extreme cases of percolation - like and hopping - like behaviors but that the intermediate regime has not been previously discussed , in spite of its relevance to the intensively studied electrical properties of nanocomposites . followi... | we noted that the tunneling - percolation framework is quite well understood at the extreme cases of percolation - like and hopping - like behaviors but that the intermediate regime has not been previously discussed , in spite of its relevance to the intensively studied electrical properties of nanocomposites . followi... |
1004.4728 | m | in considering the overall conductivity arising in such composites , we attributed to each spheroid pair the tunneling conductance given in eq . where , now , for @xmath31 the inter - particle distance @xmath14 depends also on the relative orientation of the spheroids . the @xmath14 values were obtained here from the... | we show that the main features of the filler dependencies of the nanocomposite conductivity can be reproduced without introducing any _ a priori _ imposed cut - off in the inter - particle conductances , as usually done in the percolation - like interpretation of these systems . , we provide simple analytical formulas ... | we noted that the tunneling - percolation framework is quite well understood at the extreme cases of percolation - like and hopping - like behaviors but that the intermediate regime has not been previously discussed , in spite of its relevance to the intensively studied electrical properties of nanocomposites . followi... |
astro-ph0407061 | c | from the application of karhunen - love transform , an objective classification of @xmath88170,000 galaxy spectra in the sdss is performed . with a quantitative convergence criteria defined , gappy galaxy spectra can be repaired and kl eigenspectra and eigencoefficients derived . for most of the galaxy types , three ei... | we perform an objective classification of 170,000 galaxy spectra in the sloan digital sky survey ( sdss ) using the karhunen - love ( kl ) transform . with about one - sixth of the total set of galaxy spectra which will be obtained by the survey , we are able to carry out the most extensive analysis of its kind to date... | we perform an objective classification of 170,000 galaxy spectra in the sloan digital sky survey ( sdss ) using the karhunen - love ( kl ) transform . with about one - sixth of the total set of galaxy spectra which will be obtained by the survey , we are able to carry out the most extensive analysis of its kind to date... |
nucl-th9810026 | i | quantum hadrodynamics ( qhd ) and the relativistic treatment of nuclear systems has been a subject of growing interest during recent years @xcite . the model of walecka @xcite and its non - linear extensions with cubic and quartic self - interactions of the scalar - meson field @xcite have been widely used to this end ... | we perform hartree calculations of symmetric and asymmetric semi - infinite nuclear matter in the framework of relativistic models based on effective hadronic field theories as recently proposed in the literature . we investigate the implications of these terms on nuclear surface properties such as the surface energy c... | we perform hartree calculations of symmetric and asymmetric semi - infinite nuclear matter in the framework of relativistic models based on effective hadronic field theories as recently proposed in the literature . in addition to the conventional cubic and quartic scalar self - interactions , the extended models incorp... |
1311.6515 | i | the galactic supernova remnant ( snr ) kes 73 ( g27.4 + 0.0 ) has been classified as a shell - type snr and hosts the anomalous x - ray pulsar ( axp ) 1e 1841@xmath0045 ( helfand et al . 1994 ; vasisht & gotthelf 1997 ) . radio studies of the remnant show an incomplete , small diameter ( @xmath205@xmath21 ) , shell ch... | we present a _ chandra _ and _ xmm - newton _ study of the supernova remnant ( snr ) kes 73 hosting the anomalous x - ray pulsar 1e 1841 . we also discuss the possible scenario for kes 73 expanding into the late red supergiant wind phase of its massive progenitor . comparing the inferred metal abundances to core - co... | we present a _ chandra _ and _ xmm - newton _ study of the supernova remnant ( snr ) kes 73 hosting the anomalous x - ray pulsar 1e 1841 . the chandra image reveals clumpy structures across the remnant with enhanced emission along the western rim . the x - ray emission fills the radio shell and spatially correlates wi... |
1311.6515 | i | in this paper , we have performed the first detailed imaging and spectral analysis of the snr kes 73 , using all archival _ chandra _ and _ xmm - newton _ data , to determine the intrinsic properties of the supernova explosion and the physical properties of the remnant . the main results are summarized as follows : ... | the global x - ray spectrum is described by a two - component thermal model with a column density = 2.6 and a total luminosity of = 3.3 ergs s ( 0.510 kev , at an assumed distance of 8.5 kpc ) . the hard component has a temperature = 1.6 kev , a relatively low ionization timescale , and mostly solar abundances sugg... | we present a _ chandra _ and _ xmm - newton _ study of the supernova remnant ( snr ) kes 73 hosting the anomalous x - ray pulsar 1e 1841 . the chandra image reveals clumpy structures across the remnant with enhanced emission along the western rim . the x - ray emission fills the radio shell and spatially correlates wi... |
1002.2226 | i | a new era of galaxy cluster surveys , based on measuring distortions in the cosmic microwave background ( cmb ) , has begun . these distortions , known as the sunyaev - zeldovich effect @xcite , have been detected for the first time in untargeted surveys over large areas of the sky by two new mm - band experiments : th... | we present a catalog of 105 rich and massive ( ) optically - selected clusters of galaxies extracted from 70 square - degrees of public archival imaging from the blanco 4-m telescope acquired over 45 nights between 2005 and 2007 . a strong motivation for this study is to identify the massive clusters that are expected ... | we present a catalog of 105 rich and massive ( ) optically - selected clusters of galaxies extracted from 70 square - degrees of public archival imaging from the blanco 4-m telescope acquired over 45 nights between 2005 and 2007 . we use the clusters optically - derived properties to estimate photometric redshifts , op... |
1002.2226 | r | the observational quantities required as input to the cluster mass scaling relation are 200 , 200 , and . the cluster richness , 200 , is the number of e and e / s0 galaxies within a given radius , originally defined by @xcite as @xmath46 mpc , with colors and luminosities that satisfy specific conditions for membersh... | we use the clusters optically - derived properties to estimate photometric redshifts , optical luminosities , richness , and masses . we complement the optical measurements with archival xmm - newton and rosat x - ray data which provide additional luminosity and mass constraints on a modest fraction of the cluster samp... | we present a catalog of 105 rich and massive ( ) optically - selected clusters of galaxies extracted from 70 square - degrees of public archival imaging from the blanco 4-m telescope acquired over 45 nights between 2005 and 2007 . we use the clusters optically - derived properties to estimate photometric redshifts , op... |
0709.0813 | r | we describe here the analysis performed over each of the different collected data . the data included in the final sample of night - sky spectra for moonless dark nights described in section [ spec_data ] were combined to create a typical moonless night - sky spectrum at the observatory . for doing so each spectrum was... | we derive , for the first time , the typical moonless night - sky optical spectrum for the observatory . regarding the strength of the sodium pollution line in comparison with the airglow emission , the observatory does not fulfill the iau recomendations of a dark site . the zenith - corrected values of the moonless ni... | we present a characterization of the main properties of the night - sky at the calar alto observatory for the time period between 2004 and 2007 . we use optical spectrophotometric data , photometric calibrated images taken in moonless observing periods , together with the observing conditions regularly monitored at the... |
0709.0813 | c | we have characterized the main properties of the night - sky at the calar alto observatory , comparing them , when possible , with similar properties of other different astronomical sites . the main results of this article can be summarized in the following points : * an average night - sky spectrum for the moonless... | we present a characterization of the main properties of the night - sky at the calar alto observatory for the time period between 2004 and 2007 . the analysis of the winter and summer extinction curves indicates that the rayleigh scattering is almost constant along the year . the rise of the extinction in the summer se... | we present a characterization of the main properties of the night - sky at the calar alto observatory for the time period between 2004 and 2007 . we use optical spectrophotometric data , photometric calibrated images taken in moonless observing periods , together with the observing conditions regularly monitored at the... |
astro-ph0006218 | i | the cold dark matter ( cdm ) family of cosmological models provides an excellent description of a wide variety of observational results , from the earlier observable epochs detected via microwave background fluctuations to present - day observations of galaxies and large - scale structure . a concordance model " with ... | we find , in agreement with various authors , that cdm yields cuspy halos that are too centrally concentrated as compared to observations . conversely , sidm simulations using a monte carlo-body technique produce halos with significantly reduced central densities and flatter cores with increasing cross section . we dis... | we present a comparison of halo properties in cosmological simulations of collisionless cold dark matter ( cdm ) and self - interacting dark matter ( sidm ) for a range of dark matter cross sections . we find , in agreement with various authors , that cdm yields cuspy halos that are too centrally concentrated as compar... |
astro-ph0006218 | i | we present a set of cosmological self - interacting dark matter simulations having cross - sections in the range favored by @xcite ( 2000 ) . our simulations include the growth of halos from linear fluctuations in a random volume of the universe , with sufficient volume and resolution to obtain a statistical sample of ... | we present a comparison of halo properties in cosmological simulations of collisionless cold dark matter ( cdm ) and self - interacting dark matter ( sidm ) for a range of dark matter cross sections . we introduce a concentration parameter based on enclosed mass that we expect will be straightforward to determine obser... | we present a comparison of halo properties in cosmological simulations of collisionless cold dark matter ( cdm ) and self - interacting dark matter ( sidm ) for a range of dark matter cross sections . we find , in agreement with various authors , that cdm yields cuspy halos that are too centrally concentrated as compar... |
1507.00374 | i | a review of nmr studies performed on the three nanoscale molecular magnets with peculiarly - structured frustrated systems has been presented . \(i ) v15 : a model system of @xmath25=1/2 heisenberg triangular antiferromagnet . the @xmath13v nmr spectrum measurements at very low temperatures below 0.1 k and as a functio... | the dynamical magnetic properties of v15 were investigated by proton spin - lattice relaxation rate ( 1/ ) measurements . in the = 3/2 state , 1/ shows thermally activated behavior as a function of temperature . on the other hand , a temperature independent behavior of 1/ at very low temperatures is observed in the fru... | we present a comprehensive review of nuclear magnetic resonance ( nmr ) studies performed on three nanoscale molecular magnets with different configurations of geometrically frustrated antiferromagnetic ( afm ) triangles , new spin frustration systems with different novel structures : ( 1 ) the isolated single afm tria... |
astro-ph9707169 | c | we have shown that detailed absolute number counts , color and redshift distributions can be computed for lensed galaxies through an accurate modelling of the cluster - lens mass distribution . the framework for galaxy evolution has been chosen to fairly reproduce the observed number counts and redshift distribution of... | we present a detailed model of the absolute number counts , color and redshift distributions of gravitational arclets observed in clusters of galaxies . the framework adopted for galaxy evolution is chosen to fairly reproduce the observed number counts and redshift distribution of field galaxies . then , the spectropho... | we present a detailed model of the absolute number counts , color and redshift distributions of gravitational arclets observed in clusters of galaxies . the framework adopted for galaxy evolution is chosen to fairly reproduce the observed number counts and redshift distribution of field galaxies . then , the spectropho... |
1504.01888 | c | in this paper , we study coronal events that occurred in active region noaa 10646 on 2004 july 14 . we observed large - scale contraction of higher active region loops for a time span of @xmath130 minutes which was followed by an m6.2 flare and associated failed eruption of a flux rope . table [ tab1 ] presents a summ... | the pre - flare phase of this event is characterized by spectacular large - scale contraction of overlying extreme ultraviolet ( euv ) coronal loops during which the loop system was subjected to an altitude decrease of mm ( 40% of the initial height ) for an extended span of min . , we detect mw emission from the exte... | we present a detailed multi - wavelength study of the m6.2 flare which was associated with a confined eruption of a prominence using trace , rhessi , and norh observations . the pre - flare phase of this event is characterized by spectacular large - scale contraction of overlying extreme ultraviolet ( euv ) coronal loo... |
1504.01888 | i | we have presented a comprehensive multi - wavelength study of an m6.2 flare which is associated with a confined eruption of a prominence - flux rope system . the availability of a wide range of multi - wavelength data ( euv , mw , x - ray ) from the beginning of the pre - flare to the end of the impulsive phase of the ... | we present a detailed multi - wavelength study of the m6.2 flare which was associated with a confined eruption of a prominence using trace , rhessi , and norh observations . this contraction phase is accompanied by sequential euv brightenings associated with hard x - ray ( hxr ) ( up to 25 kev ) and microwave ( mw ) so... | we present a detailed multi - wavelength study of the m6.2 flare which was associated with a confined eruption of a prominence using trace , rhessi , and norh observations . the pre - flare phase of this event is characterized by spectacular large - scale contraction of overlying extreme ultraviolet ( euv ) coronal loo... |
0902.4383 | i | early - type galaxies are observed to obey a set of scaling relations that connect their photometric and kinematic properties ( e.g. kormendy relation , kormendy 1977 , faber - jackson relation , faber @xmath13 jackson 1976 ) . among these , the most notable , due to its surprising small scatter ( @xmath14dex ) , is th... | we present a fundamental plane ( fp ) analysis of 141 early - type galaxies in the shapley supercluster at based on spectroscopy from the aaomega spectrograph at the aat and photometry from the wfi on the eso / mpi 2.2 m telescope . thus , variations in/fe account for of the total variance around the fp , and of the es... | we present a fundamental plane ( fp ) analysis of 141 early - type galaxies in the shapley supercluster at based on spectroscopy from the aaomega spectrograph at the aat and photometry from the wfi on the eso / mpi 2.2 m telescope . the key feature of the survey is its coverage of low - mass galaxies down tokms . we ob... |
0902.4383 | i | we have derived the fp of a sample of 141 early - type @xmath37 galaxies in the shapley supercluster at @xmath0 . velocity dispersions and stellar population parameters were derived from the spectroscopic data of smith et al . ( 2007 ) , while r - band photometry is from the shapley optical survey @xcite . the final sa... | the shallow exponent of is a result of the extension of our sample to low velocity dispersions . considering the subsample of km s galaxies , the fp relation is , consistent with previous studies in the high - luminosity regime . however , a stronger ( ) correlation with/fe is also found . | we present a fundamental plane ( fp ) analysis of 141 early - type galaxies in the shapley supercluster at based on spectroscopy from the aaomega spectrograph at the aat and photometry from the wfi on the eso / mpi 2.2 m telescope . the key feature of the survey is its coverage of low - mass galaxies down tokms . we ob... |
astro-ph9804194 | c | we have presented hst observations of the nuclear gas and dust disk in the e4 radio galaxy ngc 7052 . wfpc2 broad- and narrow - band images were used to constrain the stellar surface brightness profile , the optical depth of the dust , and the flux distribution of the ionized gas . we have built axisymmetric models in ... | we present a hubble space telescope ( hst ) study of the nuclear region of the e4 radio galaxy ngc 7052 , which has a nuclear disk of dust and gas . the images yield the stellar surface brightness profile , the optical depth of the dust , and the flux distribution of the ionized gas . the emission lines yield the rotat... | we present a hubble space telescope ( hst ) study of the nuclear region of the e4 radio galaxy ngc 7052 , which has a nuclear disk of dust and gas . the second wide field and planetary camera ( wfpc2 ) was used to obtain , and broad - band images and an h+[nii ] narrow - band image . the images yield the stellar surfa... |
1210.2617 | i | a fundamental problem in finance , economics and management science is to determine the optimal time to invest in a project in a random environment and to address these types of problems the theory of discretionary stopping has been widely employed following karlin @xcite . in order to solve some problems of this t... | this is done within a framework based on dynamic programming techniques employing variational inequalities and links to the probabilistic approaches employing-excessive functions and martingale theory . the aim of this paper is to facilitate the the solution of a wide variety of problems , particularly in finance or ec... | we present a methodology for obtaining explicit solutions to infinite time horizon optimal stopping problems involving general , one - dimensional , it diffusions , payoff functions that need not be smooth and state - dependent discounting . this is done within a framework based on dynamic programming techniques employ... |
cond-mat0509262 | c | in this paper we have presented a microscopic theory of skyrmions in qh ferromagnets . we have shown that the skyrmion is a w@xmath1(2)-rotated state of a hole - excited state . because of an intrinsic entanglement between the electron density and the spin density implied by the w@xmath1(2 ) algebra , a w@xmath1(2 ) ro... | we present a microscopic theory of skyrmions in the monolayer quantum hall ferromagnet . it is a peculiar feature of the system that the number density and the spin density are entangled intrinsically as dictated by the w algebra . they are spin textures accompanied with density modulation that decreases the coulomb en... | we present a microscopic theory of skyrmions in the monolayer quantum hall ferromagnet . it is a peculiar feature of the system that the number density and the spin density are entangled intrinsically as dictated by the w algebra . the skyrmion and antiskyrmion states are constructed as w-rotated states of the hole - e... |
1107.0860 | i | optically thin , two - temperature accretion flows have been considered as an explanation of a variety of black hole systems and a substantial work has been done for investigation of their dynamical and spectral properties ( see , e.g. , narayan & mcclintock 2008 for a review ) . however , the developed models still in... | we present a model of optically thin , two - temperature , accretion flows using an exact monte carlo treatment of global comptonization , with seed photons from synchrotron and bremsstrahlung emission , as well as with a fully general relativistic description of both the radiative and hydrodynamic processes . we consi... | we present a model of optically thin , two - temperature , accretion flows using an exact monte carlo treatment of global comptonization , with seed photons from synchrotron and bremsstrahlung emission , as well as with a fully general relativistic description of both the radiative and hydrodynamic processes . we consi... |
1107.0860 | r | figs [ fig : rates ] and [ fig : rates_stel ] show the change of the heating and cooling rates , and the electron temperature , between our initial and final solutions . figs [ fig : flow ] and [ fig : flow_stel ] show the remaining parameters of the flow these are assumed to be the same in the initial and final solut... | , the coulomb heating dominates , the radiative efficiency is per cent and it slightly increases ( but less significantly than estimated in some previous works ) with increasing accretion rate . flows with the considered parameters produce rather hard spectra , with the photon spectral index , and with high energy cut ... | we present a model of optically thin , two - temperature , accretion flows using an exact monte carlo treatment of global comptonization , with seed photons from synchrotron and bremsstrahlung emission , as well as with a fully general relativistic description of both the radiative and hydrodynamic processes . we consi... |
1107.0860 | c | we have developed a fully gr model with global compton scattering of hot , tenuous accretion flows . the dominant source of seed photons in our model is the synchrotron process . we assume that an outer , optically - thick , accretion disc is truncated at large radii , so irradiation of the hot flow by it is negligible... | the black hole spin parameter strongly affects the flow structure within the innermost gravitational radii . the resulting large difference between the coulomb heating in models with a non - rotating and a rapidly rotating black hole is , however , outweighed by a strong contribution of compression work , much less dep... | we present a model of optically thin , two - temperature , accretion flows using an exact monte carlo treatment of global comptonization , with seed photons from synchrotron and bremsstrahlung emission , as well as with a fully general relativistic description of both the radiative and hydrodynamic processes . we consi... |
1603.08673 | r | we estimated the statistical uncertainty of our stellar parameters from the distribution of best fit values relative to their multi - epoch means . we used the results from the second stage of our fitting pipeline ( where stellar properties are allowed to vary from epoch to epoch , c.f sec . [ modelfittingsec ] ) , exc... | we show our approach can attain a single - epoch velocity precision of 25 m / s to 60 m / s over a broad range of s / n throughout our observational baseline of 1.1 years . subsequent papers will provide results for stars observed in the target clusters , analyze our dataset of rv time - series for stellar jitter an... | we present a multiplexed , high - resolution ( r,000 median ) spectroscopic survey designed to detect exoplanet candidates in two southern star clusters ( ngc 2516 and ngc 2422 ) using the michigan / magellan fiber system ( m2fs ) on the magellan / clay telescope at las campanas observatory . with 128 available fiber... |
astro-ph0108470 | i | we present a near - infrared extinction study of the protostellar collapse candidate b335 using deep integrations from hst / nicmos supplemented by data from the w.m . keck observatory . in summary : 1 . we determine transformations between the nicmos filters f160w and f222 m and the standard h and k bands in the c... | we present a near - infrared extinction study of the dark globule b335 , a protostellar collapse candidate , using data from hst / nicmos and the w.m . we find that the _ shape _ of the density profile is well matched by the collapse model , but that the _ amount _ of extinction corresponds to larger column densities ... | we present a near - infrared extinction study of the dark globule b335 , a protostellar collapse candidate , using data from hst / nicmos and the w.m . keck observatory . these data allow a new quantitative test of the `` inside - out '' collapse model previously proposed to explain molecular line profiles observed to... |
1105.3061 | i | we have presented a new numerical scheme for solving the advection equation and the vlasov equation . the present scheme solves not only point values of a profile but also its zeroth to second order piecewise moments as dependent variables , for better conservation of the information entropy . we have developed one- an... | we present a new numerical scheme for solving the advection equation and its application to vlasov simulations . the scheme treats not only point values of a profile but also its zeroth to second order piecewise moments as dependent variables , for better conservation of the information entropy . applications of the on... | we present a new numerical scheme for solving the advection equation and its application to vlasov simulations . the scheme treats not only point values of a profile but also its zeroth to second order piecewise moments as dependent variables , for better conservation of the information entropy . we have developed one-... |
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