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astro-ph0508611 | c | we have presented a new interstellar deuterium abundance study of the sight line toward 9 , and the revision of a result for , both based on spectra . our new measurement of @xmath44@xmath45 toward shows that column density measurements based on saturated lines might be erroneous , even up to a factor of two , and th... | we present a study of the deuterium abundance along the extended sight line toward 9 with the _ far ultraviolet spectroscopic explorer _ ( _ fuse _ ) . our new results confirm that the gas - phase deuterium abundance in the distant interstellar medium is significantly lower than the one measured within the local bubbl... | we present a study of the deuterium abundance along the extended sight line toward 9 with the _ far ultraviolet spectroscopic explorer _ ( _ fuse _ ) . 9 is a o9.5iii star located in the galactic disk at a distance of kpc away from the sun . both in terms of distance and column densities , 9 has the longest and den... |
1505.04799 | i | the large magellanic cloud ( lmc ) harbors the nearest giant extragalactic hii region @xcite , the tarantula nebula ( 30 doradus ) . the central region of the nebula is dominated by the cluster ngc 2070 , a collective of several dense sub - clusters ( @xcite ) whose light is dominated by massive ob stars . the most pr... | we focus on the stars within 20 pc of the center of the massive ionizing cluster of 30 doradus , ngc 2070 . we recovered the star formation history by comparing deep optical and nir color - magnitude diagrams ( cmds ) with state - of - the - art synthetic cmds generated with the latest parsec models , which include al... | we present a study of the recent star formation of 30 doradus in the large magellanic cloud ( lmc ) using the panchromatic imaging survey hubble tarantula treasury project ( http ) . in this paper we focus on the stars within 20 pc of the center of the massive ionizing cluster of 30 doradus , ngc 2070 . we recovered t... |
astro-ph0107510 | i | much observational evidence suggests that strong obscuration absorbs the strong continuum source in active galactic nuclei over a significant fraction of the solid angle ( lawrence & elvis 1982 , antonucci & miller 1985 , maiolino et al . the effects of this absorption are clearly visible in the x - ray spectra of many... | these variations rule out the simplest version of the unified models , based on a homogeneous obscuring torus , and suggest the presence of clumpy circumnuclear material on a scale well below a parsec . for lightly obscured agn ( n ) the structure function shows an increase at a timescale of yr , indicating a second ab... | we present a study of the variations in the absorbing column density of 25 x - ray defined seyfert 2 galaxies , as inferred from hard x - ray observations , on timescales from months to several years . we show that a significant variation of n ( from 20% to 80% ) is observed in almost all ( 22/25 ) the sources with mul... |
astro-ph0107510 | c | in the previous section we demonstrated that n@xmath0 variability in a timescale from months to years is present in the great majority , and possibly in all , seyfert 2 galaxies . the structure function described in the previous section is useful to quantify the general n@xmath0 variability properties of our sources . ... | 11 sources observed at least five times the typical variation time , as defined by a structure function , is less than one year for both heavily absorbed ( n ) and moderately absorbed ( n ) sources . the belr needs , like the torus , to have an axisymmetric structure . this model is closely related to that of elvis ( 2... | we present a study of the variations in the absorbing column density of 25 x - ray defined seyfert 2 galaxies , as inferred from hard x - ray observations , on timescales from months to several years . we show that a significant variation of n ( from 20% to 80% ) is observed in almost all ( 22/25 ) the sources with mul... |
cond-mat9612251 | i | in recent years , one - dimensional ( 1d ) semiconductor nanostructures have received increasing attention . the potential technological application of quantum wires ( qwrs ) , e.g. in laser devices , has fueled a search for new fabrication techniques and improved sample quality . @xcite in this area , recent investiga... | we present a theoretical investigation of the electronic and optical properties of v- and t - shaped quantum wires . valence band mixing as well as realistic sample geometries are fully included through an accurate and efficient approach that is described here in detail . we investigate the resulting valence band struc... | we present a theoretical investigation of the electronic and optical properties of v- and t - shaped quantum wires . valence band mixing as well as realistic sample geometries are fully included through an accurate and efficient approach that is described here in detail . we investigate the resulting valence band struc... |
astro-ph0605681 | c | we have analyzed the emission - line and host properties of 85224 galaxies from the sloan digital sky survey . we show that seyferts and liners form two separate branches on the standard optical diagnostic diagrams . we present a new optical classification scheme that successfully separates purely star - forming galaxi... | we present an analysis of the host properties of 85224 emission - line galaxies selected from the sloan digital sky survey . we show that seyferts and liners form clearly separated branches on the standard optical diagnostic diagrams . we derive a new empirical classification scheme which cleanly separates star - formi... | we present an analysis of the host properties of 85224 emission - line galaxies selected from the sloan digital sky survey . we show that seyferts and liners form clearly separated branches on the standard optical diagnostic diagrams . we derive a new empirical classification scheme which cleanly separates star - formi... |
1112.1697 | i | the discovery of the unusual @xmath22-ray / x - ray transient swiftj164449.3 + 573451 ( hereafter , ) , which coincided with the nucleus of an inactive galaxy at @xmath23 , has opened a new window into high - energy transient phenomena , with potential implications to our understanding of relativistic outflows in syste... | we present continued radio observations of the tidal disruption event swiftj164449.3 + 573451 extending to days after discovery . the lorentz factor is , the ambient density is , and the projected angular size isas , below the resolution of the vlba+effelsberg . assuming no future changes in the observed evolution and ... | we present continued radio observations of the tidal disruption event swiftj164449.3 + 573451 extending to days after discovery . the data were obtained with the evla , ami large array , carma , the sma , and the vlba+effelsberg as part of a long - term program to monitor the expansion and energy scale of the relativis... |
1112.1697 | c | we presented radio observations of extending to @xmath0 d and spanning a wide range of frequencies . the evolution of the radio emission changes dramatically at @xmath257 month , requiring an increase in the total energy by about an order of magnitude , a density profile of @xmath2 ( @xmath3 pc ) , and a flattening at... | the new observations reveal a significant change in the radio evolution starting at month , with a brightening at all frequencies that requires an increase in the energy by about an order of magnitude , and an overall density profile around the smbh of ( pc ) with a significant flattening at pc . the increase in energy... | we present continued radio observations of the tidal disruption event swiftj164449.3 + 573451 extending to days after discovery . the data were obtained with the evla , ami large array , carma , the sma , and the vlba+effelsberg as part of a long - term program to monitor the expansion and energy scale of the relativis... |
cond-mat0507131 | i | magnetic neutron scattering ( mns ) in high temperature superconducting cuprates usually detects about @xmath1 of the spectral weight dictated by a naive application of sum rules . for example the total weight in a wide range of energy and momentum in a recent experiment@xcite in la@xmath2ba@xmath3cuo@xmath4 , with @xm... | we present estimates in the hubbard and heisenberg models for the spectral weight in magnetic neutron scattering experiments on the cuprates . with the aid of spin - wave theory and the time dependent gutzwiller approximation in addition to the well known total moment sum rule we discuss sum rules for each component of... | we present estimates in the hubbard and heisenberg models for the spectral weight in magnetic neutron scattering experiments on the cuprates . with the aid of spin - wave theory and the time dependent gutzwiller approximation we discuss how the spectral weight is distributed among the different channels and between hig... |
1202.1829 | i | bright submillimeter - selected galaxies ( smgs * ? ? ? * ) provide a powerful probe into the distant universe . thanks to the negative @xmath5-correction in the rayleigh - jeans tail of the dust thermal emission , flux limited submillimeter surveys with 850 @xmath2 m flux density @xmath18 mjy reach an almost unifor... | hatlas j114637.9 is selected from the _ herschel_-astrophysical terahertz large area survey ( h - atlas ) as a strong lens candidate mainly based on its unusually high 500 m flux density ( mjy ) . it is the only high - redshift _ planck _ detection in the 130 deg h - atlas phase - i area . keck adaptive optics i... | we present high - resolution maps of stars , dust , and molecular gas in a strongly lensed submillimeter galaxy ( smg ) at . hatlas j114637.9 is selected from the _ herschel_-astrophysical terahertz large area survey ( h - atlas ) as a strong lens candidate mainly based on its unusually high 500 m flux density ( m... |
1202.1829 | c | we have presented high - resolution @xmath5-band , 880 @xmath2 m , and co(1@xmath60 ) observations and the near - ir - to - centimeter sed of a _ herschel_-selected strongly lensed smg at @xmath279 ( hatlas12@xmath100 ) . the smg shows distinctly different morphologies in the three images , suggesting differential mag... | the emission from the stars , dust , and gas are magnified by , , and times , respectively , by four lensing galaxies at . intrinsically , the lensed galaxy is a warm ( k ) , hyper - luminous ( ; sfr yr ) , gas - rich ( ) , young ( myr ) , and short - lived ( myr ) starburst . with physical properties similar to ... | we present high - resolution maps of stars , dust , and molecular gas in a strongly lensed submillimeter galaxy ( smg ) at . hatlas j114637.9 is selected from the _ herschel_-astrophysical terahertz large area survey ( h - atlas ) as a strong lens candidate mainly based on its unusually high 500 m flux density ( m... |
astro-ph0603044 | i | mapping the cosmic microwave background ( cmb ) polarization is one of the major challenges of future missions of observational cosmology . cmb polarization is linear and therefore can be described by the first three stokes parameters i , q and u which are generally combined to produce three fields ( modes ) , @xmath0 ... | gaussian _ dust emission . finally , we have applied our algorithm to more _ realistic _ planck full sky simulations , including synchrotron , _ realistic _ dust and free - free emissions . cosmic microwave background cosmology : observations methods : data analysis | we present in this paper the polemica ( polarized expectation - maximization independent component analysis ) algorithm which is an extension to polarization of the smica ( spectral matching independent component analysis ) temperature multi - detectors multi - components ( md - mc ) component separation method . this ... |
astro-ph0603044 | i | we present in this paper the polemica algorithm which is an extension to polarization of the smica temperature md - mc blind component separation method developed by @xcite . both algorithms work in harmonic space and are based on the spectral matching of the data to a noisy linear mixture of uncorrelated physical comp... | we present in this paper the polemica ( polarized expectation - maximization independent component analysis ) algorithm which is an extension to polarization of the smica ( spectral matching independent component analysis ) temperature multi - detectors multi - components ( md - mc ) component separation method . this ... | we present in this paper the polemica ( polarized expectation - maximization independent component analysis ) algorithm which is an extension to polarization of the smica ( spectral matching independent component analysis ) temperature multi - detectors multi - components ( md - mc ) component separation method . this ... |
astro-ph0409053 | i | this paper presents the 8th catalog of gamma - ray burst ( grb ) localizations obtained by arrival time analysis , or `` triangulation '' between the missions in the 3rd interplanetary network ( ipn ) , which began operations in 1990 and continues to operate today . two of these catalogs ( hurley et al . 1999a , b ) we... | ( 2001 ) and stern et al . ( 2001 ) . ipn confirmations have been obtained by analyzing the data from 11 experiments . for any given burst observed by batse and one other distant spacecraft , arrival time analysis ( or `` triangulation '' ) results in an annulus of possible arrival directions we have been able to ident... | we present interplanetary network ( ipn ) detection and localization information for 211 gamma - ray bursts ( grbs ) observed as untriggered events by the burst and transient source experiment ( batse ) , and published in catalogs by kommers et al . ( 2001 ) and stern et al . ( 2001 ) . ipn confirmations have been obta... |
astro-ph0210132 | r | in this subsection , we present the results of the numerical simulations for the angular images of uhecrs in a variety of conditions concerning strength and correlation length of the egmf and the limiting magnitudes of galaxies . we show the angular images for two energy range @xmath104 ev and above @xmath10 ev , about... | we use the ors galaxy sample , which allow us to accurately quantify the contribution of nearby sources to the energy spectrum and the arrival distribution , as a source model . we find that the arrival distribution of uhecrs become to be most isotropic as restricting sources to luminous galaxies . | we present numerical simulations on the propagation of uhe protons with energies of ev in extragalactic magnetic fields over 1 gpc . we use the ors galaxy sample , which allow us to accurately quantify the contribution of nearby sources to the energy spectrum and the arrival distribution , as a source model . the sampl... |
astro-ph0210132 | c | we presented the results of numerical simulations on the propagation of uhe protons with energies of @xmath0 ev injected by a discrete distribution of galaxies using the ors data sample , which is properly corrected for the selection effect and absence of galaxies in the zone of avoidance ( @xmath1 ) . we adopted stren... | we present numerical simulations on the propagation of uhe protons with energies of ev in extragalactic magnetic fields over 1 gpc . we calculate three observable quantities , cosmic ray spectrum , harmonic amplitude , and two point correlation function from our data of numerical simulations . with these quantities , h... | we present numerical simulations on the propagation of uhe protons with energies of ev in extragalactic magnetic fields over 1 gpc . we use the ors galaxy sample , which allow us to accurately quantify the contribution of nearby sources to the energy spectrum and the arrival distribution , as a source model . the sampl... |
astro-ph0210132 | c | in this section , we present our conclusions obtained from comprehensive study on the bottom - up scenarios . for the origin of ehecrs , we conclude that large fraction of the agasa 8 events above @xmath10 ev might originate in the topdown scenarios , or that the cosmic ray flux measured by the hires experiment might b... | however , since mean number of sources within the gzk sphere is only in this case , the agasa 8 events above ev , which do not constitute the clustered events with each other , can not be reproduced . on the other hand , thus , we conclude that large fraction of the agasa 8 events above ev might originate in the topdow... | we present numerical simulations on the propagation of uhe protons with energies of ev in extragalactic magnetic fields over 1 gpc . we use the ors galaxy sample , which allow us to accurately quantify the contribution of nearby sources to the energy spectrum and the arrival distribution , as a source model . the sampl... |
astro-ph0509315 | c | we first selected cttss and haebe stars in @xmath0 ori , oriob1 , and lacob1 based on the 2mass colors . these pms stars are then utilized to trace recent star - forming activities . the young stars are found to be lined up in an age sequence between massive stars and comet - shaped clouds or bright - rimmed clouds , w... | we find that the classical t tauri stars and herbig ae / be stars tend to line up between luminous o stars and bright - rimmed or comet - shaped clouds ; the closer to a cloud the progressively younger they are . our positional and chronological study lends support to the validity of the radiation - driven implosion me... | we present our diagnosis of the role that massive stars play in the formation of low- and intermediate - mass stars in ob associations ( the ori region , the oriob1 , and lacob1 associations ) . we find that the classical t tauri stars and herbig ae / be stars tend to line up between luminous o stars and bright - rimme... |
0805.4492 | c | while there is a consensus that the origin of the kev x - ray continuum emission from quasars is inverse compton scattering ( e.g. , see the review of reynolds & nowak 2003 ) , the extent and geometric configuration of the emission region is less clear . in the standard disk - corona model ( e.g. , haardt & maraschi 19... | j1131 is of particular interest because of its high amplitude ( a factor of 20 ) . the differences between the x - ray and optical flux ratios of he 1104 are less dramatic , but there is no significant soft x - ray or dust absorption , implying the presence of x - ray microlensing in this system as well . combining th... | we present results from a monitoring campaign performed with the _ chandra x - ray observatory _ of the gravitationally lensed quasars rx j1131 and he 1104 . we detect significant x - ray variability in all images of both quasars . the flux variability detected in image a of rx j1131 is of particular interest becaus... |
0806.0866 | i | we have argued that the plume and long tail of m86 formed due to ram pressure stripping forces generated as m86 falls into the virgo cluster . several studies have found a similar interpretation for the formation of this feature ( e.g. , forman et al . 1979 ; fabian et al.1980 ; rangarajan et al . 1995 , however see br... | we detect three main diffuse components : the virgo icm at.4 kev , the extended halo of m86 at.2 kev , and the cooler central and stripped gas of m86 at.8 kev . the tail is 150 kpc in projection , and a simple estimate gives a lower limit on the true length of the tail of 380 kpc , making this the longest ram pres... | we present results from a mosaic of nine _ chandra _ observations of m86 and the surrounding field . we detect three main diffuse components : the virgo icm at.4 kev , the extended halo of m86 at.2 kev , and the cooler central and stripped gas of m86 at.8 kev . the most striking feature is a long tail of emission , ... |
astro-ph0507578 | i | kh 15d , an extraordinary pre - main - sequence eclipsing binary system , is located in the young ( 24 myr ) open cluster ngc 2264 ( @xmath11 @xmath12 760 pc ) . in 1970 , a russian circular announced the discovery of eight new variable stars in ngc 2264 ( badalian & erastova 1970 ) . kh 15d was among these , and was... | we present results from the most recent ( 20022004 ) observing campaigns of the eclipsing system kh 15d , in addition to re - reduced data obtained at van vleck observatory ( vvo ) between 1995 and 2000 . phasing nine years of photometric data shows substantial evolution in the width and depth of the eclipses . these ... | we present results from the most recent ( 20022004 ) observing campaigns of the eclipsing system kh 15d , in addition to re - reduced data obtained at van vleck observatory ( vvo ) between 1995 and 2000 . phasing nine years of photometric data shows substantial evolution in the width and depth of the eclipses . the mo... |
astro-ph0507578 | r | the full data set now contains 6694 measurements of cousins @xmath14 magnitude covering nine seasons of observation between 1995 october and 2004 march , as well as additional color measurements . magnitudes in @xmath14 are given in table 6 and colors are given in table 7 . both tables , in full , are available electro... | the most recent data indicate that the eclipses are now approximately 24 days in length , or half the orbital period . a periodogram of the entire data set yields a highly significant peak at 48.37 0.01 days , which is in accord with the spectroscopic period of 48.38 0.01 days determined by johnson et al . we interpret... | we present results from the most recent ( 20022004 ) observing campaigns of the eclipsing system kh 15d , in addition to re - reduced data obtained at van vleck observatory ( vvo ) between 1995 and 2000 . phasing nine years of photometric data shows substantial evolution in the width and depth of the eclipses . the mo... |
1403.4240 | i | interacting supernovae ( sne ) are stellar explosions that collide with dense circumstellar material ( csm ) produced by the progenitor star . these events are raising critical new questions about the final evolutionary phases of massive stars and the mass - loss episodes that ensue before core collapse ( smith & arnet... | we present spectropolarimetry of sn 2009ip throughout the evolution of its 2012 explosion . during the 2012a phase , [ firstpage ] circumstellar matter stars : evolution stars : winds , outflows supernovae : general supernovae : individual ( sn 2009ip ) | we present spectropolarimetry of sn 2009ip throughout the evolution of its 2012 explosion . during the 2012a phase , when the spectrum exhibits broad p - cygni lines , we measure a-band polarization of% at a position angle of , indicating substantial asphericity for the 2012a outflow . near the subsequent peak of the ... |
1403.4240 | r | linear polarization is expressed as the quadratic sum of the @xmath28 and @xmath29 stokes parameters , @xmath43 , and the position angle on the sky is given by @xmath44 , while carefully taking into account the quadrants in the @xmath28@xmath29 plane where the inverse tangent angle is located . since @xmath7 is a posit... | around 30 days past peak , coincident with a substantial bump in the declining light curve , we measure% and another significant shift in . at this point , broad photospheric lines have again become prominent and exhibit significant variations in relative to the continuum , particularly he i / na i d. by 60 days pas... | we present spectropolarimetry of sn 2009ip throughout the evolution of its 2012 explosion . during the 2012a phase , when the spectrum exhibits broad p - cygni lines , we measure a-band polarization of% at a position angle of , indicating substantial asphericity for the 2012a outflow . near the subsequent peak of the ... |
1403.4240 | c | the most natural explanation for linear polarization of a sn is thomson scattering by free electrons , either from the sn photosphere or within the zone of intense csm interaction , which includes the forward shock , the reverse shock , and the cold dense shell ( cds ) in between . for most sne iin , including sn 200... | when the spectrum exhibits broad p - cygni lines , we measure a-band polarization of% at a position angle of , indicating substantial asphericity for the 2012a outflow . near the subsequent peak of the 2012b phase , when the spectrum shows signs of intense interaction with circumstellar material ( csm ) , we measure% a... | we present spectropolarimetry of sn 2009ip throughout the evolution of its 2012 explosion . during the 2012a phase , when the spectrum exhibits broad p - cygni lines , we measure a-band polarization of% at a position angle of , indicating substantial asphericity for the 2012a outflow . near the subsequent peak of the ... |
1703.02566 | c | we present submillimeter array 880 @xmath0 m polarization observations of six massive dense cores in the dr21 filament . with the complementary archival polarimetric observations from scupol of the jcmt @xcite , we are able to characterize the magnetic field properties from the filament to the cores . our main results ... | we present submillimeter array 880 m dust polarization observations of six massive dense cores in the dr21 filament . the dust polarization shows complex magnetic field structures in the massive dense cores with sizes of 0.1 pc , in contrast to the ordered magnetic fields of the parsec - scale filament . the major axes... | we present submillimeter array 880 m dust polarization observations of six massive dense cores in the dr21 filament . the dust polarization shows complex magnetic field structures in the massive dense cores with sizes of 0.1 pc , in contrast to the ordered magnetic fields of the parsec - scale filament . the major axes... |
1511.04184 | c | * we have presented the first measurements of the rest - frame 1040 kev xlf of agns at @xmath0 based on a sample of 94 sources selected at comparable observed - frame energies ( 824 kev ) . our study takes advantage of the unprecedented sensitivity at these energies that is achieved by the _ nustar _ survey program . *... | we present the first direct measurements of the rest - frame 1040 kev x - ray luminosity function ( xlf ) of active galactic nuclei ( agns ) based on a sample of 94 sources at , selected at 824 kev energies from sources in the _ nustar _ extragalactic survey program . however , different models of the intrinsic distri... | we present the first direct measurements of the rest - frame 1040 kev x - ray luminosity function ( xlf ) of active galactic nuclei ( agns ) based on a sample of 94 sources at , selected at 824 kev energies from sources in the _ nustar _ extragalactic survey program . our results are consistent with the strong evoluti... |
1610.06932 | i | galaxy gas reservoirs are the raw fuel for star formation and thus play a key role in galaxy evolution . . therefore , understanding the extent to which environment governs galaxy gas content is a fundamental ingredient to understanding galaxy assembly as a whole . several studies have highlighted the link between star... | we present the h mass inventory for the resolved spectroscopy of a local volume ( resolve ) survey , a volume - limited , multi - wavelength census of galaxies spanning diverse environments and complete in baryonic mass down to dwarfs of . this first 21 cm data release provides robust detections or strong upper limits ... | we present the h mass inventory for the resolved spectroscopy of a local volume ( resolve ) survey , a volume - limited , multi - wavelength census of galaxies spanning diverse environments and complete in baryonic mass down to dwarfs of . this first 21 cm data release provides robust detections or strong upper limits ... |
1610.06932 | c | we have presented the first major release of 21 cm data for the resolve survey , a multi - wavelength , volume - limited census of galaxies in the local universe complete into the dwarf mass regime and spanning diverse environments . the census currently provides detections and strong upper limits for @xmath294% of res... | we examine global atomic gas - to - stellar mass ratios ( ) in relation to galaxy environment using several metrics : group dark matter halo mass , central / satellite designation , relative mass density of the cosmic web , and distance to nearest massive group . the fraction of gas - poor centrals increases with large... | we present the h mass inventory for the resolved spectroscopy of a local volume ( resolve ) survey , a volume - limited , multi - wavelength census of galaxies spanning diverse environments and complete in baryonic mass down to dwarfs of . this first 21 cm data release provides robust detections or strong upper limits ... |
0909.2051 | i | stellar - mass black hole x - ray binaries ( bhxrbs ) and active galactic nuclei ( agns ) are both powered by accretion onto a black hole ( bh ) . in many cases these systems emit radiation over several decades of frequency and possess relativistic jets @xcite . the above similarities in the basic generation of energy ... | we present the results of extensive multi - frequency monitoring of the radio galaxy 3c 120 between 2002 and 2007 at x - ray ( 2 - 10 kev ) , optical ( r and v band ) , and radio ( 14.5 and 37 ghz ) wave bands , as well as imaging with the very long baseline array ( vlba ) at 43 ghz . over the 5 yr of observation , sig... | we present the results of extensive multi - frequency monitoring of the radio galaxy 3c 120 between 2002 and 2007 at x - ray ( 2 - 10 kev ) , optical ( r and v band ) , and radio ( 14.5 and 37 ghz ) wave bands , as well as imaging with the very long baseline array ( vlba ) at 43 ghz . over the 5 yr of observation , sig... |
0909.2051 | c | the physical cause of the connection between events in the central engine and the jet of bhxrbs and agns is currently a matter of considerable speculation . if the jet is magnetically launched from the accretion disk @xcite , then there must be a link between the magnetic state at the base of the jet and the accretion ... | this implies that , in this radio galaxy , the radiative state of accretion disk plus corona system , where the x - rays are produced , has a direct effect on the events in the jet , where the radio emission originates . are strongly correlated in 3c 120 , which implies that the optical emission in this object arises f... | we present the results of extensive multi - frequency monitoring of the radio galaxy 3c 120 between 2002 and 2007 at x - ray ( 2 - 10 kev ) , optical ( r and v band ) , and radio ( 14.5 and 37 ghz ) wave bands , as well as imaging with the very long baseline array ( vlba ) at 43 ghz . over the 5 yr of observation , sig... |
0909.2051 | i | this paper presents well - sampled , 5-yr - long light curves of 3c 120 between 2002 and 2007 at x - ray , optical , and radio wavebands , as well as monthly images obtained with the vlba at 43 ghz . we have calculated the broad - band x - ray power spectral density ( psd ) of 3c 120 . the x - ray and radio light curve... | are followed by ejections of bright superluminal knots in the vlba images . we numerically model multi - wavelength light curves of 3c 120 from such a system with the optical - uv emission produced in the disk and the x - rays generated by scattering of thermal photons by hot electrons in the corona . from the comparis... | we present the results of extensive multi - frequency monitoring of the radio galaxy 3c 120 between 2002 and 2007 at x - ray ( 2 - 10 kev ) , optical ( r and v band ) , and radio ( 14.5 and 37 ghz ) wave bands , as well as imaging with the very long baseline array ( vlba ) at 43 ghz . over the 5 yr of observation , sig... |
astro-ph0204245 | i | there has been outstanding progress in solar neutrino research in the last several years . the large water cherenkov detectors superkamiokande ( sk ) @xcite and the sudbury neutrino observatory ( sno ) @xcite have begun to measure the high - energy solar neutrinos from @xmath7b decay in real time with a high counting... | we present the results of measurements of the solar neutrino capture rate in gallium metal by the russian - american gallium experiment sage during slightly more than half of a 22-year cycle of solar activity . ( syst . ) snu . this represents only slightly more than half of the predicted standard solar model rate of... | we present the results of measurements of the solar neutrino capture rate in gallium metal by the russian - american gallium experiment sage during slightly more than half of a 22-year cycle of solar activity . combined analysis of the data of 92 runs during the 12-year period january 1990 through december 2001 gives ... |
1308.3580 | r | maser features of pz cas are spatially distributed over a region of 200 @xmath48 200 square mas . we identified 52 maser spots that are assembled into 16 maser features . those maser features were arranged in 11 maser groups , which are labeled _ a _ to _ k _ , as shown in figure [ fig:05 ] . the groups _ a _ to _ e ... | we present the very long baseline interferometry ho maser monitoring observations of the red supergiant , pz cas , at 12 epochs from 2006 april to 2008 may . we fitted maser motions to a simple model composed of a common annual parallax and linear motions of the individual masers . the maser motions with the parallax ... | we present the very long baseline interferometry ho maser monitoring observations of the red supergiant , pz cas , at 12 epochs from 2006 april to 2008 may . we fitted maser motions to a simple model composed of a common annual parallax and linear motions of the individual masers . the maser motions with the parallax ... |
astro-ph0210555 | r | infrared reflection nebulosity is associated with two distinct regions of ionized gas ( fig . 1 ) : w75 n ( a ) at position @xmath31 @xmath53 and w75 n ( b ) at position @xmath31 @xmath53 ( e.g. haschick et al . 1981 , moore et al . 1988 ) . shock - excited emission ( figs . 2 & 3 ) is present in the north - e... | we present to resolution 3 mm continuum and line emission and near infrared k , , and [ feii ] images toward the massive star forming region w75 n. the co emission uncovers a complex morphology of multiple , overlapping outflows . nine cores of millimeter - wavelength emission highlight the locations of embedded pro... | we present to resolution 3 mm continuum and line emission and near infrared k , , and [ feii ] images toward the massive star forming region w75 n. the co emission uncovers a complex morphology of multiple , overlapping outflows . a total flow mass of m extends 3 pc from end - to - end and is being driven by at l... |
astro-ph0210555 | c | the total molecular mass of outflowing gas from the mm 1 and mm 2 combined flows ( @xmath86 relative to @xmath5 ) is @xmath3 m. hunter et al . ( 1994 ) found @xmath107 with a rough scaling performed to take into account an optical depth correction . however , their image covered only the inner region of the flow s... | more than 10% of the molecular cloud has been accelerated to high velocities by the molecular flows ( relative to ) and the mechanical energy in the outflowing gas is roughly half the gravitational binding energy of the cloud . the infrared line emission morphology suggests that only slow , non - dissociative j - type... | we present to resolution 3 mm continuum and line emission and near infrared k , , and [ feii ] images toward the massive star forming region w75 n. the co emission uncovers a complex morphology of multiple , overlapping outflows . a total flow mass of m extends 3 pc from end - to - end and is being driven by at l... |
astro-ph0210555 | i | w75 n represents an example of clustered , massive star formation . the cluster covers a wide range of evolutionary stages ; from stars with no apparent circumstellar material to deeply embedded protostars actively powering massive outflows . the co outflow measures more than 3 pc from end - to - end and is produced ... | a total flow mass of m extends 3 pc from end - to - end and is being driven by at least four late to early - b protostars . the w75 n cluster members represent a range of evolutionary stages , from stars with no apparent circumstellar material to deeply embedded protostars that are actively powering massive outflow... | we present to resolution 3 mm continuum and line emission and near infrared k , , and [ feii ] images toward the massive star forming region w75 n. the co emission uncovers a complex morphology of multiple , overlapping outflows . a total flow mass of m extends 3 pc from end - to - end and is being driven by at l... |
1208.5698 | i | the main contributors to the uv emission from any stellar system are the hottest stars . indeed blue horizontal branch ( hb ) stars are well known to be among the hottest stellar populations in globular clusters ( gcs ) and contribute substantially to the uv radiation observed from old stellar systems ( welch & code , ... | we present ultraviolet ( uv ) integrated colors of 44 galactic globular clusters ( ggcs ) observed with the galaxy evolution explorer ( galex ) in both and bands . this allows us to determine how the integrated uv colors are driven by hot stellar populations , primarily horizontal branch stars and their progeny . we al... | we present ultraviolet ( uv ) integrated colors of 44 galactic globular clusters ( ggcs ) observed with the galaxy evolution explorer ( galex ) in both and bands . this data - base is the largest homogeneous catalog of uv colors ever published for stellar systems in our galaxy . the proximity of ggcs makes it possible ... |
1209.3788 | i | the stellar mass of a galaxy is intricately connected to that galaxy s environment @xcite , metal abundance @xcite , star formation history @xcite , dark matter halo mass @xcite , and just about any other principal characteristic one cares to consider . yet , we rely on estimates of stellar masses that are potentially ... | the nature of this failure , in which is at first underestimated and then overestimated with age , invalidates potential simple solutions involving a rescaling of either the measured masses or modeled luminosities . independent of further conjectures regarding the origin of this problem , this result highlights a basic... | we present velocity dispersion measurements of 20 local group stellar clusters ( log(age [ yrs ] ) ) from integrated light spectra and examine the evolution of the stellar mass - to - light ratio , . we find that the clusters deviate from the evolutionary tracks corresponding to simple stellar populations drawn from st... |
1209.3788 | i | using determinations of the velocity dispersions of 18 stellar clusters within the local group that span 7 @xmath3 log ( age [ yrs ] ) @xmath3 10.2 , we trace the evolution of the stellar mass - to - light ratio of simple stellar populations . we find that the observed behavior does not match simple theoretical expecta... | we present velocity dispersion measurements of 20 local group stellar clusters ( log(age [ yrs ] ) ) from integrated light spectra and examine the evolution of the stellar mass - to - light ratio , . we find that the clusters deviate from the evolutionary tracks corresponding to simple stellar populations drawn from st... | we present velocity dispersion measurements of 20 local group stellar clusters ( log(age [ yrs ] ) ) from integrated light spectra and examine the evolution of the stellar mass - to - light ratio , . we find that the clusters deviate from the evolutionary tracks corresponding to simple stellar populations drawn from st... |
0707.3069 | i | in various domains of physics a description in terms of fields is frequently used . hydrodynamics represents a first example in which some fields ( densities , velocities , ... ) are introduced for describing the properties of a coarse grained entity the so - called fluid particle . later , field theory ( ft ) has be... | we propose a formally exact statistical field theory for describing classical fluids with ingredients similar to those introduced in quantum field theory . it has been shown that there exists a mapping between this approach and the standard statistical mechanics given in terms of mayer function expansion . some perspec... | we propose a formally exact statistical field theory for describing classical fluids with ingredients similar to those introduced in quantum field theory . we consider the following essential and related problems : ) how to find the correct field functional ( hamiltonian ) which determines the partition function , ) ho... |
0707.3069 | c | from standard text books @xcite , we know that the so - called classical statistical mechanics contains two basic properties governed by quantum physics . namely , the thermal de broglie wavelength , @xmath12 , and the indiscernibility of particles which originates from @xmath179 distinct particles a @xmath180 coeffici... | we can use a simple hamiltonian in which a local functional transposes , in terms of fields , the equivalent of the indiscernibility of particles . then a non - local term associated with an interaction pair potential is introduced in the hamiltonian . we show on three properties ( the chemical potential , the so - cal... | we propose a formally exact statistical field theory for describing classical fluids with ingredients similar to those introduced in quantum field theory . we consider the following essential and related problems : ) how to find the correct field functional ( hamiltonian ) which determines the partition function , ) ho... |
1209.4416 | i | in this study we consider the problem of parameter - free identification of a class of dynamical systems . the approach we propose is derived from a general method for the reconstruction of the constitutive relations in systems described by partial differential equations ( pdes ) which was initially introduced in @xcit... | we propose a general framework for parameter - free identification of a class of dynamical systems . here , the propagator is approximated in terms of an arbitrary function of the state , in contrast to a polynomial or galerkin expansion used in traditional approaches . the computational aspect of the identification me... | we propose a general framework for parameter - free identification of a class of dynamical systems . here , the propagator is approximated in terms of an arbitrary function of the state , in contrast to a polynomial or galerkin expansion used in traditional approaches . the proposed formulation relies on variational da... |
1605.08422 | i | in this work we consider time - independent schrdinger equation to calculate vibrational spectra of molecules . the goal is to find smallest eigenvalues and corresponding eigenfunctions of the hamiltonian operator . the key assumption that we use is that potential energy surface ( pes ) can be approximated by a small n... | we propose a new algorithm for calculation of vibrational spectra of molecules using tensor train decomposition . under the assumption that eigenfunctions lie on a low - parametric manifold of low - rank tensors we suggest using well - known iterative methods that utilize matrix inversion ( lobpcg , inverse iteration )... | we propose a new algorithm for calculation of vibrational spectra of molecules using tensor train decomposition . under the assumption that eigenfunctions lie on a low - parametric manifold of low - rank tensors we suggest using well - known iterative methods that utilize matrix inversion ( lobpcg , inverse iteration )... |
1603.09591 | c | are shown here for reference . see text for details . colour coding indicates region , as defined by @xcite : red , oph a ; orange , oph a@xmath168 ( low - column - density region surrounding oph a ) ; dark green , oph b1 ; light green , oph b2 ; blue , oph c ; dark purple , oph e ; light purple , oph f. solid black li... | we hypothesise a ` starless core desert ' in this quadrant of the virial plane , which may result from cores initially forming as pressure - confined objects . we conclude that a virially - bound and pressure - confined core will not necessarily evolve to become gravitationally bound , and thus can not be considered pr... | we propose an analytical model for the quasistatic evolution of starless cores confined by a constant external pressure , assuming that cores are isothermal and obey a spherically - symmetric density distribution . we model core evolution for plummer - like and gaussian density distributions in the adiabatic and isothe... |
1506.02905 | i | fluctuation relations are central to our present understanding of statistical mechanics . their long and distinguished history goes back to at least the studies by callen and welton @xcite , green @xcite and kubo @xcite , which were inspired by the works of einstein on the brownian movement @xcite and of johnson @xcite... | we propose an experimental setup to measure the work performed in a normal - metal / insulator / superconducting ( nis ) junction , subjected to a voltage change and in contact with a thermal bath . we compute the performed work and argue that the associated heat release can be measured experimentally . our results all... | we propose an experimental setup to measure the work performed in a normal - metal / insulator / superconducting ( nis ) junction , subjected to a voltage change and in contact with a thermal bath . we compute the performed work and argue that the associated heat release can be measured experimentally . our results are... |
1011.1939 | i | coordinated networks of mobile robots are already in use for environmental monitoring and warehouse logistics . in the near future , autonomous robotic teams will revolutionize transportation of passengers and goods , search and rescue operations , and other applications . these tasks share a common feature : the robot... | the algorithm has two components : ( 1 ) a motion protocol to ensure that neighboring robots communicate at least sporadically , and ( 2 ) a pairwise partitioning rule to update territory ownership when two robots communicate . by studying an appropriate dynamical system on the space of partitions of the graph vertices... | we propose distributed algorithms to automatically deploy a team of mobile robots to partition and provide coverage of a non - convex environment . to handle arbitrary non - convex environments , we represent them as graphs . our partitioning and coverage algorithm requires only short - range , unreliable pairwise `` g... |
1410.3104 | i | the last years have witnessed the development of heterogeneity in clusters and datacenters . two main reasons have led to this situation today . the first one is due to the maintenance and evolution of the components in the datacenters : different generations of computers are commonly seen in production datacenters sin... | this leads to improved energy usage in a heterogeneous datacenter including the cooling of the computer rooms . we propose a heuristic to solve the server placement problem and we design a generic greedy framework for the online scheduling problem . we derive several single - objective heuristics ( for performance , en... | we propose in this paper to study the energy- , thermal- and performance - aware resource management in heterogeneous datacenters . witnessing the continuous development of heterogeneity in datacenters , we are confronted with their different behaviors in terms of performance , power consumption and thermal dissipation... |
1407.3554 | r | if @xmath17 and @xmath18 are knots in @xmath15 , then @xmath1 . the proposition is trivial if one of @xmath17 or @xmath18 is the unknot , so suppose that both are non - trivial knots . assume also that @xmath22 . let @xmath232 be the `` swallow - follow '' torus in @xmath625 which swallows the @xmath18 summand and f... | we conclude for any pair of knots , where denotes the tunnel number of . it is not difficult to see that , although it takes some work to find examples where equality is achieved in this bound , , . it is known that for any pair of non - trivial knots in , and more generally that . in the case that and are small , i... | we prove a theorem which bounds heegaard genus from below under special kinds of toroidal amalgamations of-manifolds . as a consequence , we conclude for any pair of knots , where denotes the tunnel number of . the tunnel number of a knot can be defined by the equation , where denotes heegaard genus and is an open r... |
1403.5074 | i | first order methods have recently been widely applied to solve convex optimization problems in a variety of areas including machine learning and signal processing . in particular , proximal gradient algorithms ( a.k.a . forward - backward splitting algorithms ) and their accelerated variants have received considerable ... | we prove novel convergence results for a stochastic proximal gradient algorithm suitable for solving a large class of convex optimization problems , where a convex objective function is given by the sum of a smooth and a possibly non - smooth component . we consider the iterates convergence and derive non asymptotic bo... | we prove novel convergence results for a stochastic proximal gradient algorithm suitable for solving a large class of convex optimization problems , where a convex objective function is given by the sum of a smooth and a possibly non - smooth component . we consider the iterates convergence and derive non asymptotic bo... |
math9903176 | i | the plancherel measure is probability measure defined on the set @xmath5 of irreducible representations @xmath6 of any finite group @xmath7 . concretely , the measure of a representation @xmath6 is @xmath8 . it is called plancherel because the fourier transform @xmath9 is an isometry just like in the classical plancher... | we prove the conjecture of baik , deift , and johansson which says that with respect to the plancherel measure on the set of partitions of , the rows of behave , suitably scaled , like the 1st , 2nd , 3rd , and so on eigenvalues of a gaussian random hermitian matrix as . our proof is based on an interplay between maps ... | we prove the conjecture of baik , deift , and johansson which says that with respect to the plancherel measure on the set of partitions of , the rows of behave , suitably scaled , like the 1st , 2nd , 3rd , and so on eigenvalues of a gaussian random hermitian matrix as . our proof is based on an interplay between maps ... |
1607.08119 | i | a common technique in theoretical and applied kinematics is the use of a point model for the group @xmath0 of rigid body displacements . one prominent example is the projectivised dual quaternion model of @xmath0 which exhibits particularly nice geometric and algebraic properties @xcite . in this article , we revisit s... | preserve the two families of rulings of an exceptional three - dimensional quadric . the constraint variety of a dyad with two revolute joints is a regular ruled quadric in a three - space that contains a `` null quadrilateral '' . keywords : kinematic map , dual quaternion , study quadric , null cone , revolute joint ... | we provide necessary and sufficient conditions for admissible transformations in the projectivised dual quaternion model of rigid body displacements and we characterise constraint varieties of dyads with revolute and prismatic joints in this model . projective transformations induced by coordinate changes in moving and... |
1607.08119 | c | we provided necessary and sufficient geometric conditions on the transformation group induced by coordinate changes in the fixed and moving frame and on the kinematic image of 2r , rp , and pr dyads . while many properties of these objects are already known , sufficiency of certain collections of conditions seems to be... | we provide necessary and sufficient conditions for admissible transformations in the projectivised dual quaternion model of rigid body displacements and we characterise constraint varieties of dyads with revolute and prismatic joints in this model . projective transformations induced by coordinate changes in moving and... | we provide necessary and sufficient conditions for admissible transformations in the projectivised dual quaternion model of rigid body displacements and we characterise constraint varieties of dyads with revolute and prismatic joints in this model . projective transformations induced by coordinate changes in moving and... |
0705.1384 | i | the notion of pathwidth of a matroid has received some recent attention in the matroid theory literature @xcite , @xcite . this notion has long been studied in the coding theory literature , where it is used as a measure of trellis complexity of a linear code @xcite , @xcite , @xcite . however , there appears to be no ... | , we show that the problem of determining the pathwidth of a representable matroid is np - hard . , we also consider the class of-representable matroids of pathwidth at most , and correspondingly , the family of linear codes over with trellis - width at most . these are easily seen to be minor - closed . since these ma... | we relate the notion of matroid pathwidth to the minimum trellis state - complexity ( which we term trellis - width ) of a linear code , and to the pathwidth of a graph . by reducing from the problem of computing the pathwidth of a graph , we show that the problem of determining the pathwidth of a representable matroid... |
astro-ph0310044 | r | the physical parameters of the veelr filaments are tabulated in table 1 . the recession velocities of the filaments shown in column 5 are those of h@xmath0 . as the spectral resolution of our spectra , @xmath26 , is too low to allow accurate measurement of the velocity dispersion of the emission - lines , we list the v... | in addition to photoionization , shock heating probably contributes to the ionization of the gas . in particular , the filaments outside the ionization cone of the seyfert nucleus are mainly excited by shocks . the predicted shock velocity is 300 km s , which is comparable to the velocities of the filaments . | we report here the results of deep optical spectroscopy of the very extended emission - line region ( veelr ) found serendipitously around the seyfert 2 galaxy ngc 4388 in the virgo cluster using the subaru telescope . the h recession velocities of most of the filaments of the region observed are highly blue - shifted... |
astro-ph0310044 | c | yos02 discussed the origin of the gas of the veelr from a morphological point of view , and concluded that there are two possibilities for the origin of the veelr : it is either the tidal debris of a past minor merger , or the disk gas of ngc 4388 stripped by the ram pressure of the hot icm . here , we examine these tw... | the velocity field is complicated , and from the kinematic and morphological points of view , there seem to be several streams of filaments : low velocity filaments , with radial velocities with respect to the systemic velocity of ngc 4388 km s , high velocity ( km s ) filaments , and a very high velocity ( km s ) clo... | we report here the results of deep optical spectroscopy of the very extended emission - line region ( veelr ) found serendipitously around the seyfert 2 galaxy ngc 4388 in the virgo cluster using the subaru telescope . the h recession velocities of most of the filaments of the region observed are highly blue - shifted... |
astro-ph0310044 | i | using the subaru telescope , we carried out deep optical spectroscopic observations of the very extended emission - line region ( veelr ) found around the seyfert 2 galaxy ngc 4388 in the virgo cluster . the h@xmath0 recession velocities of most of the filaments in the veelr are highly blue - shifted relative to the sy... | we report here the results of deep optical spectroscopy of the very extended emission - line region ( veelr ) found serendipitously around the seyfert 2 galaxy ngc 4388 in the virgo cluster using the subaru telescope . the h recession velocities of most of the filaments of the region observed are highly blue - shifted... | we report here the results of deep optical spectroscopy of the very extended emission - line region ( veelr ) found serendipitously around the seyfert 2 galaxy ngc 4388 in the virgo cluster using the subaru telescope . the h recession velocities of most of the filaments of the region observed are highly blue - shifted... |
1103.4370 | c | magnetically regulated models predict that a yso will be surrounded by a pseudo - disk a few thousand au in size , and that the pseudo - disk symmetry axis will be aligned or nearly so with that of the yso bipolar outflow . in this sub - section we will explore the extent to which this is the case for our three sources... | the models also predict a magnetic field pinch structure on a scale less than or comparable to the infall radii for these sources . in addition , if the core magnetic field aligns ( or nearly aligns ) the core rotation axis with the magnetic field before core collapse , then the models predict the alignment ( or near a... | we report new 350 m polarization observations of the thermal dust emission from the cores surrounding the low - mass , class 0 ysos l1527 , ic348-smm2 and b335 . we have inferred magnetic field directions from these observations , and have used them together with results in the literature to determine whether magnetica... |
1004.1064 | i | spherically symmetric potentials have become a well - established paradigm of colloidal science in past decades . @xcite this is because , at a sufficiently coarse - grained level , colloidal surface composition can be regarded as uniform with a good degree of confidence , so that relevant interactions depend only on r... | we report on a computer simulation and integral equation study of a simple model of patchy spheres , each of whose surfaces is decorated with two opposite attractive caps , as a function of the fraction of covered attractive surface . finally , we show that the stable ordered phase evolves on decreasing from a three - ... | we report on a computer simulation and integral equation study of a simple model of patchy spheres , each of whose surfaces is decorated with two opposite attractive caps , as a function of the fraction of covered attractive surface . the simple model explored the two - patch kern - frenkel model interpolates between... |
1004.1064 | r | figure [ fig : fig9 ] shows the critical parameters for the case of particles with one and two patches , both reported as a function of the total coverage . here only mc results are reported in view of their precision and reliability . the @xmath29 limit corresponds to the sw case and coincides for both models . an an... | the simple model explored the two - patch kern - frenkel model interpolates between a square - well and a hard - sphere potential on changing the coverage . we show that integral equation theory provides quantitative predictions in the entire explored region of temperatures and densities from the square - well limit ... | we report on a computer simulation and integral equation study of a simple model of patchy spheres , each of whose surfaces is decorated with two opposite attractive caps , as a function of the fraction of covered attractive surface . the simple model explored the two - patch kern - frenkel model interpolates between... |
hep-lat0110159 | r | we have tested the lanl method using the ukqcd quenched data set . the simulation details are given in table [ sim ] and discussed in the appendix . the best analysis was possible at @xmath63 . to implement the lanl method we first fix @xmath46 . figure [ fexp1 ] shows the fractional contribution of the ground s... | we find we are able to extract reliable estimates for the coefficient using this method . however , our study of systematic errors shows that for very accurate determinations of , the smearing function must be tuned and the volume fixed to keep the ambiguity in fixed as varies . consistency was found with previous resu... | we report on an investigation of the lanl method for determining the improvement coefficient nonperturbatively . we find we are able to extract reliable estimates for the coefficient using this method . however , our study of systematic errors shows that for very accurate determinations of , the smearing function must ... |
1609.08620 | i | metallic spin - density wave ( sdw ) transitions are ubiquitous to strongly correlated materials such as the electron - doped cuprates @xcite , the fe - based superconductors @xcite , heavy fermion systems @xcite , and organic superconductors @xcite . in all these materials , unconventional superconductivity is fou... | we report on numerically exact determinantal quantum monte carlo simulations of the onset of spin - density wave ( sdw ) order in itinerant electron systems captured by a sign - problem - free two - dimensional lattice model . this indicates a clear breakdown of fermi liquid theory around these points . | we report on numerically exact determinantal quantum monte carlo simulations of the onset of spin - density wave ( sdw ) order in itinerant electron systems captured by a sign - problem - free two - dimensional lattice model . extensive measurements of the sdw correlations in the vicinity of the phase transition reveal... |
0710.5087 | i | we have carried out a spectroscopic study of the central 2 arcminutes of centaurus a using short low and long high spectral modules of the infrared spectrograph on board the _ spitzer space telescope_. most of the emission lines detected in the spectral cubes ( e.g. , [ siii](33.5@xmath0 m ) , [ siii](34.8 ) , [ feii](... | we report on the results of spectroscopic mapping observations carried out in the nuclear region of centaurus a ( ngc5128 ) over the 5.2 - 15 and 20 - 36 m spectral regions using the infrared spectrograph on the _ spitzer space telescope_. we have detected and mapped s(0 ) , s(2 ) , s(3 ) , and s(5 ) pure rotational tr... | we report on the results of spectroscopic mapping observations carried out in the nuclear region of centaurus a ( ngc5128 ) over the 5.2 - 15 and 20 - 36 m spectral regions using the infrared spectrograph on the _ spitzer space telescope_. we have detected and mapped s(0 ) , s(2 ) , s(3 ) , and s(5 ) pure rotational tr... |
1010.1008 | i | transiting exoplanets ( teps ) are tremendously useful objects for studying the properties of planets outside of the solar system because their photometric transits , combined with precise measurements of the radial velocity variations of their host stars , enable determinations of their masses and radii . of the @xmat... | we report the discovery of hat - p-26b , a transiting extrasolar planet orbiting the moderately bright v=11.744 k1 dwarf star gsc 0320 - 01027 , with a periodd , transit epoch ( bjd ) , and transit durationd . it has a mass that is comparable to those of neptune and uranus , and slightly smaller than those of the ot... | we report the discovery of hat - p-26b , a transiting extrasolar planet orbiting the moderately bright v=11.744 k1 dwarf star gsc 0320 - 01027 , with a periodd , transit epoch ( bjd ) , and transit durationd . the host star has a mass of , radius of , effective temperature k , and metallicity}}= { \ifthenelse{\equal... |
1010.1008 | c | we have presented the discovery of hat - p-26b , a transiting neptune - mass planet . below we discuss the physical properties of this planet , and compare them to the properties of similar planets ; we comment on the possibility that the planet has undergone significant evaporation , on the significance of its orbital... | hat - p-26b is the fourth neptune - mass transiting planet discovered to date . hat - p-26b is consistent with theoretical models of an irradiated neptune - mass planet with a 10 heavy element core that comprises of its mass with the remainder contained in a significant hydrogen - helium envelope , though the exact co... | we report the discovery of hat - p-26b , a transiting extrasolar planet orbiting the moderately bright v=11.744 k1 dwarf star gsc 0320 - 01027 , with a periodd , transit epoch ( bjd ) , and transit durationd . the host star has a mass of , radius of , effective temperature k , and metallicity}}= { \ifthenelse{\equal... |
1008.3985 | r | the spectroscopic properties of sn 2005hk have already been described in some detail in other works @xcite . here the prominent spectroscopic features , which characterise sn 2005hk at the epochs at which spectropolarimetry was acquired , will be briefly reviewed to orient the reader . the flux spectra from our two s... | epochs the data corresponds to the spectropolarimetric type d1 . the general low level of line polarization suggests that the line forming regions for most species observed in the spectrum have a similar shape to that of the photosphere , which deviates from a spherical symmetry by . in comparison with spectropolarimet... | we report two spectropolarimetric observations of sn 2005hk , which is a close copy of the very peculiar " sn 2002cx , showing low peak luminosity , slow decline , high ionization near peak and an unusually low expansion velocity of only about 7,000 . further to the data presented by chornock et al . , ( 2006 ) , at... |
1008.3985 | c | the class of sne similar to sn 2002cx currently has 15 members , including 2005hk and 2008 ha @xcite . as discussed in detail by @xcite and @xcite , both sn 2002cx and sn 2005hk were of especially low velocity at the photosphere near maximum light , @xmath130 @xmath0 , had early relatively high ionization , and low ... | we report two spectropolarimetric observations of sn 2005hk , which is a close copy of the very peculiar " sn 2002cx , showing low peak luminosity , slow decline , high ionization near peak and an unusually low expansion velocity of only about 7,000 . we discuss the possibility that sn 2005hk was the result of the ... | we report two spectropolarimetric observations of sn 2005hk , which is a close copy of the very peculiar " sn 2002cx , showing low peak luminosity , slow decline , high ionization near peak and an unusually low expansion velocity of only about 7,000 . further to the data presented by chornock et al . , ( 2006 ) , at... |
1008.3985 | c | sn 2005hk has been observed at two epochs , corresponding to maximum light and two weeks after maximum . after subtraction of the isp component , the sn is observed to have a very low to null intrinsic polarization . a modulation in the stokes parameters is observed across the @xmath22 line being the most significant ... | , ( 2006 ) , at -4 days before maximum , we present data of this object taken on 9 november 2005 ( near maximum ) and 23 november ( + two weeks ) that show the continuum and most of the spectral lines to be polarized at levels of about 0.2 - 0.3% . at both | we report two spectropolarimetric observations of sn 2005hk , which is a close copy of the very peculiar " sn 2002cx , showing low peak luminosity , slow decline , high ionization near peak and an unusually low expansion velocity of only about 7,000 . further to the data presented by chornock et al . , ( 2006 ) , at... |
quant-ph0501056 | i | many problems of interest in quantum computing can be reduced to an instance of the _ hidden subgroup problem _ ( hsp ) . we are given a group @xmath0 and a function @xmath1 with the promise that , for some subgroup @xmath2 , @xmath1 is invariant precisely under translation by @xmath3 : that is , @xmath1 is constant on... | we resolve the question of whether fourier sampling can efficiently solve the hidden subgroup problem . specifically , we show that the hidden subgroup problem over the symmetric group can not be efficiently solved by strong fourier sampling , even if one may perform an arbitrary povm on the coset state . these results... | we resolve the question of whether fourier sampling can efficiently solve the hidden subgroup problem . specifically , we show that the hidden subgroup problem over the symmetric group can not be efficiently solved by strong fourier sampling , even if one may perform an arbitrary povm on the coset state . these results... |
astro-ph0302434 | i | knowledge of physical conditions ( @xmath1 and @xmath2 ) is an essential ingredient in the understanding of planetary nebulae . information on the structure , chemistry and kinematics of these objects comes from individual diagnostics and from the cross - comparison of different diagnostics . in this work , two differe... | we revise the physical conditions in the o zone of the planetary nebula ngc 6543 , obtaining two different estimates of the electron temperature ( ) and one estimate of the electron density ( ) . the electron temperature is computed by means of two independent methods , the nebular - to - auroral ratio [ o iii ]/ , an... | we revise the physical conditions in the o zone of the planetary nebula ngc 6543 , obtaining two different estimates of the electron temperature ( ) and one estimate of the electron density ( ) . the electron temperature is computed by means of two independent methods , the nebular - to - auroral ratio [ o iii ]/ , an... |
1106.5548 | i | ever since acoustic peaks were detected in the cosmic microwave background @xcite and galaxy surveys @xcite , much effort has been devoted to use baryon acoustic oscillations ( bao ) as standard rulers to estimate cosmological distances with precision @xcite . bao signals are manifested as a wiggly feature in the matte... | we revisit the uncertainty in baryon acoustic oscillation ( bao ) forecasts and data analyses . in particular , we study how much the uncertainties on both the measured mean dilation scale and the associated error bar are affected by the non - gaussianity of the non - linear density field . we examine two possible impa... | we revisit the uncertainty in baryon acoustic oscillation ( bao ) forecasts and data analyses . in particular , we study how much the uncertainties on both the measured mean dilation scale and the associated error bar are affected by the non - gaussianity of the non - linear density field . we examine two possible impa... |
1106.5548 | c | we have addressed some aspects of the problem of measuring non - gaussian error bars in a bao analysis . we have investigated the full optimal quadratic non - gaussian estimator on reconstructed density field , and quantified the significance of the non - gaussianities on the bao dilation scale error . a major subtlety... | we find that the variance ( error squared ) on distance measurements can deviate by up to 12% between both estimators , an effect that requires a large number of simulations to be resolved . we next apply a reconstruction algorithm to recover some of the bao signal that had been smeared by non - linear evolution , and ... | we revisit the uncertainty in baryon acoustic oscillation ( bao ) forecasts and data analyses . in particular , we study how much the uncertainties on both the measured mean dilation scale and the associated error bar are affected by the non - gaussianity of the non - linear density field . we examine two possible impa... |
math0210397 | i | one of the main mechanisms of integrability of evolution equations is the presence of two compatible hamiltonian structures . in this paper we compare hamiltonian properties of three extensively studied nonlinear equations of mathematical physics , related to various hydrodynamical approximations : the korteweg - de vr... | we show that the following three systems related to various hydrodynamical approximations : the korteweg de vries equation , the camassa holm equation , and the hunter saxton equation , have the same symmetry group and similar bihamiltonian structures . it turns out that their configuration space is the virasoro gro... | we show that the following three systems related to various hydrodynamical approximations : the korteweg de vries equation , the camassa holm equation , and the hunter saxton equation , have the same symmetry group and similar bihamiltonian structures . it turns out that their configuration space is the virasoro gro... |
1603.08455 | i | riemannian manifolds all of whose geodesics are closed have been studied since the beginning of the @xmath0th century , when the first nontrivial examples were constructed by tannery and zoll . the famous book of besse @xcite still describes the state of knowledge of the subject to a large extent . some notable excepti... | we show that the geodesic period spectrum of a riemannian 2-orbifold all of whose geodesics are closed depends , up to a constant , only on its orbifold topology and compute it . in the manifold case we recover the fact proved by gromoll , grove and pries that all prime geodesics have the same length . in the appendix ... | we show that the geodesic period spectrum of a riemannian 2-orbifold all of whose geodesics are closed depends , up to a constant , only on its orbifold topology and compute it . in the manifold case we recover the fact proved by gromoll , grove and pries that all prime geodesics have the same length . in the appendix ... |
1403.7469 | i | the study of out - of - equilibrium dynamics of isolated many - body quantum systems has seen great progress during the last decade . in particular , much theoretical progress was made in the field of one - dimensional quantum integrable models . out - of - equilibrium realizations of these models , despite being stron... | we specialize a recently - proposed determinant formula for the overlap of the zero - momentum nel state with bethe states of the spin-1/2 xxz chain to the case of an odd number of downturned spins , showing that it is still of `` gaudin - like '' form , similar to the case of an even number of down spins . the general... | we specialize a recently - proposed determinant formula for the overlap of the zero - momentum nel state with bethe states of the spin-1/2 xxz chain to the case of an odd number of downturned spins , showing that it is still of `` gaudin - like '' form , similar to the case of an even number of down spins . we generali... |
1411.2948 | c | in this paper we have analysed the evolution of a quantum field in @xmath224 dimensions under time - dependent robin boundary conditions that occur in superconducting microwave circuit experiments in the high plasma frequency limit . we solved the evolution explicitly to linear order in the time variation of the robin ... | we study analytically the time - dependent boundary conditions of superconducting microwave circuit experiments in the high plasma frequency limit , in which the conditions are robin - type and relate the value of the field to the spatial derivative of the field . the correspondence between the microwave robin boundary... | we study analytically the time - dependent boundary conditions of superconducting microwave circuit experiments in the high plasma frequency limit , in which the conditions are robin - type and relate the value of the field to the spatial derivative of the field . we give an explicit solution to the field evolution for... |
quant-ph0306078 | i | entanglement and secret correlation share an `` exclusiveness '' in the one case towards the total outside world , in the other towards an entity `` eve '' that has led quantum information scientists to speculate on a systematic relation between their theories : the works in this direction range from building analogi... | we study and solve the problem of distilling secret key from quantum states representing correlation between two parties ( alice and bob ) and an eavesdropper ( eve ) via one way public discussion : we prove a coding theorem to achieve the `` wire tapper '' bound , the difference of the mutual information alice bob ... | we study and solve the problem of distilling secret key from quantum states representing correlation between two parties ( alice and bob ) and an eavesdropper ( eve ) via one way public discussion : we prove a coding theorem to achieve the `` wire tapper '' bound , the difference of the mutual information alice bob ... |
1203.2010 | i | ballistic electron transport @xcite in two - terminal graphene systems is in the focus of intensive studies ever since the pioneering experiments on single - layer carbon . @xcite the dirac hamiltonian @xcite describes charge transport close to the charge - neutrality point and leads to a linear dispersion relation @... | we study finite - frequency quantum noise and photon - assisted electron transport through a wide and ballistic graphene sheet sandwiched between two metallic leads . we identify different features in the current - current auto- and cross - correlation spectra and trace them back to the interference patterns of the pro... | we study finite - frequency quantum noise and photon - assisted electron transport through a wide and ballistic graphene sheet sandwiched between two metallic leads . the elementary excitations allow as to examine the differences between effects related to fabry - prot like interferences and signatures caused by correl... |
hep-th0206206 | i | let @xmath1 be a surface obtained by blowing up nine base points of two generic cubics in @xmath2 . @xmath1 has an elliptic fibration @xmath3 and , in this note , we call it rational elliptic surface or @xmath4k3 . ( the latter name comes from the fact that @xmath1 has 12 singular fibers of kodaira @xmath5 type while a... | we study gromov - witten invariants of a rational elliptic surface using holomorphic anomaly equation in [ hst1 ] . formulating invariance under the affine weyl group symmetry , we determine conjectured invariants , the number of bps states , from gromov - witten invariants . we also connect our holomorphic anomaly equ... | we study gromov - witten invariants of a rational elliptic surface using holomorphic anomaly equation in [ hst1 ] . formulating invariance under the affine weyl group symmetry , we determine conjectured invariants , the number of bps states , from gromov - witten invariants . we also connect our holomorphic anomaly equ... |
0910.2348 | i | the fact that compact conformations of polymers are principal configurations of the native states of globular proteins makes them an important subset of all the physically accessible conformations . since compact conformations occupy space as densely as possible , one of the simplest ways to model them is to use hamilt... | each member of this fractal family is labeled with an integer . in contrast to that , the stretched exponential term depends on the type of hw through constant , whereas exponent is determined by alone . for larger values , using some general features of the applied recursive relations , without explicit enumeration of... | we study hamiltonian walks ( hws ) on the family of three dimensional modified sierpinski gasket fractals , as a model for compact polymers in nonhomogeneous media in three dimensions . each member of this fractal family is labeled with an integer . we apply an exact recursive method which allows for explicit enumerat... |
0910.2348 | i | in this paper we have analyzed asymptotic behavior of the numbers of open and closed hamiltonian walks on three - dimensional modified sierpinski gasket family of fractals . numbers of extremely long hws on these lattices can be generated by applying an exact recursive enumeration scheme , based on the fact that any hw... | we study hamiltonian walks ( hws ) on the family of three dimensional modified sierpinski gasket fractals , as a model for compact polymers in nonhomogeneous media in three dimensions . _ keywords _ : solvable lattice models ; polymers , copolymers , polyelectrolytes and biomolecular solutions ; structures and conform... | we study hamiltonian walks ( hws ) on the family of three dimensional modified sierpinski gasket fractals , as a model for compact polymers in nonhomogeneous media in three dimensions . each member of this fractal family is labeled with an integer . we apply an exact recursive method which allows for explicit enumerat... |
nucl-th9408009 | i | the electromagnetic production of electron - positron pairs in relativistic heavy ion collisions has gained some interest recently due to the observation that the total probability violates unitarity if calculated in lowest order even for realistic energies and impact parameters as large as the compton wavelength @xcit... | we study higher - order effects in the electromagnetic production of electron - positron pairs in relativistic heavy ion collisions . treating the field of the heavy ions as an external field and neglecting the interaction among electrons and positrons , we show that the-pair creation amplitude is the antisymmetrised p... | we study higher - order effects in the electromagnetic production of electron - positron pairs in relativistic heavy ion collisions . treating the field of the heavy ions as an external field and neglecting the interaction among electrons and positrons , we show that the-pair creation amplitude is the antisymmetrised p... |
1109.1389 | i | in a previous paper @xcite we studied moduli spaces of holomorphic discs in certain @xmath0-dimensional symplectic cobordisms . as in the classical work of hofer @xcite on the weinstein conjecture in dimension @xmath1 , the non - compactness of these moduli spaces was used to detect periodic reeb orbits . moreover ,... | we study holomorphic spheres in certain symplectic cobordisms and derive information about periodic reeb orbits in the concave end of these cobordisms from the non - compactness of the relevant moduli spaces . we use this to confirm the strong weinstein conjecture ( predicting the existence of null - homologous reeb li... | we study holomorphic spheres in certain symplectic cobordisms and derive information about periodic reeb orbits in the concave end of these cobordisms from the non - compactness of the relevant moduli spaces . we use this to confirm the strong weinstein conjecture ( predicting the existence of null - homologous reeb li... |
1602.08544 | i | the classical gauss problem of minimizing the coulomb energy to solve the problem of thomson and its generalization to riesz potentials together with the discretization is the basic problem of many applications ( in @xcite are listed coding theory , cubature formulas , tight frames and packing problems ) . in the works... | , we are motivated to formulate the natural regularization of such minimization problems by switching to hadamard s partie finie integral operator which defines a strongly elliptic pseudodifferential operator of order on . the measures with finite energy are shown to be elements from the sobolev space , , and the corre... | we study minimal energy problems for strongly singular riesz kernels , where and , considered for compact-dimensional-manifolds immersed into . based on the spatial energy of harmonic double layer potentials , we are motivated to formulate the natural regularization of such minimization problems by switching to hadamar... |
1701.05714 | i | a homogeneous magnetic field acting on charged particles has a localizing effect , both classically and quantum mechanically . since numerous physical effects are based on moving electrons between different places , mechanism that can produce transport in the presence of a magnetic field are of great interest . they ty... | we study motion of a charged particle confined to dirichlet layer of a fixed width placed into a homogeneous magnetic field . if the layer is planar and the field is perpendicular to it the spectrum consists of infinitely degenerate eigenvalues . we consider translationally invariant geometric perturbations and derive ... | we study motion of a charged particle confined to dirichlet layer of a fixed width placed into a homogeneous magnetic field . if the layer is planar and the field is perpendicular to it the spectrum consists of infinitely degenerate eigenvalues . we consider translationally invariant geometric perturbations and derive ... |
0901.2506 | i | a ternary algebra or triple system is a vector space @xmath1 endowed with a ternary law of composition @xmath2 which is a linear mapping with respect to each its argument , and we will call this mapping a ternary multiplication or triple product of a ternary algebra @xmath1 . hence a ternary algebra is an algebra which... | we study partially and totally associative ternary algebras of first and second kind . assuming the vector space underlying a ternary algebra to be a topological space and a triple product to be continuous mapping we consider the trivial vector bundle over a ternary algebra and show that a triple product induces a stru... | we study partially and totally associative ternary algebras of first and second kind . assuming the vector space underlying a ternary algebra to be a topological space and a triple product to be continuous mapping we consider the trivial vector bundle over a ternary algebra and show that a triple product induces a stru... |
math0407521 | i | the jones polynomial was discovered by jones in 1984 @xcite and has made a revolution in knot theory . despite many efforts little is known about the relationship between the jones polynomial and classical topology invariants like the fundamental group . the @xmath0-polynomial of a knot , introduced in @xcite , describ... | we study relationships between the colored jones polynomial and the a - polynomial of a knot . the aj conjecture ( of garoufalidis ) that relates the colored jones polynomial and the a - polynomial is established for a large class of two - bridge knots , including all twist knots . we formulate a weaker conjecture and ... | we study relationships between the colored jones polynomial and the a - polynomial of a knot . the aj conjecture ( of garoufalidis ) that relates the colored jones polynomial and the a - polynomial is established for a large class of two - bridge knots , including all twist knots . we formulate a weaker conjecture and ... |
1605.02058 | i | we have studied the scalar , electromagnetic , axial and polar gravitational perturbations of the reissner - nordstrm black hole ( with tidal charge instead of electric charge ) in the randall - sundrum braneworld . by using the sixth order wkb method , we have calculated the quasinormal frequencies of these perturbati... | we study scalar , electromagnetic , axial and polar gravitational perturbations of the four - dimensional reissner - nordstrm - like black holes with a _ tidal charge _ in the randall - sundrum braneworld in the first approximation when the tidal perturbations are not taken into account . calculations have shown that t... | we study scalar , electromagnetic , axial and polar gravitational perturbations of the four - dimensional reissner - nordstrm - like black holes with a _ tidal charge _ in the randall - sundrum braneworld in the first approximation when the tidal perturbations are not taken into account . the quasinormal modes of these... |
math0010282 | i | to understand the structure of @xmath0-manifolds and links inside them , the first author introduced the concept of the skein module @xcite motivated by the conway idea of linear skein " . skein modules are quotients of a free module of formal linear combinations of links in a @xmath0-manifold by properly chosen ( loc... | we study the concept of the fourth skein module of-manifolds , that is a skein module based on the skein relation and a framing relation ( , , invertible ) . we investigate the behavior of elements of the skein module under the-move and compute the values for-torus links and twist knots as elements of the skein module ... | we study the concept of the fourth skein module of-manifolds , that is a skein module based on the skein relation and a framing relation ( , , invertible ) . we give necessary conditions for trivial links to be linearly independent in the module . we investigate the behavior of elements of the skein module under the-mo... |
astro-ph9510123 | i | it is well known that a superstrong magnetic field of order @xmath5 gauss , typically found on the surfaces of neutron stars , can dramatically change the structure of neutral atoms and other bound states ( see , e.g. , ref.@xcite for an early review and ref.@xcite for a recent text on atoms in strong magnetic fields )... | field strengths of order gauss are typically found on the surfaces of neutron stars , but we also study the regime gauss , where the landau excitation energy of the proton is large . the final results for the excitation energies are given in the form of analytical fitting formulae . | we study the effects of finite proton mass on the energy levels of hydrogen atoms moving transverse to a superstrong magnetic field with generalized pseudomomentum . field strengths of order gauss are typically found on the surfaces of neutron stars , but we also study the regime gauss , where the landau excitation ene... |
astro-ph9510123 | i | the effects of center - of - mass motion of neutral hydrogen atom in a strong magnetic field are rather intricate , mainly due to the high degree of degeneracy associated with the quantum states . using the usual pseudomomentum scheme ( sec . ii - iii ) , we have obtained approximate solutions for the energy of the ato... | we study the effects of finite proton mass on the energy levels of hydrogen atoms moving transverse to a superstrong magnetic field with generalized pseudomomentum . we adopt two different approaches to the two - body problem in strong magnetic field , and obtain an approximate , but complete solution of the atomic ene... | we study the effects of finite proton mass on the energy levels of hydrogen atoms moving transverse to a superstrong magnetic field with generalized pseudomomentum . field strengths of order gauss are typically found on the surfaces of neutron stars , but we also study the regime gauss , where the landau excitation ene... |
1004.2289 | i | a novel quantum gravity model , which claims power - counting renormalizability , has been formulated recently by horava @xcite . this scenario is based on an anisotropy between space and time coordinates , which is expressed via the scalings @xmath11 and @xmath12 , where @xmath13 is a dynamical critical exponent . f... | we study the full spectrum of spherically symmetric solutions in the five dimensional non - projectable horava - lifshitz type gravity theories . in addition we have found solutions with an unconventional short or large distance behaviour , and for a special range of the coupling parameters solutions which coincide wit... | we study the full spectrum of spherically symmetric solutions in the five dimensional non - projectable horava - lifshitz type gravity theories . for appropriate ranges of the coupling parameters , we have found several classes of solutions which are characterized by an , or flat large distance asymptotic behaviour , p... |
1004.2289 | i | in this section we present same mathematical details for the derivation of formulae of eqs . ( [ gcy1 ] ) and ( [ gcy2 ] ) . in particular we have to integrate eq . ( [ genericeqz ] ) @xmath250 in order to perform the above integral we make the replacement @xmath251 , then we obtain @xmath252 where a=-3 _ 0a + , b=(... | + * george koutsoumbas * , * eletherios papantonopoulos * , * pavlos pasipoularides * , * minas tsoukalas * + department of physics , national technical university of athens , + zografou campus gr 157 73 , athens , greece + e - mail address : kutsubas@central.ntua.gr + e - mail address : lpapa@cetral.ntua.gr + e ... | we study the full spectrum of spherically symmetric solutions in the five dimensional non - projectable horava - lifshitz type gravity theories . for appropriate ranges of the coupling parameters , we have found several classes of solutions which are characterized by an , or flat large distance asymptotic behaviour , p... |
1503.06640 | i | a notion at the very core of graph theory , chordality is a statement about the geometry and complexity of cycles in a graph , stating in essence that a cycle is decomposable in the most economic way imaginable . the relation of graph chordality to commutative algebra in particular has motivated many to attempt a gener... | we study the geometric change of chow cohomology classes in projective toric varieties under the weil - mcmullen dual of the intersection product with a lefschetz element . based on this , we introduce toric chordality , a generalization of graph chordality to higher skeleta of simplicial complexes with a coordinatizat... | we study the geometric change of chow cohomology classes in projective toric varieties under the weil - mcmullen dual of the intersection product with a lefschetz element . based on this , we introduce toric chordality , a generalization of graph chordality to higher skeleta of simplicial complexes with a coordinatizat... |
1406.7647 | i | low energy dynamics of field theories can be described by only light fields such as nambu - goldstone modes when one integrates out massive modes . the low - energy effective theories are usually expanded by derivative expansions ; thereby , they inevitably contain higher derivative terms of fields . chiral perturbatio... | we point out that the model admits a supersymmetric completion of arbitrary higher derivative bosonic models of a single complex scalar field and an arbitrary scalar potential can be introduced even without superpotentials . as an example , we present a supersymmetric extension of the faddeev - skyrme model without fou... | we study the higher derivative chiral models with four supercharges and bogomolnyi - prasad - sommerfield ( bps ) states in these models . the off - shell lagrangian generically includes higher powers of the auxiliary fields which causes distinct on - shell branches associated with the solutions to the auxiliary fields... |
hep-ph0602140 | i | some puzzles have been found in @xmath1 meson decaying processes , such as ( a ) the large branching ratios ( brs ) of @xmath12 @xcite , ( b ) the small longitudinal polarizations of @xmath2 decays @xcite and ( c ) the unmatched cp asymmetries ( cpas ) and brs in @xmath6 decays @xcite . the interesting thing is that th... | we study the impacts of nonuniversal model , providing flavor changing neutral current at tree level , on the branching ratios ( brs ) , cp asymmetries ( cpas ) and polarization fractions of decays . the new introduced effective interactions not only could effectively explain the puzzle of small longitudinal polarizati... | we study the impacts of nonuniversal model , providing flavor changing neutral current at tree level , on the branching ratios ( brs ) , cp asymmetries ( cpas ) and polarization fractions of decays . we find that for satisfying the current data , the new left- and right - handed couplings have to be included at the sam... |
hep-ph0602140 | i | we have studied the effects of nonuniversal @xmath0 model on the processes dictated by the @xmath98 decays with @xmath117 , d , and s. by using the pqcd approach , we calculate the needed hadronic matrix elements . for @xmath19 decays , we find that their brs and the @xmath264 of @xmath371 have provided strict constrai... | we find that for satisfying the current data , the new left- and right - handed couplings have to be included at the same time . we also find that the favorable cpa of is opposite in sign to the standard model ; meanwhile , the cpa of has to be smaller than . | we study the impacts of nonuniversal model , providing flavor changing neutral current at tree level , on the branching ratios ( brs ) , cp asymmetries ( cpas ) and polarization fractions of decays . we find that for satisfying the current data , the new left- and right - handed couplings have to be included at the sam... |
0710.1363 | i | in this paper we present the qualitative and quantitative analysis of the influence of imperfect structure of a crystalline undulator ( in particular , the influence of the variation of the bending amplitude over the crystal thickness due to the stress applied to its surface ) on the spectral distribution of the radiat... | we study the influence of an imperfect structure of a crystalline undulator on the spectrum of the undulator radiation . we demonstrate that this method of preparation of a crystalline undulator inevitably leads to a variation of the bending amplitude over the crystal thickness and to the presence of the subharmonics w... | we study the influence of an imperfect structure of a crystalline undulator on the spectrum of the undulator radiation . the main attention is paid to the undulators in which the periodic bending in the bulk appears as a result of a regular ( periodic ) surface deformations . we demonstrate that this method of preparat... |
cond-mat9811052 | i | how a liquid freezes to form a solid is a problem of longstanding interest to physicists . freezing at thermal equilibrium can now be said to be quite well understood in terms of a first - principles order - parameter theory @xcite . the effect of steady nonequilibrium driving on the freezing transition has been studie... | we study the liquid - solid transition in a collection of interacting particles moving through a dissipative medium under the action of a constant , spatially uniform external force , e.g. a charge - stabilized suspension in a fluidized bed or a flux - point lattice moving through a thin , current - carrying slab of ty... | we study the liquid - solid transition in a collection of interacting particles moving through a dissipative medium under the action of a constant , spatially uniform external force , e.g. a charge - stabilized suspension in a fluidized bed or a flux - point lattice moving through a thin , current - carrying slab of ty... |
1601.06591 | i | countable markov maps , that is , interval maps with countably many expanding branches , have received much attention over the past several years . they appear in particular in diophantine approximation in the study of approximation rates of irrationals by rational numbers . the key examples here are the _ gauss map _ ... | we study the pointwise perturbations of countable markov maps with infinitely many inverse branches and establish the following continuity theorem : let and be expanding countable markov maps such that the inverse branches of converge pointwise to the inverse branches of as . then under suitable regularity assumptions ... | we study the pointwise perturbations of countable markov maps with infinitely many inverse branches and establish the following continuity theorem : let and be expanding countable markov maps such that the inverse branches of converge pointwise to the inverse branches of as . then under suitable regularity assumptions ... |
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