id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
astro-ph/9311049 | Effects of Diurnal Modulation in Direct Cold Dark Matter Searches. the
Experiment in Sierra Grande | Contains a summary, current status and prospects for the direct detection of
cold dark matter using diurnal modulation effects as presented at the ELAF 93,
Mar del Plata Argentina. The potential advantages of using the Earth as an
absorber to produce diurnal modulation effects in cold dark matter searches are
given alo... | 1993-11-18 | 2007-05-23 | [
"astro-ph"
] | D.E. Di Gregorio, A. Gattone, H. Huck, A.O. Macchiavelli, S. Gil, J.
Collar and F.T. Avignone III |
astro-ph/9311048 | Cosmic ray ionization of the interstellar medium | We consider a cosmic ray spectrum that is a power law in momentum down to a
cutoff and derive a lower cutoff corresponding to $E_{kin} \sim (30-60)$ MeV
from the observed ionization rates in nearby diffuse clouds. While the real
spectra of cosmic rays may not be so simple, we argue that one expects a
substantial change... | 1993-11-18 | 2015-06-24 | [
"astro-ph"
] | Biman B. Nath and Peter L. Biermann |
astro-ph/9311040 | Microwave Anisotropies from Texture Seeded Structure Formation | The cosmic microwave anisotropies in a scenario of large scale structure
formation with cold dark matter and texture are discussed and compared with
recent observational results of the COBE satellite. A couple of important
statistical parameters are determined. The fluctuations are slightly non
gaussian. The quadrupole... | 1993-11-17 | 2008-11-26 | [
"astro-ph"
] | R.Durrer, A. Howard, Z.-H. Zhou |
astro-ph/9311042 | Dynamics of Clusters of Galaxies | The abundance and internal characteristics of rich clusters of galaxies can
provide useful constraints on models of large--scale structure formation. This
article will review some recent three dimensional, multi--fluid simulations of
cluster dynamics and discuss their impact on issues raised from optical and
X-ray obse... | 1993-11-17 | 2007-05-23 | [
"astro-ph"
] | August E. Evrard |
astro-ph/9311039 | Early Reionization in Cosmology | The cosmic microwave background (CMB) anisotropies have turned out to
represent one of the most stringent 'bottle necks' for scenarios of large scale
structure formation. As a possibility to relax this constraint, it has been
proposed that early reionization can damp CMB fluctuations on small scales due
to photon diffu... | 1993-11-17 | 2009-10-22 | [
"astro-ph"
] | Ruth Durrer |
astro-ph/9311041 | Gauge Invariant Cosmological Perturbation Theory | After an introduction to the problem of cosmological structure formation, we
develop gauge invariant cosmological perturbation theory. We derive the first
order perturbation equations of Einstein's equations and energy momentum
``conservation''. Furthermore, the perturbations of Liouville's equation for
collisionless p... | 1993-11-17 | 2010-12-09 | [
"astro-ph"
] | Ruth Durrer |
astro-ph/9311038 | The Apm Galaxy Survey IV: Redshifts of Rich Clusters of Galaxies | We present redshifts for a sample of 229 clusters selected from the APM
Galaxy Survey, 189 of which are new redshift determinations. Non-cluster galaxy
redshifts have been rejected from this sample using a likelihood ratio test
based on the projected and apparent magnitude distributions of the cluster
fields. We test t... | 1993-11-16 | 2015-06-24 | [
"astro-ph"
] | G.B. Dalton (Oxford), G. Efstathiou (Oxford), S.J. Maddox (RGO), and
W.J. Sutherland (Berkeley) |
astro-ph/9311031 | Modified-dynamics predictions agree with ovservations of the HI
kinematics in faint dwarf galaxies contrary to the conclusions of Lo Sargent
and Young | Lo, Sargent, and Young (1993) have recently concluded that the masses of some
dwarf galaxies, as deduced by the modified dynamics (MOND) from the observed
velocity dispersions, are systematically smaller than the observed masses, by a
factor of ten or more. We show here that the MOND mass estimator used by Lo et
al. is... | 1993-11-15 | 2009-10-22 | [
"astro-ph"
] | M. Milgrom |
astro-ph/9311036 | Pulsar Braking Index and Mass Accretion | I show that the braking index, $N$, a fundamental pulsar experimental
quantity, naturally differs from the canonical value of 3 by terms which
involve mass accretion. Using the measured values of $N$ for PSR1509-58 and
PSR0531+21, I determine that for constant density neutron stars their present
mass accretion rates ar... | 1993-11-15 | 2007-05-23 | [
"astro-ph"
] | P.D. Morley |
astro-ph/9311034 | The Stability of the Angular Two-Point Galaxy Correlation Function | In this paper, we investigate the effects of galactic extinction close to the
south galactic pole and plate--to--plate matching errors. These represent the
most probable systematic errors within the Edinburgh/Durham Southern Galaxy
Catalogue (EDSGC) which could affect the angular correlation function. The
distribution ... | 1993-11-15 | 2007-05-23 | [
"astro-ph"
] | Nichol & Collins |
astro-ph/9311033 | The Spatial Correlation Function from an X--ray Selected Sample of Abell
Clusters | We present here the Spatial Two--Point Correlation Function for a complete
sample of 67 X--ray selected Abell clusters of galaxies. We find a correlation
length of $16.1\pm3.4\mpc$ with no significant clustering beyond
$\simeq40\mpc$. This is the lowest uncorrected value for the correlation length
ever derived from the... | 1993-11-15 | 2015-06-24 | [
"astro-ph"
] | Nichol, Briel & Henry |
astro-ph/9311037 | Non-Linear Axion Dynamics and Formation of Cosmological Pseudo-Solitons | The $(3+1)$-dimensional evolution of an inhomogeneous axion field
configuration around the QCD epoch is studied numerically, including important
non-linear effects due to the attractive self-interaction. It is found that
axion perturbations on scales corresponding to causally disconnected regions at
$T \sim 1 \, {\rm G... | 1993-11-15 | 2011-07-19 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | Edward W. Kolb and Igor I. Tkachev |
astro-ph/9311035 | Gravitational Bending of Light with Frequency Shifts | Non-static gravitational fields generally introduce frequency shifts when
bending light. In this paper, I discuss the frequency shifts induced in the
bending of light by moving masses. As examples, I treat the recently discovered
high-velocity pulsar PSR 2224+65 and a typical Einstein ring. | 1993-11-15 | 2007-05-23 | [
"astro-ph"
] | P.D. Morley |
astro-ph/9311032 | Morphology of the Interstellar Cooling Lines Detected by COBE | The FIRAS instrument on the COBE satellite has conducted an unbiased survey
of the far-infrared emission from our Galaxy. The first results of this survey
were reported by Wright et al. (1991). We report the results of new analyses of
this spectral survey, which includes emission lines from 158 um C+, 122 um and
205 um... | 1993-11-15 | 2012-08-27 | [
"astro-ph"
] | C. L. Bennett, D. J. Fixsen, G. Hinshaw, J. C. Mather, S. H. Moseley,
E. L. Wright, R. E. Eplee, Jr., J. Gales, T. Hewagama, R. B. Isaacman, R. A.
Shafer & K. Turpie |
astro-ph/9311029 | Quantum Electrodynamics in the Gravitational Field of a Cosmic String | We evaluate the cross section for electron-positron pair production by a
single high energy photon in the space-time of a static, straight cosmic
string. Energy and momentum conservation precludes this process in empty
Minkowski space. It happens around a cosmic string, in spite of the local
flatness of the metric, as ... | 1993-11-12 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | Vladimir Skarzhinsky, Diego Harari and Ulf Jasper |
astro-ph/9311030 | Limits on Three-Point Correlations in the COBE-DMR First Year Anisotropy
Maps | We compute the three-point temperature correlation function of the {\it COBE}
Differential Microwave Radiometer (DMR) first-year sky maps to search for
non-Gaussian temperature fluctuations. The level of fluctuations seen in the
computed correlation function are too large to be attributable solely to
instrument noise. ... | 1993-11-12 | 2009-10-22 | [
"astro-ph"
] | G. Hinshaw, A. Kogut, K.M. Gorski, A.J. Banday, C.L. Bennett, C.
Lineweaver, P. Lubin, G.F. Smoot & E.L. Wright |
astro-ph/9311028 | Evolution of One-Point Distributions from Gaussian Initial Fluctuations | We study the quasilinear evolution of the one-point probability density
functions (PDFs) of the smoothed density and velocity fields in a cosmological
gravitating system beginning with Gaussian initial fluctuations. Our analytic
results are based on the Zel'dovich approximation and laminar flow. A numerical
analysis ex... | 1993-11-11 | 2009-10-22 | [
"astro-ph"
] | Lev Kofman (IFA, U of Hawaii, and CITA), Edmund Bertschinger (MIT),
James M. Gelb (MIT), Adi Nusser (CPA, Berkeley) and Avishai Dekel (Hebrew
University) |
astro-ph/9311027 | Cosmological Distribution Functions | The evolution of probability distribution functions (PDFs) of continuous
density, velocity and velocity derivatives ( deformation tensor) fields in the
theory of cosmological gravitational instability are considered. We show that
in the Newtonian theory the dynamical equations cannot be reduced to the closed
set of Lag... | 1993-11-11 | 2007-05-23 | [
"astro-ph"
] | Lev Kofman (Institute for Astronomy, University of Hawaii) |
astro-ph/9311026 | The X-Ray Background: Observations | Invited review talk given at the Meeting on "Extragalactic Background
Radiation: A meeting in honor of Riccardo Giacconi" Baltimore, May 18-20, 1993
Ro be published by Cambridge University Press | 1993-11-11 | 2007-05-23 | [
"astro-ph"
] | Giovanni Zamorani |
astro-ph/9311025 | On the Galactic Distribution of Gamma Ray Bursts | Quashnock and Lamb (1993) defined a sub-sample of Gamma-ray Bursts (GRBs)
from the publicly available BATSE database which shows clumping toward the
galactic plane, and concluded that all GRBs are galactic in origin. The
selection of these bursts (duplicated in this work in Sample 1) involved a peak
countrate (in count... | 1993-11-11 | 2016-06-08 | [
"astro-ph"
] | Robert E. Rutledge, Walter H.G. Lewin |
astro-ph/9311023 | Quasi-Linear Evolution of Compensated Cosmological Perturbations: The
Nonlinear Sigma Model | We consider the evolution of perturbations to a flat FRW universe that arise
from a ``stiff source,'' such as a self-ordering cosmic field that forms in a
global symmetry-breaking phase transition and evolves via the Kibble mechanism.
Although the linear response of the normal matter to the source depends on the
detail... | 1993-11-09 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Andrew H. Jaffe |
astro-ph/9311022 | Ultraviolet Radiation from Evolved Stellar Populations -- I. Models | This series of papers comprises a systematic exploration of the hypothesis
that the far ultraviolet radiation from star clusters and elliptical galaxies
originates from extremely hot horizontal-branch (HB) stars and their post-HB
progeny. This first paper presents an extensive grid of calculations of stellar
models fro... | 1993-11-09 | 2009-10-22 | [
"astro-ph"
] | B. Dorman, R. Rood, and R. O'Connell |
astro-ph/9311021 | A toolbox for general elliptical gravitational lenses | We introduce a formalism to describe 2D-Potentials for 2D-matter (or charge)
distributions with arbitrary elliptical symmetry including varying eccentricity
and twisting of the iso-density curves. We use this approach to describe
elliptical matter distributions such as elliptical galaxies or clusters as
gravitational l... | 1993-11-09 | 2007-05-23 | [
"astro-ph"
] | T. Schramm |
astro-ph/9311024 | Polarization of the Microwave Background in Inflationary Cosmology | We evaluate the large scale polarization of the cosmic microwave background
induced, via Thomson scattering prior to decoupling, by nearly scale-invariant
spectra of scalar and tensor metric perturbations, such as those predicted by
most inflationary models of the early Universe. We solve the radiative transfer
equatio... | 1993-11-09 | 2016-08-30 | [
"astro-ph",
"gr-qc"
] | Diego Harari and Matias Zaldarriaga (Univ. of Buenos Aires) |
astro-ph/9311020 | Mapping Moderate Redshift Cluster | To test whether clusters have rising mass to light ratios at large radii and
to estimate the amplitude of the density fluctuation spectrum on the scale of
10\hmpc\ the Canadian Network for Observational Cosmology (CNOC) cluster
collaboration is obtaining Multi-Object Spectrograph velocities and two colour
photometry fo... | 1993-11-07 | 2007-05-23 | [
"astro-ph"
] | Carlberg, et al |
astro-ph/9311018 | Non-Linear Clustering in the Cold+Hot Dark Matter Model | We use high resolution PM N-body simulations to follow the development of
non-linear clustering in a flat Universe, dominated by Cold + Hot Dark Matter
(CHDM) with 60% of CDM, 30% of HDM and 10% of baryons; a simulation box of 100
Mpc a side ($h=0.5$) is used. We analyze two CHDM simulations with $b =1.5$
(COBE normali... | 1993-11-06 | 2015-06-24 | [
"astro-ph"
] | S.A. Bonometto, S. Borgani, S. Ghigna, A. Klypin, J.R. Primack |
astro-ph/9311019 | Convergence properties of finite-difference hydrodynamics schemes in the
presence of shocks | We investigate asymptotic convergence in the~$\Delta x \!\rightarrow\! 0$
limit as a tool for determining whether numerical computations involving shocks
are accurate. We use one-dimensional operator-split finite-difference schemes
for hydrodynamics with a von Neumann artificial viscosity. An internal-energy
scheme con... | 1993-11-06 | 2009-09-25 | [
"astro-ph"
] | Paul A. Kimoto & David F. Chernoff |
astro-ph/9311017 | Global String Radiation | We study Goldstone boson (or axion) radiation from global $U(1)$-strings
making direct quantitative comparisons between numerical scalar field theory
simulations and linearized analytic calculations in the dual antisymmetric
tensor representation. Concentrating on periodic long string configurations, we
show excellent ... | 1993-11-05 | 2009-10-22 | [
"astro-ph",
"cond-mat",
"hep-ph",
"hep-th"
] | R.A.Battye and E.P.S.Shellard |
astro-ph/9311016 | Molecular Lines in Bok Globules and Around Herbig Ae/be Stars | This paper is intended as part of a more extensive molecular line survey in
star forming regions along the evolutionary track of a collapsing cloud toward
a young stellar object. We have studied a sample of seven small dark clouds
(Bok globules) and eight Herbig Ae/Be stars in the J=1->0 transition of
HCO$^{+}$, H$^{13... | 1993-11-05 | 2009-10-22 | [
"astro-ph"
] | F. Scappini, G.G.C. Palumbo, G. Bruni and P. Bergman |
astro-ph/9311015 | Radio and Optical Emission, Spectral Shapes and Breaks in GRB | Relativistic blast wave models predict the spectrum of the emitted
synchrotron radiation. The electrons in the shocked region are heated to a Wien
distribution whose ``temperature'' is $1/3$ of the mean electron energy. This
energy scale determines a characteristic (break) frequency of synchrotron
radiation. At much lo... | 1993-11-03 | 2015-06-24 | [
"astro-ph"
] | J. I. Katz |
astro-ph/9311014 | Reconstruction of the Large Scale Structure | The large scale structure of the universe is reconstructed by means of the
Wiener filter and constrained realizations of Gaussian fields. The density
field constructed from optically selected galaxies (Hudson \cite{Hudson}) has
been sampled out to a distance of $80\hmpc$. This data set is used for the
reconstruction of... | 1993-11-03 | 2007-05-23 | [
"astro-ph"
] | Y. Hoffman |
astro-ph/9311013 | Clustering in Redshift Space: Linear Theory | The clustering in redshift space is studied here to first order within the
framework of gravitational instability. The distortion introduced by the
peculiar velocities of galaxies results in anisotropy in the galaxy
distribution and mode-mode coupling when analyzed in Fourier space. An exact
linear calculation of the f... | 1993-11-03 | 2008-02-03 | [
"astro-ph"
] | Saleem Zaroubi and Yehuda Hoffman |
astro-ph/9311008 | Large-scale correlations between QSOs and IRAS galaxies | We demonstrate that high-redshift 1-Jansky radio sources are correlated with
foreground IRAS galaxies on angular scales of several 10 arc minutes on a
statistical significance level of up to 99.8\%. Based on a theoretical analysis
published earlier, we propose to interpret these correlations in terms of
gravitational l... | 1993-11-02 | 2007-05-23 | [
"astro-ph"
] | M. Bartelmann and P. Schneider |
astro-ph/9311012 | Microwave Background Anisotropies in Primeval Isocurvature Baryon
Models: Constraints on the Cosmological Parameters | We have performed the most comprehensive predictions of the temperature
fluctuations \dtt in the primeval isocurvature baryon models to see whether or
not the models are consistent with the recent data on the cosmic microwave
background anisotropies. More specifically, we computed the \dtt corresponding
to the experime... | 1993-11-02 | 2009-10-22 | [
"astro-ph"
] | Takashi Chiba, Naoshi Sugiyama and Yasushi Suto |
astro-ph/9311011 | A gravitational lens model for B1422+231 | We construct a simple elliptical gravitational lens model for the quadruple
lens B1422+231 and show that the details of the configuration cannot be easily
understood in terms of this model; in particular, the flux ratios of the images
are hard to reproduce. This qualitatively verifies the results from a different
lens ... | 1993-11-02 | 2007-05-23 | [
"astro-ph"
] | R. Kormann, P. Schneider and M. Bartelmann |
astro-ph/9311009 | Magnetic Activity in Thick Accretion Disks and Associated Observable
Phenomena: II. Flux Storage | In paper I, we have studied the conditions under which flux tubes are
expelled from adiabatic thick accretion disks. In the present paper, we explore
a few other models of thick disks, where flux tubes could be stored. We show
that flux tubes with sufficiently weak fields are not expelled out if they move
adiabatically... | 1993-11-02 | 2009-10-22 | [
"astro-ph"
] | Sydney D'Silva and Sandip K. Chakrabarti |
astro-ph/9311010 | Magnetic Activity in Thick Accretion Disks and Associated Observable
Phenomena I. Flux Expulsion | We study the dynamics of toroidal magnetic flux tubes, symmetric about the
rotation axis, inside non-magnetic thick accretion disks around black holes. We
present model equations which include effects of gravity, centrifugal force,
pressure gradient force, Coriolis force, drag, magnetic tension and magnetic
buoyancy. W... | 1993-11-02 | 2009-10-22 | [
"astro-ph"
] | Sandip K. Chakrabarti and Sydney D'Silva |
astro-ph/9311003 | Structural Characteristics and Stellar Composition of Low Surface
Brightness Disk Galaxies | We present UBVI surface photometry of a sample of low surface brightness
(LSB) disk galaxies. LSB disk galaxies are fairly well described as exponential
disks with no preferred value for either scale length, central surface
brightness, or rotational velocity. Indeed, the distribution of scale lengths
is indistinguishab... | 1993-11-01 | 2009-10-22 | [
"astro-ph"
] | Stacy McGaugh & Greg Bothun |
astro-ph/9311007 | The X-ray Behavior of Two CVs: TT Ari and DP Leo | We present ROSAT PSPC observations of the nova-like, or intermediate polar,
TT Ari and the eclipsing polar DP Leo. Observations of TT Ari were performed as
part of a simultaneous multiwavelength campaign. The X-ray spectrum of TT Ari
from ROSAT was combined with Ginga observations to suggest the presence of
three disti... | 1993-11-01 | 2007-05-23 | [
"astro-ph"
] | Craig R. Robinson and France A. Cordova |
astro-ph/9311001 | Monitoring of active galactic nuclei. V. The Seyfert 1 galaxy Markarian
279 | We report on the Lovers of Active Galaxies' (LAG) monitoring of the Seyfert 1
galaxy Markarian 279 from January to June 1990. The source, which was in a very
bright state, gradually weakened after the first month of monitoring: the
H-Alpha and H-Beta flux decreased by 20% and 35% respectively, and the
continuum under H... | 1993-11-01 | 2007-05-23 | [
"astro-ph"
] | G.M. Stirpe, et al |
astro-ph/9311005 | Colors and color gradients in bulges of galaxies | We have obtained surface photometry in U, B, R and I for a complete optically
selected sample of 45 early-type spiral galaxies, to investigate the colors and
color gradients of spiral bulges. Color profiles in U-R, B-R, U-B and R-I have
been determined in wedges opening on the minor axes. Based on several criteria,
we ... | 1993-11-01 | 2009-09-25 | [
"astro-ph"
] | M. Balcells and R.F. Peletier |
astro-ph/9311002 | Steps toward determination of the size and structure of the broad-line
region in active galactic nuclei. VI. Variability of NGC 3783 from
ground-based data | The Seyfert 1 galaxy NGC 3783 was intensely monitored between 1991 December
and 1992 August. We present the results from the ground-based observations in
the optical and near-IR, which complement the data-set from the IUE, discussed
elsewhere. Spectroscopic and photometric data from many observatories were
combined in ... | 1993-11-01 | 2009-10-22 | [
"astro-ph"
] | G.M. Stirpe, et al |
astro-ph/9311004 | Spatial Distribution of Low Surface Brightness Galaxies | Using redshift samples, we calculate the cross-correlation functions of LSB
galaxies with normal galaxies in complete samples (i.e. CfA and IRAS), which
enables us to compare directly the amplitudes and shapes of the correlation
functions. For pair separations $r\gs 2\mpc$, we find that the shape is in
agreement with t... | 1993-11-01 | 2015-06-24 | [
"astro-ph"
] | H.J. Mo, S.S. McGaugh, & G.D. Bothun |
astro-ph/9311006 | Primordial Nucleosynthesis in Conformal Weyl Gravity | Recently conformal Weyl gravity has been considered as a candidate
alternative gravity theory. This fourth-order theory is attractive because it
is the only metric theory of gravity which is invariant under local conformal
transformations of the metric. We calculate the primordial light element
abundances in this theor... | 1993-11-01 | 2009-09-25 | [
"astro-ph",
"gr-qc"
] | Lloyd Knox and Arthur Kosowsky (University of Chicago) |
astro-ph/9310051 | Reionization and Cosmic Microwave Anisotropies | The effects of reionization, occurring after standard recombination in cold
dark matter-dominated models, on CMB anisotropies are investigated. Late-time
reionization reduces the CMB anisotropies, in particular, on degree scales. It
is found that constraints on cold dark matter-dominated models from the highest
frequen... | 1993-10-29 | 2009-10-22 | [
"astro-ph"
] | Naoshi Sugiyama, Joseph Silk and Nicola Vittorio |
astro-ph/9310052 | Models for the Evolution of the Spectral Energy Distribution of
Elliptical Galaxies from UV to Far--IR Wavelengths | We have worked out evolutionary synthesis models of the broad-band spectral
energy distribution of elliptical galaxies over the whole frequency range from
UV to far--IR. Internal extinction and far--IR re--emission by interstellar
dust have been taken into account in a self--consistent way. Diffuse dust
emission has be... | 1993-10-29 | 2009-10-22 | [
"astro-ph"
] | P. Mazzei, G. De Zotti, C. Xu |
astro-ph/9310048 | Analysis of Small Scale MBR Anisotropy in the Presence of Foreground
Contamination | Many of the current round of experiments searching for anisotropies in the
MBR are confronting the problem of how to disentangle the cosmic signal from
contamination due to galactic and intergalactic foreground sources. Here we
show how commonly used likelihood function techniques can be generalized to
account for fore... | 1993-10-28 | 2009-10-22 | [
"astro-ph"
] | Scott Dodelson and Albert Stebbins |
astro-ph/9310049 | Bulge/Disk Segregation in the Universe | The observations of bulge/disk segregation in the Universe are reviewed with
a focus on whether the observed segregation in clusters is local or global, and
whether there is bulge-disk segregation on large-scales. The high concentration
of bulge-rich galaxies in the cores of clusters of galaxies can be accounted
for by... | 1993-10-28 | 2007-05-23 | [
"astro-ph"
] | Gary A. Mamon |
astro-ph/9310050 | Modes of Elliptical Galaxies | Long lived modes of elliptical galaxies can exist {\it \`a la} van Kampen.
Specific systems may possess long lived oscillations which Landau damp on time
scales longer than a Hubble time. Some physical processes such as a close
encounter, tidal forces from a cluster or an orbiting satellite could
preferentially excite ... | 1993-10-28 | 2009-10-22 | [
"astro-ph"
] | Ue-Li Pen |
astro-ph/9310047 | Simulation of Thick Accretion Disks with Standing Shocks by Smoothed
Particle Hydrodynamics | We present results of numerical simulation of inviscid thick accretion disks
and wind flows around black holes. We use Smoothed Particle Hydrodynamics (SPH)
technique for this purpose. Formation of thick disks are found to be preceded
by shock waves travelling away from the centrifugal barrier. For a large range
of the... | 1993-10-27 | 2009-10-22 | [
"astro-ph"
] | Diego Molteni, G. Lanzafame and S. K. Chakrabarti |
astro-ph/9310045 | Gravitational Waves and the Polarisation of the Cosmic Microwave
Background | We discuss the influence of gravitational waves (GWs) upon the polarisation
of the Cosmic Microwave Background Radiation (CMBR). We show how to compute the
{\em rms} temperature anisotropy and polarisation of the CMBR induced by GWs of
arbitrary wavelength. We find that the ratio of polarisation, $\Pi$, to
anisotropy, ... | 1993-10-26 | 2016-06-08 | [
"astro-ph"
] | R. A. Frewin, A. G. Polnarev and P. Coles |
astro-ph/9310046 | The Small Scale Integrated Sachs-Wolfe Effect | The integrated Sachs-Wolfe effect (ISW) can be an important factor in the
generation of Cosmic Microwave Background anisotropies on all scales,
especially in a reionized curvature or lambda dominated universe. We present an
analytic treatment of the ISW effect, which is analogous to thick last
scattering surface techni... | 1993-10-26 | 2009-07-17 | [
"astro-ph"
] | Wayne Hu and Naoshi Sugiyama |
astro-ph/9310044 | Gravitational Radiation from First-Order Phase Transitions | We consider the stochastic background of gravity waves produced by
first-order cosmological phase transitions from two types of sources: colliding
bubbles and hydrodynamic turbulence. First we discuss the fluid mechanics of
relativistic spherical combustion. We then numerically collide many bubbles
expanding at a veloc... | 1993-10-25 | 2009-10-22 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | Marc Kamionkowski, Arthur Kosowsky, and Michael S. Turner |
astro-ph/9310043 | Weighted Bias and Galaxy Clustering | We consider a weighted biasing scheme for galaxy clustering. This differs
from previous treatments in the fact that the biased density field coincides
with the background mass--density whenever the latter exceeds a given threshold
value. There is some physical motivation for this scheme and it is in better
accord with ... | 1993-10-25 | 2015-06-24 | [
"astro-ph"
] | P. Catelan, P. Coles, S. Matarrese and L. Moscardini |
astro-ph/9310042 | Smoothed Particle Hydrodynamics Confronts Theory: Formation of Standing
Shocks in Accretion Disks and Winds Around Black Holes | We present results of numerical simulation of thin accretion disks and winds.
We use the Smoothed Particle Hydrodynamics (SPH) technique for this purpose. We
show that the simulation agrees very well with the recent theoretical work on
the shock formation. The most significant conclusion is that shocks in an
inviscid f... | 1993-10-25 | 2009-10-22 | [
"astro-ph"
] | Sandip K. Chakrabarti and Diego Molteni |
astro-ph/9310041 | Topological Defects and Structure Formation | Topological defects are produced during phase transitions in the very early
Universe. They arise in most unified theories of strong, weak and
electromagnetic interactions. These lectures focus on the role of topological
defects in cosmology, with particular emphasis on the models of structure
formation based on defects... | 1993-10-24 | 2010-11-01 | [
"astro-ph",
"hep-ph"
] | Robert H. Brandenberger (Brown University) |
astro-ph/9310040 | How Unusual is the Locally Quiet Hubble Flow? | The local galaxy distribution offers an interesting constraint to
cosmological models of structure formation. The galaxies are distributed in a
long, filamentary structure, presumably the result of large amplitude
gravitational instability, yet the local velocity field is cold. In particular,
there are no blueshifted g... | 1993-10-22 | 2009-10-22 | [
"astro-ph"
] | David Schlegel, Marc Davis, Frank Summers and Jon A. Holtzman |
astro-ph/9310039 | Statistical Tests for the Gaussian Nature of Primordial Fluctuations
Through CBR Experiments | Information about the physical processes that generate the primordial
fluctuations in the early universe can be gained by testing the Gaussian nature
of the fluctuations through cosmic microwave background radiation (CBR)
temperature anisotropy experiments. One of the crucial aspects of density
perturbations that are p... | 1993-10-21 | 2009-12-30 | [
"astro-ph"
] | Xiaochun Luo |
astro-ph/9310038 | On Nonlinear Approximations to Cosmic Problems with Mixed Boundary
Conditions | Nonlinear approximations to problems with mixed boundary conditions are
useful for predicting large-scale streaming velocities from the density field,
or vice-versa. We evaluate the schemes of Bernardeau \cite{bernardeau92},
Gramann \cite{gramann93}, and Nusser \etal \cite{nusser91}, using smoothed
density and velocity... | 1993-10-20 | 2007-05-23 | [
"astro-ph"
] | Paul J. Mancinelli, Amos Yahil, Galit Ganon, and Avishai Dekel |
astro-ph/9310037 | Filling Factors and Ionized Masses in Planetary Nebulae | We calculate filling factors (${\varepsilon}$) and ionized masses (M$_{\rm
i}$) for a total of 84 galactic and extragalactic planetary nebulae (PNe) at
known distances. To do these calculations, we have chosen forbidden line
electron densities, observed angular diameters, and H${\beta}$ fluxes, from the
most recent mea... | 1993-10-19 | 2007-05-23 | [
"astro-ph"
] | F. R. Boffi and L. Stanghellini |
astro-ph/9310036 | General Relativistic Dynamics of Irrotational Dust: Cosmological
Implications | The non--linear dynamics of cosmological perturbations of an irrotational
collisionless fluid is analyzed within General Relativity. Relativistic and
Newtonian solutions are compared, stressing the different role of boundary
conditions in the two theories. Cosmological implications of relativistic
effects, already pres... | 1993-10-18 | 2009-10-22 | [
"astro-ph"
] | Sabino Matarrese, Ornella Pantano and Diego Saez |
astro-ph/9310035 | A New Method for Estimating the Distance to Young Open Clusters | We present a new technique for estimating the distance to young open
clusters. The method requires accurate measurement of the axial rotation period
of late-type members of the cluster: rotation periods are first combined with
projected rotation velocities and an estimate of the angular diameter for each
star -- obtain... | 1993-10-15 | 2015-06-24 | [
"astro-ph"
] | Martin A. Hendry, Mark A. O'Dell and Andrew Collier-Cameron
(University of Sussex, Brighton BN1 9QH.) |
astro-ph/9310027 | Properties of $^{8}$Be and $^{12}$C deduced from the folding--potential
model | The $\alpha$--$\alpha$ differential cross sections are analyzed in the
optical model using a double--folded potential. With the knowledge of this
potential bound and resonance--state properties of $\alpha$--cluster states in
$^{8}$Be and $^{12}$C as well as astrophysical S--factors of
$^{4}$He($\alpha$,$\gamma$)$^{8}$B... | 1993-10-14 | 2015-06-24 | [
"astro-ph"
] | P. Mohr, H. Abele, V. K\"olle, G. Staudt, H. Oberhummer, H. Krauss |
astro-ph/9310032 | Cosmic-Ray Antiprotons from Neutralino Annihilation into Gluons | We estimate the flux of cosmic-ray antiprotons expected from the annihilation
of neutralinos in the galactic halo. The antiproton signal may offer an
important alternative detection scheme in the case that neutralino annihilation
proceeds mainly to the two-gluon final state. | 1993-10-14 | 2010-11-30 | [
"astro-ph",
"hep-ph"
] | Gerard Jungman and Marc Kamionkowski |
astro-ph/9310028 | What Do We Mean by Malmquist Bias? | In this paper we review the two main approaches to the problem of Malmquist
bias which have been adopted in the cosmology literature, and show how these
two formulations of the problem represent fundamentally different views of the
nature of probability. We discuss the assumptions upon which both approaches
are based a... | 1993-10-14 | 2007-05-23 | [
"astro-ph"
] | Martin A. Hendry, John F. L. Simmons, Andrew M. Newsam |
astro-ph/9310030 | HST Observations of Globular Clusters in M31.I:Surface Photometry of 13
Objects | We present the initial results of a study of globular clusters in M31, using
the Faint Object Camera (FOC) on the Hubble Space Telescope (HST). The sample
of objects consists of 13 clusters spanning a range of properties. Three inde-
pendent image deconvolution techniques were used in order to compensate for the
optica... | 1993-10-14 | 2007-05-23 | [
"astro-ph"
] | F. Fusi Pecci, P. Battistini, O. Bendinelli, F. B\`onoli, C. Cacciari,
S. Djorgovski, L. Federici, F.R. Ferraro, G. Parmeggiani, N. Weir, F. Zavatti |
astro-ph/9310029 | Optimal Galaxy Distance Estimators | The statistical properties of galaxy distance estimators are studied and a
rigorous framework is developed for identifying and removing the effects of
Malmquist bias due to obsevational selection. The prescription of Schechter
(1980) for defining unbiased distance estimators is extended to more general --
and more real... | 1993-10-14 | 2009-10-22 | [
"astro-ph"
] | Martin A. Hendry, John F. L. Simmons |
astro-ph/9310031 | Optimal Addition of Images for Detection and Photometry | In this paper we describe weighting techniques used for the optimal
coaddition of CCD frames with differing characteristics. Optimal means maximum
signal-to-noise (s/n) for stellar objects. We derive formulae for four
applications: 1) object detection via matched filter, 2) object detection
identical to DAOFIND, 3) ape... | 1993-10-14 | 2009-10-22 | [
"astro-ph"
] | Philippe Fischer, Greg P. Kochanski |
astro-ph/9310033 | New Distance Measurements to the $\alpha$ Persei and Pleiades Clusters | We apply the new distance measuring technique of Hendry, O'Dell and Collier-
Cameron, 1993, to the Pleiades and $\alpha$ Persei clusters. The method relies
on knowledge of the periods, rotation velocities and angular diameters of a
sample of late-type stars within each cluster. The angular diameters were found
by recal... | 1993-10-14 | 2015-06-24 | [
"astro-ph"
] | Mark A. O'Dell, Martin A. Hendry, Andrew Collier Cameron |
astro-ph/9310034 | Study of the Core of the Shapley Concentration: I.the Sample | We report the first results of a spectroscopic survey of galaxies in the core
of the Shapley Concentration, the richest nearby supercluster of clusters of
galaxies. We have measured 311 new galaxy redshifts in an area of $\sim 4.5$
square degrees centered around the Abell cluster A3558. Considering also the
data alread... | 1993-10-14 | 2015-06-24 | [
"astro-ph"
] | S. Bardelli, E.Zucca, G.Vettolani, G.Zamorani, et al |
astro-ph/9310026 | Alpha Clustering and the stellar nucleosynthesis of carbon | The astrophysical S--factor and reaction rates for the triple--alpha process
are calculated in the direct--capture model. It is shown that the stellar
carbon production is extremely sensitive to small variations in the N--N
interaction. | 1993-10-14 | 2015-06-24 | [
"astro-ph"
] | H. Oberhummer, H. Krauss, K. Gr\"un, T. Rauscher, H. Abele, P. Mohr,
G. Staudt |
astro-ph/9310023 | Mergers of Systems Containing Gas | Several simple mergers between model galaxy clusters containing a mixture of
gas and dark matter are examined, testing the coupling of the gas to the
underlying collisionless material. The gas is shocked, irreversibly dissipating
the energy fed into it by the collisionless component and forms a resolved
constant-densit... | 1993-10-13 | 2015-06-24 | [
"astro-ph"
] | F.R.Pearce, P.A.Thomas, H.M.P.Couchman |
astro-ph/9310024 | An Owner's Guide to Smoothed Particle Hydrodynamics | We present a practical guide to Smoothed Particle Hydrodynamics (\SPH) and
its application to astrophysical problems. Although remarkably robust, \SPH\
must be used with care if the results are to be meaningful since the accuracy
of \SPH\ is sensitive to the arrangement of the particles and the form of the
smoothing ke... | 1993-10-13 | 2007-05-23 | [
"astro-ph"
] | T.J.Martin, F.R.Pearce, P.A.Thomas |
astro-ph/9310022 | Third-Order Lagrangian Perturbation Theory - Realization at High-Spatial
Resolution | The Lagrangian theory of gravitational instability of homogeneous-isotropic
Friedman-Lemaitre cosmogonies investigated and solved in the series of papers
by Buchert (1989), (1992), Buchert & Ehlers (1993), Buchert (1993a,b), Ehlers &
Buchert (1993), is illustrated. The third-order solution of this theory for
generic in... | 1993-10-13 | 2007-05-23 | [
"astro-ph"
] | T. Buchert, A. G. Weiss |
astro-ph/9310025 | A Simple Model of Large Scale Structure Formation | We explore constraints on inflationary models employing data on large scale
structure mainly from COBE temperature anisotropies and IRAS selected galaxy
surveys, taking care not to apply linear perturbation theory to data in the
non-linear regime. In models where the tensor contribution to the COBE signal
is negligible... | 1993-10-13 | 2009-12-30 | [
"astro-ph",
"hep-ph"
] | R.K. Schaefer and Q. Shafi |
astro-ph/9310021 | On the Galactic Evolution of $D$ and $^3He$ | The determined abundances of primordial $^4He$ and $^7Li$ provide a basis
with which to test the standard model of big bang nucleosynthesis in
conjunction with the other two light element isotopes $D$ and $^3He$, also
produced in the big bang. Overall, consistency in the standard big bang
nucleosynthesis model is best ... | 1993-10-12 | 2009-10-22 | [
"astro-ph"
] | Elisabeth Vangioni-Flam, Keith A. Olive, and Nikos Prantzos |
astro-ph/9310020 | The Nuclear Ten Micron Emission of Spiral Galaxies | We examine the 10\m\ emission of the central regions of 281 spiral galaxies,
after having compiled all ground-based, small-aperture ($\sim$5") broad-band
photometric observations at \l$\sim$10\m\ (N magnitudes) published in the
literature. We evaluate the compactness of the $\sim$10\m\ emission of galaxy
nuclei by comp... | 1993-10-12 | 2009-10-22 | [
"astro-ph"
] | G. Giuricin, L. Tamburini, F. Mardirossian, M. Mezzetti, P. Monaco |
astro-ph/9310019 | The Meaning of Eros/Macho | Most of the mass density in the Universe---and in the halo of our own
galaxy---exists in the form of dark matter. Overall, the contribution of
luminous matter (in stars) to the mass density of the Universe is less than
1\%; primordial nucleosynthesis indicates that baryons contribute between 1\%
and 10\% of the critica... | 1993-10-12 | 2009-09-25 | [
"astro-ph",
"hep-ph"
] | Michael S. Turner (Fermilab/U. Chicago) |
astro-ph/9310018 | Non--Linear Dynamics of Irrotational Dust: Eulerian and Lagrangian
Approaches | Some recently proposed approximations to follow the non--linear evolution of
collisionless matter perturbations in the universe are reviewed. The first one,
called frozen--flow approximation, is an Eulerian method within Newtonian
theory, and is based on neglecting the role of particle inertia compared to the
damping i... | 1993-10-11 | 2007-05-23 | [
"astro-ph"
] | S. Matarrese, P. Catelan, F. Lucchin, L. Moscardini, O. Pantano and D.
Saez |
astro-ph/9310017 | The Correlation Function of Rich Clusters of Galaxies in CDM-like Models | We use ensembles of high-resolution CDM simulations to investigate the shape
and amplitude of the two point correlation function of rich clusters. The
standard scale-invariant CDM model with $\Omega=1$ provides a poor description
of the clustering measured from the APM rich cluster redshift survey, which is
better fitt... | 1993-10-11 | 2015-06-24 | [
"astro-ph"
] | R. A. C. Croft and G. Efstathiou |
astro-ph/9310016 | Large-scale structure and motions from simulated galaxy clusters | We use high resolution dissipationless N-body simulations to examine the
spatial distribution of galaxy clusters on large scales. The Standard CDM model
and two of its main competitors, Low density CDM and Mixed Dark Matter are
compared.The two-point correlation function of simulated clusters is compared
with an extend... | 1993-10-11 | 2007-05-23 | [
"astro-ph"
] | R. A. C. Croft and G. Efstathiou |
astro-ph/9310015 | Baryonic Content of Galactic Halos and Constraints on Models for
Structure Formation | The recent detection of microlensing of stars of LMC by compact objects in
the halo of our galaxy suggests that our galaxy is surrounded by a non-luminous
halo made of compact objects with mass of about $(0.03-0.5) \msun$. The rate of
detection could be consistent with the assumption that these halo objects are
distrib... | 1993-10-07 | 2007-05-23 | [
"astro-ph"
] | T.Padmanabhan and K.Subramanian |
astro-ph/9310012 | Natural Inflation | A pseudo-Nambu-Goldstone boson, with a potential of the form $ V(\phi) =
\Lambda^4 [1 + \cos(\phi/f)]$, can naturally give rise to an epoch of inflation
in the early universe (Freese, Frieman, and Olinto 1990). The potential is
naturally flat (as required by microwave background limits on the amplitude of
density fluct... | 1993-10-06 | 2007-05-23 | [
"astro-ph"
] | Katherine Freese |
astro-ph/9310013 | General Analytic Results for Nonlinear Waves and Solitons in Molecular
Clouds | We study nonlinear wave phenomena in self-gravitating fluid systems, with a
particular emphasis on applications to molecular clouds. This paper presents
analytical results for one spatial dimension. We show that a large class of
physical systems can be described by theories with a ``charge density''
$q(\rho)$; this qua... | 1993-10-06 | 2009-10-22 | [
"astro-ph"
] | Fred C. Adams, Marco Fatuzzo, and Richard Watkins |
astro-ph/9310014 | Subclustering and Luminous-Dark Matter Segregation in Galaxy Clusters | We have performed a series of N-body experiments on Connection Machine-5 in
order to simulate the formation of galaxy clusters gravitationally dominated by
a massive dark background. In accordance with previous authors we find an
extremely inhomogeneous evolution where subcondensations are continually formed
and merged... | 1993-10-06 | 2009-10-22 | [
"astro-ph"
] | A. Serna, J.M. Alimi and H. Scholl |
astro-ph/9310010 | Self-Gravity and Dissipation in Polar Rings | We construct models of highly-inclined (``polar'') rings in an external
potential including both self--gravity and dissipation due to a drag force. We
adopt the oblate spheroidal scale--free logarithmic potential with axis ratio
$q=0.85$ and an initial inclination of 80$^\circ$ for the self--gravitating
rings. Stellar ... | 1993-10-05 | 2009-10-22 | [
"astro-ph"
] | John Dubinski and Dimitris Christodoulou |
astro-ph/9310011 | Lowered Evans Models: Analytic Distribution Functions of Oblate Halo
Potentials | We describe an analytic distribution function of a finite, oblate stellar
system that is useful for the practical modelling of dark halos. The function
is determined by lowering Evans's (1993) distribution function of a flattened,
cored isothermal system in analogy to the lowering of the singular, isothermal
sphere in ... | 1993-10-05 | 2015-06-24 | [
"astro-ph"
] | Konrad Kuijken and John Dubinski |
astro-ph/9310008 | Bias in Velocity Field Recoveries | We investigate the effect of using different distance estimators on the
recovery of the peculiar velocity field of galaxies using Potent. An
inappropriate choice of distance estimator will give rise to spurious flows. We
discuss methods of minimising these biases and the levels of accuracy required
of distance estimato... | 1993-10-04 | 2007-05-23 | [
"astro-ph"
] | Andrew Newsam, John F.L. Simmons, Martin Hendry |
astro-ph/9310005 | Gamma-Ray Bursts and Topology of the Universe | In this letter we propose a physical explanation for recently reported
correlations between pairs of close and antipodal gamma-ray bursts from
publicly available BATSE catalogue. Our model is based on the cosmological
scenario in which bursters are located at cosmological distances of order of
0.5--2~Gpc. Observed dist... | 1993-10-04 | 2007-05-23 | [
"astro-ph"
] | Marek Biesiada |
astro-ph/9310007 | Potent and Max-Flow Algorithms | Although Potent purports to use only radial velocities in retrieving the
potential velocity field of galaxies, the derivation of transverse components
is implicit in the smoothing procedures. Thus the possibility of using
nonradial line integrals to derive the velocity field arises. In the case of
inhomogeneous distrib... | 1993-10-04 | 2007-05-23 | [
"astro-ph"
] | John F.L. Simmons, Andrew Newsam, Martin Hendry |
astro-ph/9310009 | Bayesian Estimates of the Large-Scale Velocity Field in Real Space and
Redshift Space | Methods for inferring the velocity field from the peculiar velocity data are
described and applied to old and newer data. Inhomogeneous Malmquist bias and
ways to avoid it are discussed and utilized. We infer that these biases are
probably important in interpreting the data. | 1993-10-04 | 2007-05-23 | [
"astro-ph"
] | Albert Stebbins |
astro-ph/9310004 | Some Statistics for Measuring Large-Scale Structure | Good statistics for measuring large-scale structure in the Universe must be
able to distinguish between different models of structure formation. In this
paper, two and three dimensional ``counts in cell" statistics and a new
``discrete genus statistic" are applied to toy versions of several popular
theories of structur... | 1993-10-03 | 2007-05-23 | [
"astro-ph",
"hep-ph"
] | Robert H. Brandenberger, David M. Kaplan and Stephen A, Ramsey (Brown
Univ.) |
astro-ph/9310006 | On the Limitations of Neutrino Emissivity Formula of Iwamoto | The neutrino emissivity from two and three flavour quark matter is
numerically calculated and compared with Iwamoto's formula. We find that the
calculated emissivity is smaller than Iwamoto's result by orders of magnitude
when $p_{f}(u)+p_{f}(e)-p_{f}(d(s))$ is comparable with the temperature. We
attribute it to the se... | 1993-10-03 | 2009-10-22 | [
"astro-ph"
] | Sanjay K. Ghosh, S. C. Phatak and Pradip K. Sahu |
astro-ph/9310003 | Do Gamma-Ray Bursts Come from the Oort Cloud? | We examine the possibility that gamma-ray bursts arise from sources in the
Oort comet cloud, basing most of our arguments on accepted models for the
formation and spatial distribution of the cloud. We identify three severe
problems with such models: (1) There is no known mechanism for producing bursts
that can explain ... | 1993-10-02 | 2009-10-22 | [
"astro-ph"
] | T. E. Clarke, O. Blaes, adn S. Tremaine |
astro-ph/9310002 | A Morphology--Cosmology Connection for X--Ray Clusters | We employ N--body/$3D$ gas dynamic simulations of the formation of galaxy
clusters to determine whether cluster X--ray morphologies can be used as
cosmological constraints. Confirming the analytic expectations of Richstone,
Loeb, \& Turner, we demonstrate that cluster evolution is sensitive to the
cosmological model in... | 1993-10-01 | 2009-10-22 | [
"astro-ph"
] | August Evrard, Joseph Mohr, Daniel Fabricant & Margaret Geller |
astro-ph/9310001 | A Cosmic String Specific Signature on the Cosmic Microwave Background | Using an analytical model for the string network we show that the kurtosis of
cosmic microwave background (CMB) temperature gradient maps is a good statistic
to distinguish between the cosmic string model and inflationary models of
structure formation. The difference between the stringy and inflationary value
for the k... | 1993-10-01 | 2011-05-10 | [
"astro-ph",
"hep-ph"
] | R. Moessner (Brown Univ.), L. Perivolaropoulos (Harvard-Smithsonian
CFA) and R. Brandenberger (Brown Univ.) |
astro-ph/9309059 | The Growth of Bubbles in Cosmological Phase Transitions | We study how bubbles grow after the initial nucleation event in generic
first-order cosmological phase transitions characterised by the values of
latent heat, interface tension and correlation length, and driven by a scalar
order parameter $\phi$. Equations coupling $\phi$ and the fluid variables $v$
and $T$ and depend... | 1993-09-30 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | J. Ignatius, K. Kajantie, H. Kurki-Suonio and M. Laine |
astro-ph/9309056 | Testing Higher-Order Lagrangian Perturbation Theory Against Numerical
Simulations - 1. Pancake Models | We present results showing an improvement of the accuracy of perturbation
theory as applied to cosmological structure formation for a useful range of
quasilinear scales. The Lagrangian theory of gravitational instability of an
Einstein-de Sitter dust cosmogony investigated and solved up to the third order
in the series... | 1993-09-30 | 2007-05-23 | [
"astro-ph"
] | T.Buchert, A.L.Melott, A.G.Weiss |
astro-ph/9309051 | Theory of Local Times | A model of a stationary universe is proposed. In this framework, time is
defined as a local and quantum-mechanical notion in the sense that it is
defined for each local and quantum-mechanical system consisting of finite
number of particles. The total universe consisting of infinite number of
particles has no time assoc... | 1993-09-30 | 2010-11-19 | [
"astro-ph",
"gr-qc"
] | Hitoshi Kitada |
astro-ph/9309057 | Structures in Galaxy Clusters | The analysis of the presence of substructures in 16 well-sampled clusters of
galaxies suggests a stimulating hypothesis: Clusters could be classified as
unimodal or bimodal, on the basis of to the sub-clump distribution in the {\em
3-D} space of positions and velocities. The dynamic study of these clusters
shows that t... | 1993-09-30 | 2009-10-22 | [
"astro-ph"
] | E.Escalera, A.Biviano, M.Girardi, G.Giuricin, F.Mardirossian,
A.Mazure, and M.Mezzetti |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.