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/9510090 | The Canada France Redshift Survey VIII: Evolution of the clustering of
galaxies from z~1 | We have used the projected two-point correlation function, $w(r_p)$, to
investigate the spatial distribution of the 591 galaxies with secure redshifts
between $0 \leq z \leq 1.3$ in the five CFRS fields.
The slope of the two-point correlation function for the sample as a whole is
$\gamma=1.64\pm0.05$, very similar to... | 1995-10-18 | 2016-08-30 | [
"astro-ph"
] | O. Le Fevre, D. Hudon, S.J. Lilly, D. Crampton, F. Hammer, L. Tresse |
astro-ph/9510088 | Mid-Infrared Imaging of Young Stellar Objects | We present arcsecond resolution mid-infrared (8--13 $\mu$m) images and
photometry of four young stellar objects (YSOs)~--- L1551-IRS5, HL~Tau, AS~205,
and AS~209 (V1121~Oph)~--- taken with the Berkeley Mid-Infrared Camera. For
AS~205, a known T Tauri binary, we also present near-infrared JHK images and
HKL$^{\prime}$ s... | 1995-10-18 | 2009-10-28 | [
"astro-ph"
] | Michael C. Liu, James R. Graham (UC Berkeley), A.M. Ghez (UCLA), M.
Meixner (UIUC), C.J. Skinner, Eric Keto, Roger Ball (IGPP/LLNL), J.F. Arens,
and J.G. Jernigan (SSL/UC Berkeley) |
astro-ph/9510091 | Cluster Dynamics and Cluster Masses | In spite of the promise of new techniques for constraining the mass
distribution in galaxy clusters, much remains to be learned from galaxy orbital
velocities. This article reviews the theory of potential estimation in hot
dynamical systems like galaxy clusters. An analysis is presented of the Coma
cluster, based on a ... | 1995-10-18 | 2007-05-23 | [
"astro-ph"
] | David Merritt and Karl Gebhardt (Rutgers University) |
astro-ph/9510082 | The Baryon Catastrophe and the multiphase intracluster medium | We review the theories and observations which together have led to the
concept of the Baryon Catastrophe: observations of the baryon fraction on the
scale of clusters of galaxies appear to be at least three times as high as the
universal baryon fraction predicted by the theory of primordial nucleosynthesis
in a flat, $... | 1995-10-17 | 2015-06-24 | [
"astro-ph"
] | K. F. Gunn and P. A. Thomas |
astro-ph/9510103 | X-ray Timing and Spectral Behavior of the Rapid Burster | We present an X-ray fast-timing and spectral analysis of the type II bursts
and the persistent emission (PE) of the Rapid Burster observed with the EXOSAT
Medium-Energy Instrument. The Hardness-Intensity and Color-Color Diagrams of
the Rapid Burster are somewhat different from those of the majority of other
low-mass X-... | 1995-10-17 | 2015-06-24 | [
"astro-ph"
] | Robert Rutledge, Lori Lubin, Walter Lewin, Brian Vaughan, Jan van
Paradijs, Michiel van der Klis |
astro-ph/9510086 | The energetics of flat and rotating early-type galaxies and their X-ray
luminosity | The global energy budget of the hot gas flows in early-type galaxies is used
to explain the recent observational results that S0 galaxies have lower mean
X-ray luminosity $L_X$ per unit optical luminosity $L_B$ than do ellipticals.
This could be explained with a higher heat input or with a lower gravitational
energy (a... | 1995-10-17 | 2015-06-24 | [
"astro-ph"
] | L. Ciotti (Osservatorio Astronomico di Bologna) and S. Pellegrini
(Dipartimento di Astronomia, Bologna) |
astro-ph/9510085 | The history of star formation of starburst galaxies | In this paper, we use different luminosity ratios to trace the histories of
star formation of two different kinds of starburst galaxies: HII galaxies and
starburst nucleus galaxies (SBNGs). The mean star formation rates (SFRs) for
these galaxies is comparable, and compatible with a near constant star
formation over a f... | 1995-10-17 | 2007-05-23 | [
"astro-ph"
] | Roger Coziol (Astrophysics Division, Instituto Nacional de Pesquisas
Espaciais (INPE)) |
astro-ph/9510083 | Is the Accretion Flow in NGC 4258 Advection-dominated? | The mass of the central black hole in the active galaxy NGC 4258 (M106) has
been measured to be $M=3.6\times10^7\Msun$ (Miyoshi et al. 1995). The Eddington
luminosity corresponding to this mass is $L_E=4.5\times10^{45}$ erg s$^{-1}$.
By contrast the X-ray luminosity of the nucleus of NGC 4258 between $2-10$ keV
is $(4\... | 1995-10-17 | 2009-10-28 | [
"astro-ph"
] | J.-P. Lasota, M. A. Abramowicz, X. Chen, J. Krolik, R. Narayan and I.
Yi |
astro-ph/9510084 | Thermal Instability of Advection-Dominated Disks against Local
Perturbations | Thermal instability is examined for advection-dominated one-temperature
accretion disks. We consider axisymmetric perturbations with short wavelength
in the radial direction. The viscosity is assumed to be sufficiently small for
the vertical hydrostatic balance to hold in perturbed states. The type of
viscosity is give... | 1995-10-17 | 2015-06-24 | [
"astro-ph"
] | Shoji Kato, Marek A. Abramowicz and Xingming Chen |
astro-ph/9510087 | Chaos and Elliptical Galaxies | Recent results on chaos in triaxial galaxy models are reviewed. Central mass
concentrations like those observed in early-type galaxies -- either stellar
cusps, or massive black holes -- render most of the box orbits in a triaxial
potential stochastic. Typical Liapunov times are 3-5 crossing times, and
ensembles of stoc... | 1995-10-17 | 2009-10-28 | [
"astro-ph"
] | David Merritt (Rutgers University) |
astro-ph/9510080 | Locally Optimally Emitting Clouds and the Origin of Quasar Emission
Lines | The similarity of quasar line spectra has been taken as an indication that
the emission line clouds have preferred parameters, suggesting that the
environment is subject to a fine tuning process. We show here that the observed
spectrum is a natural consequence of powerful selection effects. We computed a
large grid of ... | 1995-10-16 | 2011-05-05 | [
"astro-ph"
] | Jack Baldwin (CTIO), Gary Ferland, Kirk Korista and Dima Verner (Univ.
Ky) |
astro-ph/9510081 | Radio Science Investigation on a Mercury Orbiter Mission | We review the results from {\it Mariner 10} regarding Mercury's gravity field
and the results from radar ranging regarding topography. We discuss the
implications of improving these results, including a determination of the polar
component, as well as the opportunity to perform relativistic gravity tests
with a future ... | 1995-10-16 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | J. D. Anderson, S. G. Turyshev, S. W. Asmar, M. K. Bird, A. S.
Konopliv, T. P. Krisher, E. L. Lau, G. Schubert and W. L. Sjogren |
astro-ph/9510078 | Star Formation and Chemical Evolution in Damped Lya Clouds | Using the redshift evolution of the neutral hydrogen density, as inferred
from observations of damped Ly$\alpha$ clouds, we calculate the evolution of
star formation rates and elemental abundances in the universe. For most
observables our calculations are in rough agreement with previous results based
on the instantane... | 1995-10-16 | 2009-10-28 | [
"astro-ph"
] | R.A. Malaney (CITA) and B. Chaboyer (CITA) |
astro-ph/9510079 | Probing the halo of Centaurus A: a merger dynamical model for the PN
population | Photometry and kinematics of the giant elliptical galaxy NGC~5128
(Centaurus~A) based on planetary nebulae observations (Hui~\etal 1995) are used
to build dynamical models which allow us to infer the presence of a dark matter
halo. To this end, we apply a Quadratic Programming method. Constant
mass-to-light ratio model... | 1995-10-16 | 2007-05-23 | [
"astro-ph"
] | A. Mathieu, H. Dejonghe and X. Hui |
astro-ph/9510074 | A Technical Memorandum On Core Radii In Lens Statistics | Quantitative estimates of lensing probabilities must be self-consistent. In
particular, for asymptotically isothermal models: (1) using the $(3/2)^{1/2}$
correction for the velocity dispersion overestimates the expected number of
lenses by 150\% and their average separations by 50\%, thereby introducing
large cosmologi... | 1995-10-15 | 2007-05-23 | [
"astro-ph"
] | C.S. Kochanek (Harvard-Smithsonian Center For Astrophysics) |
astro-ph/9510076 | Deprojection of Axially Symmetric Objects | The deprojection of axisymmetric density distributions is generally
indeterminate to within the addition of certain axisymmetric distributions
(konus densities) that are invisible in projection. The known class of konus
densities is expanded considerably here through the introduction of {\em
semikonus functions}. These... | 1995-10-15 | 2015-06-24 | [
"astro-ph"
] | C.S. Kochanek & G.B. Rybicki (Harvard-Smithsonian Center For
Astrophysics) |
astro-ph/9510077 | Is There A Cosmological Constant? | We present limits on the cosmological constant from the statistics of
gravitational lenses using newly completed quasar surveys, new lens data, and a
range of lens models. The formal limit is $\lambda_0 < 0.66$ at 95\% confidence
in flat cosmologies, including the statistical uncertainties in the number of
lenses, gala... | 1995-10-15 | 2009-10-28 | [
"astro-ph"
] | C.S. Kochanek (Harvard-Smithsonian Center For Astrophysics) |
astro-ph/9510075 | Gravitational Lenses and the Structure of Galaxies | Nearly singular isothermal mass distributions with small core radii are
consistent with stellar dynamics, lens statistics, and lens models as a model
for E/S0 galaxies. Models like the de Vaucouleurs model with a constant
mass-to-light ratio are not. While the isothermal distributions are probably an
oversimplification... | 1995-10-15 | 2011-04-15 | [
"astro-ph"
] | C.S. Kochanek (Harvard-Smithsonian Center For Astrophysics) |
astro-ph/9510073 | Conversion of neutron stars to strange stars as an origin of gamma-ray
bursts | This paper argues that conversion of neutron stars to strange stars as an
origin of cosmological stars in the binaries with low-mass companions. Our
model may provide an explanation why the binary millisecond pulsars seem to
have same low magnetic fields. | 1995-10-14 | 2009-07-09 | [
"astro-ph"
] | K. S. Cheng and Z. G. Dai |
astro-ph/9510069 | Obscured AGB stars in the Magellanic Clouds II. Near-infrared and
mid-infrared counterparts | We have carried out an infrared search for obscured AGB stars in the
Magellanic Clouds. The survey uncovered a number of obscured AGB stars as well
as some supergiants with infrared excess. We present photometry of the sources
and discuss the colour diagrams and bolometric luminosities. Most of the AGB
stars are lumino... | 1995-10-13 | 2015-06-24 | [
"astro-ph"
] | Albert A. Zijlstra, Cecile Loup, L.B.F.M. Waters, P.A. Whitelock,
Jacco Th. van Loon and F. Guglielmo |
astro-ph/9510071 | Statistical Connections Between the Properties of Type Ia Supernovae and
the B--V Colors of Their Parent Galaxies, and the Value of H$_0$ | Statistical connections between the properties of Type Ia supernovae (SNe Ia)
and the B--V colors of their parent galaxies are established. Compared to SNe
Ia in blue galaxies [B-V$\la$0.75], SNe Ia in redder galaxies have (1) a wider
dispersion in the blueshifts of their Si II $\lambda$6355 absorption features,
ten da... | 1995-10-13 | 2016-08-30 | [
"astro-ph"
] | David Branch, W. Romanishin, and E. Baron |
astro-ph/9510070 | Preliminary Spectral Analysis of SN 1994I | We present optical spectra of the Type Ic supernova 1994I in M51 and
preliminary non-LTE analysis of the spectra. Our models are not inconsistent
with the explosions of C+O cores of massive stars. While we find no direct
evidence for helium in the optical spectra, our models cannot rule out small
amounts of helium. Mor... | 1995-10-13 | 2015-06-24 | [
"astro-ph"
] | E. Baron, P. H. Hauschildt, D. Branch, R. P. Kirshner, and A. V.
Filippenko |
astro-ph/9510072 | Looking for $\Lambda$ with the Rees-Sciama Effect | In models with a cosmological constant, a significant component of the large
scale cosmic microwave background (CMB) anisotropy is produced at rather low
redshifts, z < 1. In these models, the gravitational potential perturbations
begin to evolve at late times. Photons passing through these time varying
potentials aqui... | 1995-10-13 | 2009-07-09 | [
"astro-ph",
"hep-ph"
] | Robert G. Crittenden and Neil Turok (Princeton University) |
astro-ph/9510068 | On Gravitational Collapse in the Nonsymmetric Gravitational Theory | The analytical structure of the difference between the static vacuum solution
in the nonsymmetric gravitational theory (NGT) and the Schwarzschild solution
of Einstein's gravitational theory (EGT) is studied. It is proved that a smooth
matching of the solutions does not exist in the range $0 < r \leq 2M$, for any
non-z... | 1995-10-13 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | J. W. Moffat and I. Yu. Sokolov |
astro-ph/9510065 | Warm absorber, reflection and Fe K line in the X-ray spectrum of IC
4329A | Results from the X-ray spectral analysis of the ASCA PV phase observation of
the Seyfert 1 galaxy IC 4329A are presented. We find that the 0.4 - 10 keV
spectrum of IC 4329A is best described by the sum of a steep ($\Gamma \sim
1.98$) power-law spectrum passing through a warm absorber plus a strong
reflection component ... | 1995-10-12 | 2009-10-28 | [
"astro-ph"
] | M. Cappi, T. Mihara, M. Matsuoka (RIKEN-Japan), K. Hayashida (Osaka
University-Japan), K.A. Weaver (Johns Hopkins University-USA) and C. Otani
(RIKEN-Japan) |
astro-ph/9510066 | Limits on diffusive shock acceleration in dense and incompletely ionised
media | The limits imposed on diffusive shock acceleration by upstream ion-neutral
Alfven wave damping, and by ionisation and Coulomb losses of low energy
particles, are calculated. Analytic solutions are given for the steady upstream
wave excitation problem with ion-neutral damping and the resulting escaping
upstream flux cal... | 1995-10-12 | 2008-02-03 | [
"astro-ph"
] | L O'C Drury (Dublin Institute for Advanced Studies, Dublin, Ireland),
P Duffy, J G Kirk (MPI fuer Kernphysik, Heidelberg, Germany) |
astro-ph/9510067 | Dynamical Constraints on the Formation of Elliptical Galaxies | Recent work on the construction of spherical, Axisymmetric and triaxial
dynamical models for elliptical galaxies is reviewed briefly, including their
role in providing evidence for dark halos and central black holes. The
different orbital structures and shapes of low-mass and giant elliptical
galaxies provide essential... | 1995-10-12 | 2007-05-23 | [
"astro-ph"
] | P. T. de Zeeuw and C. M. Carollo |
astro-ph/9510060 | A New Method for Obtaining Binary Pulsar Distances and its Implications
for Tests of General Relativity | We demonstrate how measuring orbital period derivatives can lead to more
accurate distance estimates and transverse velocities for some nearby binary
pulsars. In many cases this method will estimate distances more accurately than
is possible by annual parallax, as the relative error decreases as t^-5/2.
Unfortunately, ... | 1995-10-11 | 2009-10-28 | [
"astro-ph"
] | J. F. Bell and M. Bailes |
astro-ph/9510063 | Microlensing of disk sources | We analyse the effects on the predictions for the microlensing searches
toward the Galactic bulge coming from the fact that not all the stars monitored
belong to the bulge itself, but that a non--negligible fraction of them
actually are in the Galactic disk.
The different distribution and motions of these disk stars ... | 1995-10-11 | 2009-10-28 | [
"astro-ph"
] | S. Mollerach and E. Roulet |
astro-ph/9510064 | Is the X-ray spectrum of the Seyfert 2 galaxy NGC5252 intrinsically
flat? | The first X-ray observation of the Seyfert 2 galaxy NGC5252 is reported. ASCA
collected $\sim 4000$ photons/detector enough to perform an accurate spectral
analysis of this source. The luminosity of NGC5252 is L$_{\rm X}$(0.7-10 keV)
$\simeq 2.6 \times 10^{43}$ erg s$^{-1}$, typical of a Seyfert 1 galaxy. A
simple desc... | 1995-10-11 | 2009-10-28 | [
"astro-ph"
] | M. cappi, T. Mihara, M. Matsuoka (RIKEN-Japan), W. Brinkmann, M. A.
Prieto (MPE-FRG) and G.G.C. Palumbo (University of Bologna-Italy) |
astro-ph/9510061 | The Current Star Formation Rate of the Local Universe | The Universidad Complutense de Madrid (UCM) Survey is a long-term project
aiming at finding and analysing star-forming galaxies detected by their
H$\alpha$ emission in Schmidt objective-prism plates. The instrumental set-up
limits the volume of the Universe surveyed to a redshift $z\lesssim0.045$. So
far we have discov... | 1995-10-11 | 2009-10-28 | [
"astro-ph"
] | J. Gallego and J. Zamorano (University Complutense of Madrid), A.
Aragon-Salamanca (Institute of Astronomy Cambridge), M. Rego (University
Complutense of Madrid) |
astro-ph/9510062 | A Catalog of Digital Images of 113 Nearby Galaxies | We present a digital catalog of images of 113 galaxies in this paper. These
galaxies are all nearby, bright, large and well resolved. All images were
recorded with charge coupled devices (CCDs) at the Palomar Observatory with the
1.5 meter telescope and at the Lowell Observatory with the 1.1 meter telescope.
At Palomar... | 1995-10-11 | 2010-04-06 | [
"astro-ph"
] | Zsolt Frei, Puragra Guhathakurta, James E. Gunn and J. Anthony Tyson |
astro-ph/9510057 | Cosmological Implications of Galaxy Cluster Evolution | We analyze with hydrodynamical simulations the evolution of galaxy clusters
in a cosmological environment. Power ratios (Buote \& Tsai 1995) are used to
quantitatively relate cluster morphologies to their dynamical states. The
simulated clusters follow the same ``evolutionary track'' obeyed by a sample of
low-redshift ... | 1995-10-10 | 2015-06-24 | [
"astro-ph"
] | John C. Tsai (CITA) and David A. Buote (MIT) |
astro-ph/9510056 | Averaging inhomogeneous Newtonian cosmologies | Idealizing matter as a pressureless fluid and representing its motion by a
peculiar--velocity field superimposed on a homogeneous and isotropic Hubble
expansion, we apply (Lagrangian) spatial averaging on an arbitrary domain $\cal
D$ to the (nonlinear) equations of Newtonian cosmology and derive an exact,
general equat... | 1995-10-10 | 2011-09-29 | [
"astro-ph",
"gr-qc"
] | Thomas Buchert and Juergen Ehlers |
astro-ph/9510055 | Standard Cosmology and the BATSE Number vs. Peak Flux Distribution | The observed 2B BATSE distribution is consistent with the faintest GRBs in
our sample originating from a redshift of Zmax ~ 0.8-3.0 (90\%), with the most
likely values in the range of 1.0-2.2, and is largely insensitive to Omega for
models with no evolution. To constrain the model parameter Omega to the range
0.1-1.0 u... | 1995-10-10 | 2015-06-24 | [
"astro-ph"
] | Robert Rutledge, Lam Hui, Walter H.G. Lewin (MIT) |
astro-ph/9510054 | Intergalactic Hydrogen Clouds at Low-Redshift: Connections To Voids And
Dwarf Galaxies | We provide new post-COSTAR data on one sightline (Mrk 421) and updated data
from another (I Zw 1) from our Hubble Space Telescope (HST) survey of
intergalactic Lyman-alpha clouds located along sightlines to four bright
quasars passing through well-mapped galaxy voids (16,000 km/s pathlength) and
superclusters (18,000 k... | 1995-10-10 | 2007-05-23 | [
"astro-ph"
] | J. Michael Shull, John T. Stocke and Steve Penton (Center for
Astrophysics and Space Astronomy, Department of Astrophysical, Planetary, and
Atmospheric Sciences, University of Colorado, Boulder CO) |
astro-ph/9510058 | Mass Estimates of X-Ray Clusters | We use cosmological gas dynamic simulations to investigate the accuracy of
galaxy cluster mass estimates based on X-ray observations. The experiments
follow the formation of clusters in different cosmological models and include
the effects of gravity, pressure gradients, and hydrodynamical shocks. A subset
of our ensem... | 1995-10-10 | 2009-10-28 | [
"astro-ph"
] | August E. Evrard (University of Michigan Department of Physics),
Christopher A. Metzler (NASA/Fermilab Astrophysics Center), and Julio F.
Navarro (Steward Observatory, University of Arizona) |
astro-ph/9510059 | The Role of Time in Physical Cosmology | Recent advances in observational cosmology are changing the way we view the
nature of time. In general relativity, the freedom in choosing a time
hypersurface has hampered the implementation of the theory. Fortunately,
Hamilton-Jacobi theory enables one to describe all time hypersurfaces on an
equal footing. Using an e... | 1995-10-10 | 2007-05-23 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | D. S. Salopek |
astro-ph/9510052 | Quantifying the Fragility of Galactic Disks in Minor Mergers | We perform fully self-consistent stellar dynamical simulations of the
accretion of a companion ("satellite") galaxy by a large disk galaxy to
investigate the interaction between the disk, halo, and satellite components of
the system during a merger. Our fiducial encounter begins with a satellite in a
prograde, circular... | 1995-10-09 | 2009-10-28 | [
"astro-ph"
] | Ian R. Walker, J. Christopher Mihos, and Lars Hernquist (UC Santa
Cruz) |
astro-ph/9510053 | Formation of Massive Counterrotating Disks in Spiral Galaxies | We present results of numerical simulations of the formation of a massive
counterrotating gas disk in a spiral galaxy. Using a hierarchical tree gravity
solver combined with a sticky-particle gas dissipation scheme for our
simulations, we have investigated three mechanisms: episodic and continuous gas
infall, and a mer... | 1995-10-09 | 2016-08-30 | [
"astro-ph"
] | Aniruddha R. Thakar and Barbara S. Ryden (Ohio State University) |
astro-ph/9510051 | Galaxy Number Counts | In these Lectures Notes I re-visit the problem of the deep number counts as a
viable method to (1) study the evolution of the galaxy population in the past
and (2) determine the value of the deceleration parameter $q_0$. After a brief
description of the basic concepts needed to model the counts, we show that
simple lum... | 1995-10-09 | 2007-05-23 | [
"astro-ph"
] | Ana Campos (Dept. Physics, U. Durham) |
astro-ph/9510049 | The Nonlinear Redshift Space Power Spectrum: Omega from Redshift Surveys | We examine the anisotropies in the power spectrum by the mapping of real to
redshift space. Using the Zel'dovich approximation, we obtain an analytic
expression for the nonlinear redshift space power spectrum in the distant
observer limit. For a given unbiased galaxy distribution in redshift space, the
anisotropies in ... | 1995-10-08 | 2016-06-08 | [
"astro-ph"
] | K.B. Fisher, A. Nusser |
astro-ph/9510046 | A Theory of Extrasolar Giant Planets | We present a broad suite of models of extrasolar giant planets (EGP's),
ranging in mass from 0.3 to 15 Jupiter masses. The models predict luminosity
(both reflected and emitted) as a function of age, mass, deuterium abundance
and distance from parent stars of various spectral type. We also explore the
effects of helium... | 1995-10-08 | 2009-10-28 | [
"astro-ph"
] | D. Saumon, W.B. Hubbard, A. Burrows, T. Guillot, J.I. Lunine, and G.
Chabrier |
astro-ph/9510047 | Galaxies at z=2: extensions around radio-quiet QSOs | We have been conducting an imaging survey to detect host galaxies of
radio-quiet QSOs at high redshift (z = 2), in order to compare them with those
of radio-loud objects. Six QSOs were observed in the R passband with the
auxiliary port of the 4.2m WHT of the {\it Observatorio de Roque de los
Muchachos} indir August 199... | 1995-10-08 | 2007-05-23 | [
"astro-ph"
] | I. Aretxaga, B.J. Boyle, R.J. Terlevich |
astro-ph/9510045 | Detection of Massive Forming Galaxies at Redshifts Greater than One | The complex problem of when and how galaxies formed has not until recently
been susceptible of direct attack. It has been known for some time that the
excessive number of blue galaxies counted at faint magnitudes implies that a
considerable fraction of the massive star formation in the universe occurred at
z < 3, but, ... | 1995-10-08 | 2009-10-28 | [
"astro-ph"
] | Lennox L. Cowie, Esther M. Hu, and Antoinette Songaila (Univ. of
Hawaii, IfA) |
astro-ph/9510050 | Lensing by Distant Clusters: HST Observations of Weak Shear in the Field
of 3C324 | We present the detection of weak gravitational lensing in the field of the
radio galaxy 3C324 (z=1.206) using deep HST imaging. ~From an analysis of the
shapes of faint R=24.5-27.5 galaxies in the field we measure a weak, coherent
distortion centered close to the radio source. This shear field most likely
arises from g... | 1995-10-08 | 2009-10-28 | [
"astro-ph"
] | Ian Smail & Mark Dickinson |
astro-ph/9510048 | The Core of Cluster-Lenses | The gravitational lensing of faint background galaxies by rich clusters is
emerging as a very efficient method to constrain both the mass distribution of
cluster of galaxies and probe the statistical properties of faint background
galaxies. We review here the results concerning the core of cluster lenses,
where recent ... | 1995-10-08 | 2007-05-23 | [
"astro-ph"
] | J.-P. Kneib, G. Soucail |
astro-ph/9510042 | Small-Scale Power Spectrum and Correlations in LCDM | Cosmological models with a positive cosmological constant and $\Omega_0<1$
have a number of attractive features. A larger Hubble constant, which can be
compatible with the recent HST estimate, and a large fraction of baryon density
in galaxy clusters make them current favorites. Early galaxy formation also is
considere... | 1995-10-06 | 2007-05-23 | [
"astro-ph"
] | Anatoly Klypin, Joel Primack, Jon Holtzman |
astro-ph/9510040 | Detection of the Angular Correlation of Faint X-ray Sources | We have analyzed a set of deep ROSAT observations with a total sky coverage
of 40 square degrees to search for clustering of faint X-ray sources. Using the
resulting catalog of discrete X-ray sources, we detect, for the first time in
X-rays, a positive correlation on angular scales of 0.5'-10'. When corrected
for a bia... | 1995-10-06 | 2009-10-28 | [
"astro-ph"
] | A. Vikhlinin and W. Forman |
astro-ph/9510038 | An Incoherent $\alpha-\Omega$ Dynamo in Accretion Disks | We use the mean-field dynamo equations to show that an incoherent alpha
effect in mirror-symmetric turbulence in a shearing flow can generate a large
scale, coherent magnetic field. We illustrate this effect with simulations of a
few simple systems. In accretion disks, this process can lead to axisymmetric
magnetic dom... | 1995-10-06 | 2015-06-24 | [
"astro-ph"
] | Ethan T. Vishniac (U. Texas) and Axel Brandenburg (Nordita) |
astro-ph/9510041 | Higher-Order Gravitational Perturbations of the Cosmic Microwave
Background | We study the behavior of light rays in perturbed Robertson-Walker
cosmologies, calculating the redshift between an observer and the surface of
last scattering to second order in the metric perturbation. At first order we
recover the classic results of Sachs and Wolfe, and at second order we
delineate the various new ef... | 1995-10-06 | 2008-11-26 | [
"astro-ph",
"gr-qc"
] | Ted Pyne and Sean M. Carroll |
astro-ph/9510034 | Galaxy Harassment and the Evolution of Clusters of Galaxies | Disturbed spiral galaxies with high rates of star formation pervaded clusters
of galaxies just a few billion years ago, but nearby clusters exclude spirals
in favor of ellipticals. ``Galaxy harassment" (frequent high speed galaxy
encounters) drives the morphological transformation of galaxies in clusters,
provides fuel... | 1995-10-06 | 2009-10-28 | [
"astro-ph"
] | Ben Moore, Neal Katz, George Lake, Alan Dressler & Augustus Oemler |
astro-ph/9510039 | Evaporation of cosmological quark drops and relativistic radiative
transfer | We discuss the results of a full relativistic treatment of the hydrodynamics
of disconnected quark regions during the final stages of the cosmological
quark-hadron transition. In this study, which represents a further development
of a previous analysis of the evaporation of cosmological quark drops, the
effects of long... | 1995-10-06 | 2009-10-28 | [
"astro-ph",
"hep-ph"
] | L. Rezzolla and J. C. Miller |
astro-ph/9510043 | Femtolensing and Picolensing by Axion Miniclusters | Non-linear effects in the evolution of the axion field in the early Universe
may lead to the formation of gravitationally bound clumps of axions, known as
``miniclusters.'' Minicluster masses and radii should be in the range $M_{\rm
mc}\sim10^{-12} M_\odot$ and $R_{\rm mc} \sim 10^{10}$cm, and in plausible
early-Univer... | 1995-10-06 | 2009-10-28 | [
"astro-ph",
"hep-ph"
] | E. W. Kolb and I. I. Tkachev |
astro-ph/9510044 | Compact Objects without Events Horizon | It is shown that gravitational theory allows stable equilibrium
configurations of the degenerated Fermi gas, whose masses are many times as
large as the Sun. They have no events horizon at the Schwarzchild radius from
the center. They are objects with low luminosity and they are new candidates to
Dark Matter in the Uni... | 1995-10-06 | 2008-02-03 | [
"astro-ph"
] | L. V. Verozub |
astro-ph/9510036 | The Acceleration of Electrons In Radio Supernova SN1986J | We propose a model for radio supernovae (RSN) based on the synchrotron
emission from relativistic electrons which are diffusively accelerated at the
expanding supernova shock. This model was originally developed for application
to the optically thin emission observed from SN1987A. Here we generalise it by
including the... | 1995-10-06 | 2011-05-23 | [
"astro-ph"
] | Lewis Ball (Research Centre for Theoretical Astrophysics, University
of Sydney, NSW, Australia) J.G. Kirk (Max-Planck-Institut fuer Kernphysik,
Heidelberg, Germany) |
astro-ph/9510035 | Advanced Statistical Methods for Large-Scale Structure Studies | These Lecture Notes are devoted to an introductory description of some of the
most widely applied statistical methods for the analysis of the Large-Scale
Structure (LSS) of the Universe. Rather than providing technical details about
the implementation of such methods, I concentrate more on their significance
and on the... | 1995-10-06 | 2007-05-23 | [
"astro-ph"
] | Stefano Borgani |
astro-ph/9510027 | The debate of galaxy correlations and its theoretical implications | We discuss the problem of galaxy correlations by considering the various
methods by which this information can be obtained. We focus in particular on
the volume limited three dimensional samples and discuss a new way to increase
the scale of their statistical validity. From our previous results and the most
recent ones... | 1995-10-05 | 2007-05-23 | [
"astro-ph"
] | L. Pietronero, M. Montuori and F. Sylos Labini |
astro-ph/9510030 | Cosmic Error and the Statistics of Large Scale Structure | We examine the errors on counts in cells extracted from galaxy surveys. The
measurement error, related to the finite number of sampling cells, is
disentangled from the ``cosmic error'', due to the finiteness of the survey.
Using the hierarchical model and assuming locally Poisson behavior, we
identified three contribut... | 1995-10-05 | 2009-10-28 | [
"astro-ph"
] | Istv\'an Szapudi and St\'ephane Colombi |
astro-ph/9510031 | Analysis of the Polarization and Flux Spectra of SN1993J | Synthetic polarization and flux spectra are presented for aspherical,
electron scattering-dominated photospheres of Type II supernovae (SN II) in
general and the specific case of SN 1993J using a Monte Carlo scheme.
The observed luminosity of a Type II supernova depends on the unknown
inclination angle. Spectral anal... | 1995-10-05 | 2016-08-30 | [
"astro-ph"
] | P. Hoeflich, J.C. Wheeler, D.C. Hines, S.R. Trammell |
astro-ph/9510028 | Advection-Dominated Models of Luminous Accreting Black Holes | It has been found that a class of optically-thin two-temperature
advection-dominated accretion solutions explains many observations of
low-luminosity accreting black holes. Here it is shown that these models give a
satisfactory description also of higher luminosity systems, provided the
viscosity parameter $\alpha$ is ... | 1995-10-05 | 2009-10-28 | [
"astro-ph"
] | Ramesh Narayan |
astro-ph/9510026 | Variations in Solar Luminosity from Time Scales of Minutes to Months | We present the power spectrum of solar irradiance during 1985 and 1987
obtained from the ACRIM project from time scales of minutes to months. At low
frequency the spectra are Lorentzian. At higher frequencies they are
proportional to $f^{-{1/2}}$. A linear, stochastic model of the turbulent heat
transfer between the gr... | 1995-10-05 | 2009-10-28 | [
"astro-ph"
] | Jon D. Pelletier (Geological Sciences, Cornell U.) |
astro-ph/9510029 | Metric Perturbations from Quantum Tunneling in Open Inflation | We study the effect that quantum fluctuations produced during the nucleation
of a single-bubble open inflationary universe have on the amplitude of
temperature anisotropies in the microwave background. We compute the instanton
action for the quantum tunneling between the false and true vacua in open
inflation models an... | 1995-10-05 | 2016-08-24 | [
"astro-ph",
"gr-qc"
] | Juan Garcia-Bellido |
astro-ph/9510032 | Spatial Distribution of the Starbursts in Post-Starburst Coma Cluster
Galaxies | We present long slit spectra and multi-color CCD images which demonstrate
that the strong star formation episodes that occurred in the post-starburst
galaxies in the Coma Cluster and two field galaxies were not restricted to the
central regions of the galaxies. Rather, the remnant young stars from the
starbursts are fo... | 1995-10-05 | 2009-10-28 | [
"astro-ph"
] | Nelson Caldwell, James Rose, Marijn Franx, and Andrew Leonardi |
astro-ph/9510033 | The Ages of Starbursts in Post-Starburst Galaxies | We present a new technique for accurately determining the ages of starbursts
in post-starburst galaxies. In particular, it uses the strength of the Ca II H
+ H$\epsilon$ absorption feature relative to that of Ca II K to separate the
effects of burst strength from burst age in a spectrum comprised of a
post-starburst po... | 1995-10-05 | 2009-10-28 | [
"astro-ph"
] | Andrew J. Leonardi and James A. Rose |
astro-ph/9510037 | Gravitational Dynamics in an Expanding Universe | The dynamical evolution of collisionless particles in an expanding background
is described. After discussing qualitatively the key features, the
gravitational clustering of collisionless particles in an expanding universe is
modelled using some simple physical ideas. I show that it is indeed possible to
understand the ... | 1995-10-05 | 2007-05-23 | [
"astro-ph"
] | T.Padmanabhan |
astro-ph/9510018 | The determination of $H_O$ by using the TF relation : About particular
selection effects | This paper completes the statistical modeling of the Hubble flow when a
Tully-Fisher type relation is used for estimating the absolute magnitude
$M\approx a\,p+b$ from a line width distance indicator $p$. Our investigation
is performed with the aim of providing us with a full understanding of
statistical biases due to ... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | R. Triay, S. Rauzy and M. Lachi\`eze-Rey |
astro-ph/9510021 | Three-Dimensional Hydrodynamic Bondi-Hoyle Accretion. V. Specific Heat
Ratio 1.01, Nearly Isothermal Flow | We investigate the hydrodynamics of three-dimensional classical Bondi-Hoyle
accretion. A totally absorbing sphere of different sizes (1, 0.1 and 0.02
accretion radii) moves at different Mach numbers (0.6, 1.4, 3.0 and 10)
relative to a homogeneous and slightly perturbed medium, which is taken to be
an ideal, nearly iso... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | M. Ruffert (Max-Planck-Institut fuer Astrophysik) |
astro-ph/9510025 | OY Car in Outburst: Balmer emission from the red star and the gas stream | We present observations of OY Car, obtained with the Anglo-Australian
telescope, during a normal outburst in 1991. Two sinusoidal components are
resolved in the Hbeta trailed spectra and we determine the location of the
narrow component to be on the secondary star with a maximum contributed flux of
~2.5 per cent to the... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | E.T.Harlaftis, T. R. Marsh |
astro-ph/9510022 | X-ray reflection in Galactic Black Hole Candidates: smeared edge
profiles and resonant Auger destruction | We consider the spectra of Thomson-thick, geometrically-thin accretion discs
around Galactic black hole candidates in the reflection model and compute their
iron K edges and iron K$\alpha$ lines. We compare the smeared iron K edge
profiles that we compute with observation and find them to be a satisfactory
description ... | 1995-10-04 | 2015-06-24 | [
"astro-ph"
] | R.R. Ross, A.C. Fabian, W.N. Brandt |
astro-ph/9510016 | The Nature of the Galactic Dark Matter | Disk-halo models of the Galaxy and LMC are constructed and used to analyse
the microlensing data-set. Deflectors in the LMC bar, disk and halo provide an
optical depth to microlensing of $\sim 2 \times 10^{-7}$. Deflectors in the
Galactic disk and halo contribute $\sim 5 \times 10^{-7}$. The extent,
flattening and velo... | 1995-10-04 | 2016-06-08 | [
"astro-ph"
] | N.W.Evans |
astro-ph/9510015 | Multifrequency Observations of Gamma-Ray Burst | Neither a flaring nor a quiescent counterpart to a gamma-ray burst has yet
been convincingly identified at any wavelength region. The present status of
the search for counterparts of classical gamma-ray bursts is given. Particular
emphasis is put on the search for flaring counterparts, i.e. emission during or
shortly a... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | J. Greiner |
astro-ph/9510014 | Power spectrum for fractal distributions | We study the behaviour of the power spectrum (PS) in the case of fractal
structures. We show that in this case the main observational features of the
PS, the large scale flattening and the scaling of the amplitude with sample
depth, are related to finite size effects, due to the fractal nature of galaxy
distribution in... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | F. Sylos Labini and L. Amendola |
astro-ph/9510020 | The Tully-Fisher relation : Correspondence between the Inverse and
Direct approaches | In a previous paper, we have demonstrated the importance to define a
statistical model describing the observed linear correlation between the
absolute magnitude $M$ and the log line width distance indicator $p$ of
galaxies (the Tully-Fisher relation). As long as the same statistical model is
used during the calibration... | 1995-10-04 | 2007-05-23 | [
"astro-ph"
] | S. Rauzy and R. Triay |
astro-ph/9510024 | Stellar Equilibrium and Gravitational Collapse in the Nonsymmetric
Gravitational Theory | We establish the formalism in the nonsymmetric gravitational theory (NGT) for
stellar equilibrium and gravitational collapse. We study the collapse of a
pressureless, spherically symmetric dust cloud. By assuming that the interior
solution is smoothly matched at the surface of the star to the quasi-static,
spherically ... | 1995-10-04 | 2008-02-03 | [
"astro-ph",
"gr-qc"
] | J. W. Moffat |
astro-ph/9510019 | Cosmic Microwave Background Anisotropies from the Rees-Sciama Effect in
$\Omega_{0} \le 1$ Universes | We investigate the imprint of nonlinear matter condensations on the Cosmic
Microwave Background (CMB) in $\Omega_{0}<1$ cold dark matter (CDM) model
universes. We consider simulation domains ranging from $120h^{-1}$ Mpc to
$360h^{-1}$ Mpc in size. We concentrate on the secondary temperature
anisotropies induced by time... | 1995-10-04 | 2008-11-26 | [
"astro-ph"
] | Robin Tuluie, Pablo Laguna (Penn State) and Peter Anninos (NCSA) |
astro-ph/9510017 | Wavelet Analysis of Inhomogeneous Data with Application to the Cosmic
Velocity Field | In this article we give an account of a method of smoothing spatial
inhomogeneous data sets by using wavelet reconstruction on a regular grid in an
auxilliary space onto which the original data is mapped. In a previous paper by
the present authors, we devised a method for inferring the velocity potential
from the radia... | 1995-10-04 | 2009-10-28 | [
"astro-ph"
] | S. Rauzy, M. Lachi\`eze-Rey and R.N. Henriksen |
astro-ph/9510023 | Microlensing By a Prolate All-Macho Halo | It is widely believed that dark matter halos are flattened, that is closer to
oblate than prolate. The evidence cited is based largely on observations of
galaxies which do not look anything like our own and on numerical simulations
which use ad hoc initial conditions. Given what we believe to be a ``reasonable
doubt'' ... | 1995-10-04 | 2009-10-28 | [
"astro-ph"
] | Gilbert P. Holder, Lawrence M. Widrow |
astro-ph/9510013 | On the interpretation of the He II absorption in the line of sight of
Q0302-003 | We point out the peculiarities of the line of sight of Q0302-003 which was
recently used to estimate the He II opacity at $z \sim 3.285$. This line of
sight contains a large void in Lyman $\alpha$ clouds, in the region used for
the He II opacity observation, and the void is thought to be caused by the
ionizing radiatio... | 1995-10-04 | 2015-06-24 | [
"astro-ph"
] | Biman B. Nath and Shiv K. Sethi |
astro-ph/9510010 | Chaos, Fractals and Inflation | In order to draw out the essential behavior of the universe, investigations
of early universe cosmology often reduce the complex system to a simple
integrable system. Inflationary models are of this kind as they focus on simple
scalar field scenarios with correspondingly simple dynamics. However, we can be
assured that... | 1995-10-03 | 2009-10-28 | [
"astro-ph",
"gr-qc",
"hep-th"
] | Neil J. Cornish (CWRU) and Janna J. Levin (CfPA, Berkeley) |
astro-ph/9510008 | Hydrodynamic accretion onto rapidly rotating Kerr black hole | Bondi type hydrodynamic accretion of the surrounding matter onto Kerr black
hole with an arbitrary rotational parameter is considered. The effects of
viscosity, thermal conductivity and interaction with radiation field are
neglected. The black hole is supposed to be at rest with respect to matter at
infinity. The flow ... | 1995-10-03 | 2015-06-24 | [
"astro-ph"
] | Vladimir I.Pariev (P.N.Lebedev Physical Institute, Moscow) |
astro-ph/9510012 | Weak Lensing and the Sloan Digital Sky Survey | While the strategy for the first applications of weak lensing has been to
``go deep'' it is equally interesting to use one's telescope time to instead
``go wide''. The Sloan Survey (SDSS) provides a natural framework for a very
wide area weak lensing survey. | 1995-10-03 | 2011-04-12 | [
"astro-ph"
] | Albert Stebbins, Tim Mckay, and Joshua A. Frieman |
astro-ph/9510007 | High-Energy Spectral Complexity from Thermal Gradients in Black Hole
Atmospheres | We show that Compton scattering of soft photons with energies near 100 eV in
thermally stratified black-hole accretion plasmas with temperatures in the
range 100 keV - 1 MeV can give rise to an X-ray spectral hardening near 10 keV.
This could produce the hardening observed in the X-ray spectra of black holes,
which is ... | 1995-10-03 | 2009-10-28 | [
"astro-ph"
] | J. G. Skibo and C. D. Dermer (Naval Research Laboratory) |
astro-ph/9510009 | Strong X-ray Absorption in a BALQSO: PHL5200 | We present $\it {ASCA}$ observations of the z=1.98 prototype BALQSO: PHL5200.
The source was detected in both SIS and GIS. A power-law spectrum ($\alpha_E =
0.6^{+0.9}_{-0.6}$) with large intrinsic absorption (N$_H = 1.3^{+2.3}_{-1.1}
\times 10^{23}$ cm$^{-2}$) best describes the spectrum. Excess column density
over th... | 1995-10-03 | 2007-05-23 | [
"astro-ph"
] | Smita Mathur, Martin Elvis & K. P. Singh |
astro-ph/9510011 | Fragmentation in a centrally condensed protostar | Hydrodynamical calculations in three space dimensions of the collapse of an
isothermal, centrally condensed, rotating 1 M\sol protostellar cloud are
presented. A numerical algorithm involving nested subgrids is used to resolve
the region where fragmentation occurs in the central part of the protostar. A
previous calcul... | 1995-10-03 | 2007-05-23 | [
"astro-ph"
] | Andi Burkert, Peter Bodenheimer |
astro-ph/9510006 | Optical Detection of the Hidden Nuclear Engine in NGC~4258 | The sub-parsec masing disk recently found to be orbiting a central mass of
$\sim3.6\times10^7$~\msun\ in the Seyfert/LINER galaxy NGC~4258 provides the
most compelling evidence to date for the existence of a massive black hole in
the nucleus of a galaxy. The disk is oriented nearly edge-on %($\bf i=83$\deg)
and the X-r... | 1995-10-03 | 2009-10-28 | [
"astro-ph"
] | Belinda J. Wilkes (CfA), Gary D. Schmidt (Steward Observatory), Paul
S. Smith (Steward Observatory), Smita Mathur (CfA), Kim K. McLeod (CfA) |
astro-ph/9510001 | Kinematics of ionized gas associated with the radio nucleus and lobes in
the active galaxy IRAS 04210+0400 | We have used high resolution longslit spectroscopy to investigate the ionized
gas in the active galaxy IRAS 04210+0400 and its association with the radio
structure.
We suggest that two of the ionized components are associated with the central
double radio source and observe that the relative positions of these compon... | 1995-10-02 | 2015-06-24 | [
"astro-ph"
] | A.J. Holloway (Manchester), W. Steffen (Manchester), A. Pedlar (NRAL),
D.J. Axon (NRAL,STSCI), J.E. Dyson (Manchester), J. Meaburn (Manchester) and
C.N. Tadhunter (Sheffield) |
astro-ph/9510005 | Spectral Properties of Accretion Disks Around Galactic and Extragalactic
Black Holes | We study the spectral properties of a very general class of accretion disks
which can be decomposed into three distinct components apart from a shock at
$r=r_s$: (1) An optically thick Keplerian disk on the equatorial plane
($r>r_s$), (2) A sub-Keplerian optically thin halo above and below this
Keplerian disk $r>r_s$ a... | 1995-10-02 | 2009-10-28 | [
"astro-ph"
] | Sandip K. Chakrabarti and Lev G. Titarchuk |
astro-ph/9510003 | The Neutral Hydrogen Disk of Arp 10 (=VV 362) : A Non-equilibrium Disk
Associated with a Galaxy with Rings and Ripples | We present VLA \ion{H}{1} and optical spectra of the peculiar galaxy Arp~10.
Originally believed to be an example of a classical colliding ring galaxy with
multiple rings, the new observations show a large disturbed neutral hydrogen
disk extending 2.7 times the radius of the bright optical ring. We also present
evidenc... | 1995-10-02 | 2009-10-28 | [
"astro-ph"
] | V. Charmandaris and P. N. Appleton (Iowa State Univ.) |
astro-ph/9510004 | Evidence for a Spectroscopic Sequence Among SNe Ia | In this Letter we present evidence for a spectral sequence among Type Ia
supernovae (SNe Ia). The sequence is based on the systematic variation of
several features seen in the near-maximum light spectrum. This sequence is
analogous to the recently noted photometric sequence among SNe Ia which shows a
relationship betwe... | 1995-10-02 | 2009-07-28 | [
"astro-ph"
] | Peter Nugent, Mark Phillips, E. Baron, David Branch, and Peter
Hauschildt |
astro-ph/9510002 | Deficit of Far-Infrared [CII] Line Emission toward the Galactic Center | We have observed the [CII] 158 micron line emission from the Galactic plane
(-10 deg < l < 25 deg, |b| <= 3 deg) with the Balloon-borne Infrared Carbon
Explorer (BICE). The observed longitudinal distribution of the [CII] line
emission is clearly different from that of the far-infrared continuum emission;
the Galactic c... | 1995-10-02 | 2009-10-28 | [
"astro-ph"
] | Takao Nakagawa, Yasuo Doi, Yukari Yamashita Yui, Haruyuki Okuda, Kenji
Mochizuki, and Hiroshi Shibai (The Institute of Space and Astronautical
Science), Tetsuo Nishimura and Frank J. Low (Steward Observatory, University
of Arizona) |
astro-ph/9509159 | ROSAT PSPC observations of Cygnus-A : X-ray spectra of the cooling flow
and hot spots | We present a {\it ROSAT} Position Sensitive Proportional Counter (PSPC)
observation of the powerful radio galaxy Cygnus-A. The X-ray emission in the
{\it ROSAT} band is dominated by thermal emission from the hot intracluster
medium of the associated cluster. Image deprojection confirms the existence of
a significant cl... | 1995-10-01 | 2015-06-24 | [
"astro-ph"
] | C.S. Reynolds, A.C. Fabian |
astro-ph/9509160 | Determination of the Hubble constant from observations of Cepheid
variables in the galaxy M96 | New Hubble Space Telescope observations of Cepheid variable stars in the
nearby galaxy M96 give a distance to the host galaxy group, Leo-I, of
11.6+/-0.8 Mpc. This value, used in conjunction with several reliable secondary
indicators of relative distance, constrains the distances to more remote galaxy
clusters, and yie... | 1995-10-01 | 2009-10-28 | [
"astro-ph"
] | N.R. Tanvir, T. Shanks, H.C. Ferguson, D.R.T. Robinson |
astro-ph/9509158 | Classical Mechanics without Absolute Space | A relative mechanics with no absolute space is shown to be equivalent to
Newtonian mechanics applied in a universe of zero net angular momentum. Closed
spaces in General Relativity have no angular momentum and shrivel to one point
as the mass-energy contained tends to zero, so obeying Mach's principle on the
origin of ... | 1995-10-01 | 2009-10-28 | [
"astro-ph"
] | D. Lynden-Bell and J. Katz |
astro-ph/9509155 | Population synthesis of X-ray sources at the Galactic center | We model the evolution of the selected types of X-ray sources (both with BHs
and NSs) for the star formation burst at the Galactic center. For the currently
assumed starburst age of 4-7 millions years, our results are consistent with
the recent {\it GRANAT} X-ray observations of the Galactic center and predict a
substa... | 1995-10-01 | 2007-05-23 | [
"astro-ph"
] | S.B. Popov, V.M. Lipunov, L.M. Ozernoy, K.A. Postnov, and M.E.
Prokhorov |
astro-ph/9509154 | Physics of the Very Early Universe | In this report of the workshop on `Physics of the Very Early Universe' held
at GR14, the recent status and open problems in a selected number of major
areas of interest are reviewed, focusing on attempts to develop a superstring
cosmology and on progress in understanding current theories of structure
formation. | 1995-10-01 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | Robert H. Brandenberger (Brown University) |
astro-ph/9509157 | The life-cycle of star formation in distant clusters | We analyse the detailed distribution of star-forming and post-starburst
members in three distant (z = 0.31) galaxy clusters in terms of evolutionary
sequences that incorporate secondary bursts of star formation on pre-existing
stellar populations. Using the number density of spectroscopically-confirmed
members on the E... | 1995-10-01 | 2015-06-24 | [
"astro-ph"
] | A. J. Barger, A. Aragon-Salamanca, R. S. Ellis, W. J. Couch, I. Smail,
and R. M. Sharples |
astro-ph/9509156 | The Nova-like Variables | We review optical observations and theoretical models of the non-magnetic
nova-like variables (UX UMa, VY Scl and SW Sex stars). A brief discussion of
the classification scheme is followed by a statistical overview of the observed
properties. The most important features of each of the sub-classes are then
reviewed, con... | 1995-10-01 | 2016-01-27 | [
"astro-ph"
] | V.S. Dhillon |
astro-ph/9509153 | NIR imaging and modeling of the core of M100 | High-resolution NIR and optical images are used to constrain a dynamical
model of the circumnuclear star forming (SF) region in the barred galaxy M100
(=NGC 4321). Subarcsecond resolution allowed us to distinguish important
morphological details which are easily misinterpreted when using images at
lower resolution. Sma... | 1995-09-29 | 2019-07-31 | [
"astro-ph"
] | J.H. Knapen (Montreal), R.F. Peletier (Kapteyn), I. Shlosman
(Lexington), J.E. Beckman (IAC Tenerife), C.H. Heller (Goettingen), and R.S.
de Jong (Durham) |
astro-ph/9509150 | A Simple Law for the Average Time History of Gamma-Ray Bursts and Their
Time Dilations | Individual gamma ray bursts (GRBs) have very diverse time behavior - from a
single pulse to a long complex sequence of chaotic pulses of different
timescales. I studied light curves of GRBs using data from the CGRO's BATSE
experiment and found that the average post-peak time history for a sample of
460 bursts obeys an ... | 1995-09-29 | 2009-10-28 | [
"astro-ph"
] | Boris E. Stern (Institute for Nuclear Research, Moscow, Russia, and
Stockholm Observatory, Sweden) |
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