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/9406003 | The Companion of M4a: A Planet or a Star? | The $\ddot P$ (Backer 1992, Backer et al. 1993, Thorsett et al. 1993)
observed for PSR~B1620-26 in the globular cluster M4 is most likely due to
external gravitational jerk from a bound companion. Solving for the $\ddot P$
observed, constrained by the observed $\dot P$, two natural solutions are a
jovian mass in a $\gt... | 1994-06-01 | 2007-05-23 | [
"astro-ph"
] | Steinn Sigurdsson |
astro-ph/9406001 | Imprints of Galaxy Clsutering Evolution on Delta T / T | The nonlinear evolution of matter clustering induces temperature anisotropies
in the cosmic microwave background. The fluctuations in temperature are
produced at a relatively low redshift, $z\simlt 10$, and consequently are not
affected by the uncertain reionization proccesses that occurred at earlier
epochs. The ampli... | 1994-06-01 | 2009-10-22 | [
"astro-ph"
] | Enrique Martinez- Gonzalez, Jose L. Sanz, Joseph Silk |
astro-ph/9406002 | Compton Scattering in Jets: A Mechanism for $\sim$ 0.4 and $\lsim$ 0.2
Mev Line Production | We show that gamma ray line emission at $\sim$0.4 MeV and $\lsim 0.2$ MeV can
be produced by Compton scattering of beamed radiation in the jets of Galactic
black hole candidates. This mechanism has the novel feature of not invoking the
presence of $e^+$--$e^-$ pairs. To produce the two lines we employ a symmetric
doubl... | 1994-06-01 | 2009-10-22 | [
"astro-ph"
] | J. G. Skibo, C. D. Dermer and R. Ramaty |
astro-ph/9405074 | Evolution in the Clustering of Galaxies to r = 26 (TAPIR GRP-390) | We present results for the two-point angular correlation function of galaxies
to a limiting magnitude of r=26. The final sample is 97% complete to r=26.0,
yielding 5730 galaxies over a 90.1 sq. arcmin field. The correlation function
for our faint galaxies can be parameterised by a power law, $A \theta^{-0.8}$,
in agree... | 1994-05-31 | 2015-06-24 | [
"astro-ph"
] | Tereasa G. Brainerd, Ian Smail, and Jeremy R. Mould |
astro-ph/9405070 | Observational Support for the Gurzadyan-Kocharyan Relation in Clusters
of Galaxies | We show that observational data for four Abell clusters of galaxies support
the Gur\-za\-dyan-Kocharyan relation between the Hausdorff dimension and the
dynamical properties of a galaxy system. The Hausdorff dimension is calculated
using the two-point correlation function, while the dynamical parameters are
estimated u... | 1994-05-31 | 2007-05-23 | [
"astro-ph"
] | Pierluigi Monaco |
astro-ph/9405073 | The Primordial Abundance of $^6$Li and $^9$be | Light element ($^6$Li, $^7$Li and $^9$Be) depletion isochrones for halo stars
have been calculated with standard stellar evolution models. These models
include the latest available opacities and are computed through the sub-giant
branch. If $^6$Li is not produced in appreciable amounts by stellar flares,
then the detec... | 1994-05-31 | 2009-10-22 | [
"astro-ph"
] | Brian Chaboyer |
astro-ph/9405071 | Ejection of Fragments in Supernova Explosions | Recent observations by the ROSAT X-ray satellite of the Vela supernova
remnant have revealed, in addition to the previously identified compact nebula,
a nearly circular emitting region with a radius of about 4 degrees. The Vela
pulsar is slightly off the center of this circular region, consistent with its
measured prop... | 1994-05-31 | 2007-05-23 | [
"astro-ph"
] | A. Loeb, F.A. Rasio, and J. Shaham |
astro-ph/9405069 | The EMSS catalog of X-ray-selected clusters of galaxies. I. An atlas of
CCD images of 41 distant clusters | An atlas of deep, wide-field R-band CCD images of a complete sample of
distant, X-ray-selected clusters of galaxies is presented. These clusters are
the 41 most distant (z>= 0.15) and most X-ray luminous (Lx >= 2x10**44 erg\s-1)
clusters in the Einstein Observatory Extended Medium Sensitivity Survey (EMSS)
catalog that... | 1994-05-31 | 2008-11-26 | [
"astro-ph"
] | I.M. Gioia and G.A. Luppino |
astro-ph/9405075 | Probing the Large-Scale Velocity Field with Clusters of Galaxies | What is the role of clusters of galaxies in probing the large-scale velocity
field of the universe? We investigate the distribution of peculiar velocities
of clusters of galaxies in the popular low-density ($\Omega=0.3$) flat
Cold-Dark-Matter (CDM) cosmological model, which best fits many large-scale
structure observat... | 1994-05-31 | 2009-10-22 | [
"astro-ph"
] | Neta A. Bahcall, Renyue Cen and Mirt Gramann (Princeton University
Observatory, Princeton, NJ) |
astro-ph/9405072 | Reionization and the Cosmic Microwave Background | If the COBE detection of CMB fluctuations is used to normalize the power
spectrum of primordial density fluctuations in a cold dark matter--dominated
universe, early reionization is likely to result in a substantial diminution of
primordial temperature fluctuations on degree scales. I argue that the
reionization may be... | 1994-05-31 | 2009-10-22 | [
"astro-ph"
] | Joseph Silk |
astro-ph/9405068 | Abundance Analysis and Origin of the Zeta Sculptoris Open Cluster | We have determined chemical abundances and radial velocities for stars in the
field of the zeta Sculptoris cluster. We find that the cluster metal deficiency
previously found from UBV photometry is too high; the cluster overall
metallicity, [Fe/H]=+0.24, is about 70% higher than the solar value. The
chemical abundance ... | 1994-05-30 | 2007-05-23 | [
"astro-ph"
] | Bengt Edvardsson, Bertil Pettersson, Maryam Kharrazi and Bengt
Westerlund |
astro-ph/9405067 | Hydrodynamics and High-Energy Physics of WR Colliding Winds | One of the main properties of Wolf-Rayet (WR) stars is a very intense outflow
of gas. No less than 40\% \ of WR stars belong to binary systems. Young massive
O and B stars are the secondary components of such systems. OB stars also have
an intense stellar wind.
If the intensities of the stellar winds of WR and OB sta... | 1994-05-29 | 2007-05-23 | [
"astro-ph"
] | Vladimir V. Usov |
astro-ph/9405064 | Neutrinos from the Sun: experimental results confronted with solar
models | For standard neutrinos, recent solar neutrino results together with the
assumption of a nuclearly powered Sun imply severe constraints on the
individual components of the total neutrino flux: \Phi_{Be}<0.7*10^9cm^-2 s^-1,
\Phi_{CNO}< 0.6*10^9 cm^-2 s^-1, and $64*10^9 cm^-2 s^-1< \Phi_{pp+pep} <
65*10^9 cm^-2 s^-1 (at 1... | 1994-05-27 | 2009-12-30 | [
"astro-ph",
"hep-ph"
] | Vittorio Castellani, Scilla Degl'innocenti, Gianni Fiorentini,
Marcello Lissia and Barbara Ricci |
astro-ph/9405066 | Accretion Rates in X--Ray Bursting Sources | We present estimates for the accretion rates in 13 X--ray bursting sources
which exhibit photospheric expansion, basing on theoretical models of
stationary, radiatively driven winds from neutron stars. The relatively high
values obtained, $\Mdot_{acc}\magcir 10^{-9} \MS$, are in accordance with
theoretical limits for u... | 1994-05-27 | 2009-10-22 | [
"astro-ph"
] | Iosif Lapidus, Luciano Nobili and Roberto Turolla |
astro-ph/9405065 | Winds from Neutron Stars and Strong Type I X--Ray Bursts | A model for stationary, radiatively driven winds from X--ray bursting neutron
stars is presented. General relativistic hydrodynamical and radiative transfer
equations are integrated from the neutron star surface outwards, taking into
account for helium nuclear burning in the inner, dense, nearly hydrostatic
shells. Rad... | 1994-05-27 | 2009-10-22 | [
"astro-ph"
] | Luciano Nobili, Roberto Turolla and Iosif Lapidus |
astro-ph/9405061 | Observation of [CI] toward the GL 2591 and W28 A2 Molecular Outflows | Molecular outflows associated with GL 2591 and W28 A2 were observed in the
492 GHz [CI] line. Upper limits are set on the [CI] emission in the extremely
high velocity line wings. These limits are discussed in terms of wind-driven
and jet-driven models of molecular outflows. | 1994-05-26 | 2009-10-22 | [
"astro-ph"
] | Choi, Evans, Jaffe, and Walker |
astro-ph/9405062 | Detection of Lens Candidates for the Double QSO Q2345+007 | Luminous objects associated with the 7.06\arcsec\ separation double quasar
Q2345+007 have, until now, escaped detection. In this letter we present the
results of the deepest known imaging of the region surrounding the quasar. The
total exposure times were 47600 seconds in B$_j$ (101 frames) and 32160 seconds
in R (82 f... | 1994-05-26 | 2009-10-22 | [
"astro-ph"
] | Philippe Fischer, J. Anthony Tyson, Gary M. Bernstein, and Puragra
Guhathakurta |
astro-ph/9405060 | The Casimir Effect as a Possible Source of Cosmic Energy | Energy production due to the Casimir effect is considered for the case of a
superdense state of matter, which can appear in such cosmological objects as
white dwarfs, neutron stars, quasars and so on. The energy output produced by
the Casimir effect during the creation of a neutron star turns out to be
sufficient to ex... | 1994-05-26 | 2008-02-03 | [
"astro-ph"
] | Igor Yu.Sokolov |
astro-ph/9405057 | Probability Distribution of Primordial Angular Momentum and Formation of
Massive Black Holes | We consider the joint probability distribution function for the mass contrast
and angular momentum of over-density regions on the proto- galactic scale and
investigate the formation of massive black holes at redshift $z\gsim10$. We
estimate the growth rate of the angular momentum by the linear perturbation
theory and t... | 1994-05-26 | 2009-10-09 | [
"astro-ph"
] | Hajime Susa, Misao Sasaki, and Takahiro Tanaka |
astro-ph/9405058 | Pre-Collapse Evolution of Galactic Globular Clusters | This paper is concerned with collisionless aspects of the early evolution of
model star clusters. The effects of mass loss through stellar evolution and of
a steady tidal field are modelled using $N$-body simulations. Our results
(which depend on the assumed initial structure and the mass spectrum) agree
qualitatively ... | 1994-05-26 | 2015-06-24 | [
"astro-ph"
] | Toshiyuki Fukushige and Douglas C. Heggie |
astro-ph/9405059 | A Model for the X-Ray and UV Emission from Seyfert Galaxies and Galactic
Black Holes | We propose that the X--ray emission from radio quiet AGN and galactic black
holes is due to Comptonization of soft thermal photons emitted by the
underlying accretion disk in localized structures (blobs). The power per unit
area produced by the blobs, impinging on the disk, can easily dominate the
radiation internally ... | 1994-05-26 | 2009-10-22 | [
"astro-ph"
] | Francesco Haardt, Laura Maraschi and Gabriele Ghisellini |
astro-ph/9405056 | How well should the DENIS Survey probe through the Galactic Plane? | The DENIS 2 micron survey is described. It's ability to probe galaxies at
very low galactic latitudes is computed using simulated images. This analysis
indicates that DENIS will be able to separate galaxies from stars, right
through the Galactic Plane, for galactic longitudes $45^\circ \leq \ell \leq
315^\circ$, with a... | 1994-05-26 | 2007-05-23 | [
"astro-ph"
] | Gary A. Mamon |
astro-ph/9405063 | Gravitational Lensing in Clusters of Galaxies: New Clues Regarding the
Dynamics of Intracluster Gas | Long arcs in clusters of galaxies, produced by gravitational lensing, can be
used to estimate the mass interior to the arcs and therefore, constrain the
cluster mass distribution. The radial density distribution of the intracluster
gas (ICM) can be extracted from the X-ray surface brightness observations. If
the gas te... | 1994-05-26 | 2008-11-26 | [
"astro-ph"
] | Jordi Miralda-Escude and Arif Babul |
astro-ph/9405055 | On Thermal Comptonization in e+- Pair Plasmas | We study $e^{\pm}$ pair plasmas in pair equilibrium, which emit high energy
radiation by thermal Comptonization of soft photons. We find that the maximum
luminosity to size ratio of the source (i.e. the compactness) depends not only
on the hot plasma temperature, but also on the spectral index of the resulting
Comptoni... | 1994-05-25 | 2009-10-22 | [
"astro-ph"
] | Gabriele Ghisellini and Francesco Haardt |
astro-ph/9405054 | The Evolutionary Unified Scheme. I. Quasars and Radio Galaxies in the
Viewing Angle - Redshift Plane | We present a study of the distribution of quasars and radio galaxies in the
plane (viewing angle - redshift) in the framework of the evolutionary unified
scheme (Vagnetti et al. 1991). Results are presented for some illustrative
cases, including a distribution of the Lorentz factors, and appropriate
luminosity function... | 1994-05-25 | 2009-10-22 | [
"astro-ph"
] | F. Vagnetti & R. Spera |
astro-ph/9405052 | On the Influence of X-Ray Galaxy Clusters in the Fluctuations of the
Cosmic Microwave Background | The negative evolution found in X--ray clusters of galaxies limits the amount
of available hot gas for the inverse Compton scattering of the Cosmic Microwave
Background (the Sunyaev--Zel'dovich effect). Using a parametrisation of the
X-ray luminosity function and its evolution in terms of a coalescence model (as
presen... | 1994-05-24 | 2015-06-24 | [
"astro-ph"
] | M.T. Ceballos, X. Barcons |
astro-ph/9405050 | The Principle of Least Action and Clustering in Cosmology | A scheme is developed which enables one to trace backwards in time the cosmic
density and velocity fields, and to determine accurately the current-epoch
velocity field from the current-epoch density field, or vice versa. The scheme
implements the idea of Giavalisco \etal\ (1993) that the principle of least
action shoul... | 1994-05-24 | 2015-06-24 | [
"astro-ph"
] | Mikel Susperregi and James Binney |
astro-ph/9405051 | Orbital Evolution of a Massive Black Hole Pair by Dynamical Friction | We investigate the evolution of a massive black hole pair under the action of
dynamical friction (DF) by a uniform background of light stars with isotropic
velocity distribution. In our scenario, the primary black hole $M_1$ sits, at
rest, in the center of the spherical star distribution (with mass $M_c$) and
the secon... | 1994-05-24 | 2009-10-22 | [
"astro-ph"
] | A. Vecchio, M. Colpi and A. Polnarev |
astro-ph/9405053 | Flare Production of $^6$Li in Population~II Stars | Motivated by the recent report of a $^6$Li detection in the atmosphere of
HD~84937, we couple stellar evolution calculations with light isotope
production via stellar flares. We find that as a consequence of their small
convective envelope mass near the turn-off point, low-metallicity dwarfs and
subgiants may possess o... | 1994-05-24 | 2009-10-22 | [
"astro-ph"
] | C.P. Deliyannis, and R.A. Malaney |
astro-ph/9405048 | The gasdynamic evolution of spherical planetary nebulae:
Radiation-gasdynamics of PNe III | Using a radiation-gasdynamics code the evolution of spherical planetary
nebulae is followed, while taking into account the evolution of central star
and the fast wind. These models show the importance of ionization fronts for
the structure of planetary nebulae, especially for the so called multiple shell
nebulae (MSPNe... | 1994-05-20 | 2007-05-23 | [
"astro-ph"
] | Garrelt Mellema |
astro-ph/9405046 | The Radio Emission from the Ultra-Luminous Far-Infrared Galaxy NGC 6240 | We present new radio observations of the ``prototypical'' ultra-luminous far-
infrared galaxy NGC~6240, obtained using the VLA at 20~cm in `B' configuration
and at 3.6~cm in `A' configuration. These data, along with those from four
previous VLA observations, are used to perform a comprehensive study of the
radio emissi... | 1994-05-19 | 2011-03-10 | [
"astro-ph"
] | Edward J. M. Colbert, Andrew S. Wilson and Jonathan Bland-Hawthorn |
astro-ph/9405045 | A Coupling of Pseudo Nambu Goldstone Bosons to Other Scalars and Role in
Double Field Inflation | We find a coupling of Pseudo Nambu Goldstone bosons (PNGBs) to other
(ordinary) scalars, and consider its importance in various contexts. Our
original motivation was the model of Double Field inflation [1]. We also
briefly consider the role of this coupling for the case of the QCD axion. | 1994-05-19 | 2009-10-22 | [
"astro-ph"
] | Katherine Freese |
astro-ph/9405047 | Recalibration of the H$_{\bf -0.5}$ Magnitudes of Spiral Galaxies | The H magnitude aperture data published by the Aaronson et al. collaboration
over a 10-year period is collected into a homogeneous data set of 1731
observations of 665 galaxies. 96\% of these galaxies have isophotal diameters
and axial ratios determined by the Third Reference Catalogue of Bright Galaxies
(de Vaucouleur... | 1994-05-19 | 2009-10-22 | [
"astro-ph"
] | G. Tormen (University of Padova) and D. Burstein (Arizona State
University) |
astro-ph/9405043 | Cosmological Evolution of Scale-invariant Gravity Waves | The evolution of scale-invariant gravity waves from the early universe is
analyzed using an equation of state which smoothly interpolates between the
radiation dominated era and the present matter dominated era. We find that for
large wavenumbers the standard scale-invarant wavefunction for the gravity wave
severely {\... | 1994-05-18 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | K.-W. Ng and A. D. Speliotopoulos |
astro-ph/9405044 | Polynomial Hybrid Inflation | We study a simple extension of Linde's hybrid inflation model, with the
inflaton mass term replaced by the most general renormalizable potential for
$\phi$. The unprocessed power spectrum of density perturbations can have two
minima and one maximum, roughly corresponding to two steep regions separated by
a somewhat fla... | 1994-05-18 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Yun Wang |
astro-ph/9405040 | Solar nuclear energy generation and the chlorine solar neutrino
experiment | The study of solar neutrinos may provide important insights into the physics
of the central region of the Sun. Four solar neutrino experiments have
confirmed the solar neutrino problem but do not clearly indicate whether solar
physics, nuclear physics, or neutrino physics have to be improved to solve it.
Nonlinear rela... | 1994-05-18 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | H.J. Haubold and A.M. Mathai |
astro-ph/9405041 | Is the halo responsible for the microlensing events? | We discuss whether the astrophysical objects responsible for the recently
reported microlensing events of sources in the Large Magellanic Cloud can be
identified as the brown dwarf components of the spheroid of our galaxy, rather
than the constituents of a dark baryonic halo. | 1994-05-17 | 2007-05-23 | [
"astro-ph"
] | E. Roulet, S. Mollerach and G. F. Giudice |
astro-ph/9405042 | Reionization in an open cdm universe: implications for cosmic microwave
background fluctuations | We generalize previous work on early photoionization to CDM models with
Omega<1. Such models have received recent interest because the excess power in
the large-scale galaxy distribution is phenomenologically fit if the ``shape
parameter" Gamma=h Omega_0 is about 0.25. It has been argued that such models
may require ea... | 1994-05-17 | 2009-10-07 | [
"astro-ph"
] | Max Tegmark, Joseph Silk |
astro-ph/9405039 | Ultraluminous Starbursts in Major Mergers | We use numerical simulation to investigate the triggering of starbursts in
merging disk galaxies. The properties of the merger-driven starbursts are
sensitive to the structure of the progenitor galaxies; specifically, to the
amount of material in a dense central bulge. Galaxies without bulges develop
bars shortly after... | 1994-05-16 | 2007-05-23 | [
"astro-ph"
] | Chris Mihos and Lars Hernquist |
astro-ph/9405037 | Analytic Expression of the Genus in Weakly Non-Gaussian Field Induced by
Gravity | The gravitational evolution of the genus of the density field in large-scale
structure is analytically studied in a weakly nonlinear regime using
second-order perturbation theory. Weakly nonlinear evolution produces asymmetry
in the symmetric genus curve for Gaussian initial density field. The effect of
smoothing the d... | 1994-05-16 | 2009-10-22 | [
"astro-ph"
] | T. Matsubara |
astro-ph/9405038 | Cosmic Deuterium Or A Hydrogen Interloper ? | Two groups have independently reported the possible detection of
extragalactic deuterium in the absorption spectrum of the same high redshift,
low metalicity QSO. Although the high value for the inferred deuterium
abundance poses no problems for cosmology (i.e., big bang nucleosynthesis), it
is in apparent conflict wit... | 1994-05-16 | 2016-06-08 | [
"astro-ph"
] | Gary Steigman |
astro-ph/9405036 | Massive Tau Neutrino and SN 1987a | The emission of $\MeV$-mass tau neutrinos from newly formed neutron stars is
considered in a simple, but accurate, model based upon the diffusion
approximation. The tau-neutrinosphere temperature is found to increase with
mass so that emission of massive tau neutrinos is not suppressed by the
Boltzmann factor previousl... | 1994-05-15 | 2009-09-25 | [
"astro-ph",
"hep-ph"
] | G. Sigl and M.S. Turner |
astro-ph/9405034 | Inflationary Perturbations and Exponential Potentials | We consider the spectrum of primordial fluctuations produced by inflationary
models where the inflaton potential is the sum of two exponential terms. A wide
range of spectra result, with the only constraint being that the scalar
spectrum must have more tilt than the tensor spectrum. This model can mimic the
spectra of ... | 1994-05-15 | 2009-09-25 | [
"astro-ph"
] | Richard Easther |
astro-ph/9405035 | Multiple Outflow Episodes from Protostars:3-D Models of Intermittent
Jets | Short abstract: We present fully 3-D simulations of supersonic, radiatively
cooling intermittent jets with intermediate and long variability periods (that
is, periods of the order of or longer than, the dynamical time scale of the
jet). Variations of intermediate period elucidate the formation and evolution
of chains o... | 1994-05-15 | 2009-10-22 | [
"astro-ph"
] | E.M. de Gouveia Dal Pino and W. Benz |
astro-ph/9405032 | Low-frequency gravitational waves from supermassive black holes | Supermassive black holes are investigated as possible sources for
low-frequency bursts of gravity waves. The event rate for `known' supermassive
black holes at intermediate and high redshifts, inferred from the quasar
luminosity function, is low $\sim 0.1 \yr^{-1}$. A space-based interferometer
could therefore only see... | 1994-05-13 | 2015-06-24 | [
"astro-ph"
] | M. G. Haehnelt |
astro-ph/9405033 | Delayed Hard Photons from Gamma-Ray Bursts | The delayed hard (up to 25 GeV) photons observed more than an hour following
a gamma-ray burst on February 17, 1994 may result from the collisions of
relativistic nucleons with a dense cloud, producing $\pi^0$. The required cloud
density is $\sim 2 \times 10^{11}$ cm$^{-3}$. This cloud may be the remains of
the disrupt... | 1994-05-13 | 2009-10-22 | [
"astro-ph"
] | J. I. Katz |
astro-ph/9405028 | Anharmonic Evolution of the Cosmic Axion Density Spectrum | We present analytic solutions to the spatially homogeneous axion field
equation, using a model potential which strongly resembles the standard
anharmonic $(1-\cos N\theta)$ potential, but contains only a piece-wise second
order term. Our exactly soluble model for $\theta(t)$ spans the entire range
$[-\pi/N,\pi/N]$. In ... | 1994-05-12 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | K. Strobl, T. J. Weiler |
astro-ph/9405027 | Black Hole Relics and Inflation: Limits on Blue Perturbation Spectra | Blue primordial power spectra have spectral index $n>1$ and arise naturally
in the recently proposed hybrid inflationary scenario. An observational upper
limit on {\em n} is derived by normalizing the spectrum at the quadrupole scale
and considering the possible overproduction of Planck mass relics formed in the
final ... | 1994-05-12 | 2009-09-25 | [
"astro-ph",
"gr-qc"
] | Bernard J. Carr, Jonathan H. Gilbert & James E. Lidsey |
astro-ph/9405030 | Ultraviolet Radiation from Evolved Stellar Populations: II. The
Ultraviolet Upturn Phenomenon in Elliptical Galaxies | We present an analysis of the far-ultraviolet upturn phenomenon (UVX)
observed in elliptical galaxies and spiral galaxy bulges. Our premise is that
the UV radiation from these systems emanates primarily from extreme horizontal
branch (EHB) stars and their progeny. We re-derive the broad-band UV colors
$1500-V$ and $250... | 1994-05-12 | 2009-10-22 | [
"astro-ph"
] | Ben Dorman, Robert W. O'Connell, and Robert T. Rood |
astro-ph/9405026 | Optimal Reconstruction of the Velocity and Density Field: Potent and
Max-Flow Algorithms | Although Potent purports to use only radial velocities in reconstructing the
potential velocity field of galaxies, the derivation of transverse components
is implicit in the smoothing procedures adopted. Thus the possibility arises of
using nonradial line integrals to derive a smoothed velocity field. For an
inhomogene... | 1994-05-12 | 2007-05-23 | [
"astro-ph"
] | J.F.L. Simmons, A. Newsam, M.A. Hendry |
astro-ph/9405029 | Induced-gravity Inflation and the Density Perturbation Spectrum | Recent experimental determinations of the spectral index describing the
scalar mode spectrum of density perturbations encourage comparison with
predictions from models of the very early universe. Unlike extended inflation,
Induced-gravity Inflation predicts a power spectrum with $0.98 \leq n_s \leq
1.00$, in close agre... | 1994-05-12 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | David Kaiser |
astro-ph/9405031 | The X-ray Spectrum of Soft Gamma Repeater 1806-20 | Soft Gamma Repeaters (SGRs) are a class of rare, high-energy galactic
transients that have episodes of short (~0.1 sec), soft (~30 keV), intense
(~100 Crab), gamma-ray bursts. We report an analysis of the x-ray emission from
95 SGR1806-20 events observed by the International Cometary Explorer. The
spectral shape remain... | 1994-05-12 | 2009-10-22 | [
"astro-ph"
] | E.E. Fenimore, J.G. Laros, A. Ulmer |
astro-ph/9405022 | On the Abundance of Primordial Helium | We have used recent observations of helium-4, nitrogen and oxygen from some
four dozen, low metallicity, extra-galactic HII regions to define mean $N$
versus $O$, $^4He$ versus $N$ and $^4He$ versus $O$ relations which are
extrapolated to zero metallicity to determine the primordial $^4He$ mass
fraction $Y_P$. The data... | 1994-05-11 | 2009-09-25 | [
"astro-ph"
] | Keith A. Olive and Gary Steigman |
astro-ph/9405024 | Microwave background anisotropy in low-$\Omega_0$ inflationary models
and the scale of homogeneity in the Universe | We study the microwave background anisotropy due to superhorizon-size
perturbations (the Grischuk-Zel'dovich effect) in open universes with negative
spatial curvature. Using COBE results on the low-order temperature multipole
moments, we find that if the homogeneity of the observable Universe arises from
an early epoch... | 1994-05-11 | 2009-10-22 | [
"astro-ph"
] | A. Kashlinsky, I. I. Tkachev, and J. Frieman |
astro-ph/9405023 | HST Observations of Gravitationally Lensed Features in the Rich Cluster
Ac114 | Deep Hubble Space Telescope images of superlative resolution obtained for the
distant rich cluster AC114 (z=0.31) reveal a variety of gravitational lensing
phenomena for which ground-based spectroscopy is available. We present a
luminous arc which is clearly resolved by HST and appears to be a lensed z=0.64
sub-L star ... | 1994-05-11 | 2009-10-22 | [
"astro-ph"
] | Ian Smail, Warrick J. Couch, Richard S. Ellis & Ray M. Sharples |
astro-ph/9405025 | Cosmic Ray Models for Early Galactic Lithium, Beryllium, and Boron
Production | To understand better the early galactic production of Li, Be, and B by cosmic
ray spallation and fusion reactions, the dependence of these production rates
on cosmic ray models and model parameters is examined. The sensitivity of
elemental and isotopic production to the cosmic ray pathlength magnitude and
energy depend... | 1994-05-11 | 2009-09-25 | [
"astro-ph"
] | Brian Fields, Keith Olive, and David Schramm |
astro-ph/9405021 | Beyond the Thin Lens Approximation | We obtain analytic formulae for the null geodesics of
Friedmann-Lema\^{\i}tre-Robertson-Walker spacetimes with scalar perturbations
in the longitudinal gauge. We use these to provide a rigorous derivation of the
cosmological lens equation. We obtain an expression for the magnification of a
bundle of light rays in these... | 1994-05-10 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | Ted Pyne and Mark Birkinshaw |
astro-ph/9405020 | Implications of Particle Acceleration in Active Galactic Nuclei for
Cosmic Rays and High Energy Neutrino Astronomy | We consider the production of high energy neutrinos and cosmic rays in
radio-quiet active galactic nuclei (AGN) or in the central regions of
radio-loud AGN. We use a model in which acceleration of protons takes place at
a shock in an accretion flow onto a supermassive black hole, and follow the
cascade that results fro... | 1994-05-10 | 2010-11-30 | [
"astro-ph"
] | A.P. Szabo and R.J. Protheroe |
astro-ph/9405018 | Solar Neutrinos Almost Independently of Solar Models | Recent solar neutrino results together with the assumption of a stationary
Sun imply severe constraints on the individual components of the total neutrino
flux : $\Phi_{Be} \leq 0.7 \cdot 10^{9} cm^{-2} s^{-1}, \Phi_{CNO} \leq 0.6
\cdot 10^{9} cm^{-2} s^{-1}$ and $64 \cdot 10^{9} cm^{-2} s^{-1} \leq
\Phi_{pp+pep} \leq ... | 1994-05-09 | 2009-09-25 | [
"astro-ph"
] | V.Castellani, S. Degl'Innocenti, G.Fiorentini, B.Ricci |
astro-ph/9405017 | Testing the Least Action Principle in an Omega_0=1 Universe | The least action principle (LAP) is a dynamically rigorous method for
deriving the history of galaxy orbits. In particular it is an Omega_0 test,
predicting current epoch galaxy velocities as a function of position and of the
cosmological background. It is most usefully applied to in--falling structures,
such as the lo... | 1994-05-09 | 2009-10-22 | [
"astro-ph"
] | E.Branchini and R.G.Carlberg |
astro-ph/9405019 | Fragmentation of a Magnetized Filamentary Molecular Cloud Rotating
around its Axis | The dynamical instability of a self-gravitating magnetized filamentary cloud
was investigated while taking account of rotation around its axis. The
filamentary cloud of our model is supported against self-gravity in part by
both a magnetic field and rotation. The density distribution in equilibrium was
assumed to be a ... | 1994-05-09 | 2007-05-23 | [
"astro-ph"
] | Tomoaki Matsumoto, Fumitaka Nakamura, and Tomoyuki Hanawa |
astro-ph/9405015 | Gravitational Lens Time Delays and Gravitational Waves | Using Fermat's principle, we analyze the effects of very long wavelength
gravitational waves upon the images of a gravitationally lensed quasar. We show
that the lens equation in the presence of gravity waves is equivalent to that
of a lens with different alignment between source, deflector, and observer in
the absence... | 1994-05-06 | 2011-09-09 | [
"astro-ph",
"gr-qc"
] | J. Frieman, D. Harari, and G. Surpi |
astro-ph/9405013 | The Cosmic X-ray Background -- IRAS galaxy Correlation and the Local
X-ray Volume Emissivity | We have cross-correlated the galaxies from the IRAS 2 Jy redshift survey
sample and the 0.7 Jy projected sample with the all-sky cosmic X-ray background
(CXB) map obtained from the HEAO-1 A2 experiment. We have developed a
formulation to model the cross-correlation between CXB surface brightness and
galaxy counts. This... | 1994-05-05 | 2009-10-22 | [
"astro-ph"
] | Takamitsu Miyaji, Ofer Lahav, Keith Jahoda, Elihu Boldt |
astro-ph/9405012 | An Analytical Model for the Triaxial Collapse of Cosmological
Perturbations | We present an analytical model for the non-spherical collapse of overdense
regions out of a Gaussian random field of initial cosmological perturbations.
The collapsing region is treated as an ellipsoid of constant density, acted
upon by the quadrupole tidal shear from the surrounding matter. The dynamics of
the ellipso... | 1994-05-05 | 2009-10-22 | [
"astro-ph"
] | Daniel J. Eisenstein and Abraham Loeb |
astro-ph/9405016 | Accretion Disk Coronae in High Luminosity Systems | We present the results of self-consistent models of Compton-heated accretion
disk coronae. The models are calculated using a new method for computing
monochromatic radiative transfer in two-dimensions. The method splits the
radiation into direct and scattered components. The direct radiation is
computed by calculating ... | 1994-05-05 | 2009-10-22 | [
"astro-ph"
] | Stephen D. Murray, John I. Castor, Richard I. Klein, and Christopher
F. McKee |
astro-ph/9405014 | Galaxy Mergers and Gravitational Lens Statistics | We investigate the impact of hierarchical galaxy merging on the statistics of
gravitational lensing of distant sources. Since no definite theoretical
predictions for the merging history of luminous galaxies exist, we adopt a
parametrized prescription, which allows us to adjust the expected number of
pieces comprising a... | 1994-05-05 | 2019-08-17 | [
"astro-ph"
] | Hans-Walter Rix, Dan Maoz, Edwin L. Turner and Masataka Fukugita |
astro-ph/9405011 | Velocity Differences as a Probe of Non--Gaussian Density Fields | We examine the multi--point velocity field for non--Gaussian models as a
probe of non--Gaussian behavior. The two--point velocity correlation is not a
useful indicator of a non--Gaussian density field, since it depends only on the
power spectrum, even for non--Gaussian models. However, we show that the
distribution of ... | 1994-05-04 | 2009-10-22 | [
"astro-ph"
] | Paolo Catelan and Robert J. Scherrer |
astro-ph/9405009 | BATSE Gamma-Ray Burst Line Search: II. Bayesian Consistency Methodology | We describe a Bayesian methodology to evaluate the consistency between the
reported Ginga and BATSE detections of absorption features in gamma ray burst
spectra. Currently no features have been detected by BATSE, but this
methodology will still be applicable if and when such features are discovered.
The Bayesian method... | 1994-05-03 | 2009-10-22 | [
"astro-ph"
] | D. L. Band, L. A. Ford, J. L. Matteson, M. Briggs, W. Paciesas, G.
Pendleton, R. Preece, D. Palmer, B. Teegarden, and B. Schaefer |
astro-ph/9405008 | Neutrino Flavor Evolution Near a Supernova's Core | (The discussion is expanded, and a mistake in the crossing probability is
corrected.) | 1994-05-03 | 2011-07-19 | [
"astro-ph",
"hep-ph"
] | J. Pantaleone |
astro-ph/9405007 | G272.2--3.2: A centrally filled and possibly young SNR discovered by
ROSAT | We report the discovery of a new SNR in the \ros All-Sky-Survey data. The SNR
has a nearly circular shape with a diameter of about 15 arcmin. The surface
brightness is rather uniform over the remnant. The observed interstellar
absorption suggests a distance of about 1.8$^{+1.4}_{-0.8}$ kpc. The X-ray
emission appears t... | 1994-05-03 | 2007-05-23 | [
"astro-ph"
] | J. Greiner, R. Egger, B. Aschenbach |
astro-ph/9405010 | Baryonic Dark Matter and Big-Bang Nucleosynthesis | The enclosed paper was submitted for publication in Ap.J Lett. in February
1992. It has been rejected on the grounds that it predicts primordial Deuterium
abundance which is contradicted by observations and because it disagreed with
published analysis and conclusions of previous authors. However, in a recent
article in... | 1994-05-03 | 2007-05-23 | [
"astro-ph"
] | Arnon Dar, Jaques Goldberg and Michael Rudzsky |
astro-ph/9405006 | $\gamma$-Ray Bursts and Neutron Star Mergers | $\gamma$-ray bursts have baffled theorists ever since their accidental
discovery at the sixties. We suggest that these bursts originate in merger of
neutron star binaries, taking place at cosmological distances. These mergers
release $\approx 10^{54}ergs$, in what are possibly the strongest explosions in
the Universe. ... | 1994-05-03 | 2007-05-23 | [
"astro-ph"
] | Tsvi Piran |
astro-ph/9405005 | Competition between Pressure and Gravity Confinement in Lyman-Alpha
Forest Observations | A break in the distribution function of Ly$\alpha$ clouds (at a typical
redshift of $2.5$) has been reported by Petitjean et al. (1993). This feature
is what would be expected from a transition between pressure confinement and
gravity confinement (as predicted in Charlton, Salpeter, and Hogan (1993)). The
column densit... | 1994-05-03 | 2009-10-22 | [
"astro-ph"
] | Jane C. Charlton, Edwin E. Salpeter, and Suzanne M. Linder |
astro-ph/9405002 | Large Scale Structure Effects on the Gravitational Lens Image Positions
and Time Delay | We compute the fluctuations in gravitational lens image positions and time
delay caused by large scale structure correlations. We show that these
fluctuations can be expressed as a simple integral over the density power
spectrum. Using the {\sl COBE} normalization we find that positions of objects
at cosmological dista... | 1994-05-02 | 2008-11-26 | [
"astro-ph"
] | Uros Seljak |
astro-ph/9405004 | Recent Deuterium Observations and Big Bang Nucleosynthesis: A New
Paradigm? | A new observation of D in a primordial gas cloud, made using the high
resolution spectrograph at the Keck telescope, indicates an abundance $ D/H
=(1.9-2.5) \times 10^{-4}$ \cite{SCHR}. Since deuterium is destroyed by stars,
and the predicted Big Bang Nucleosynthesis (BBN) abundance falls monotonically
with increasing ... | 1994-05-02 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Lawrence M. Krauss and Peter J. Kernan |
astro-ph/9405003 | Damped Lyman Alpha Systems vs. Cold + Hot Dark Matter | Although the Cold + Hot Dark Matter (CHDM) cosmology provides perhaps the
best fit of any model to all the available data at the current epoch, CHDM
produces structure at relatively low redshifts and thus could be ruled out if
there were evidence for formation of massive objects at high redshifts. Damped
Ly$\alpha$ sys... | 1994-05-02 | 2009-10-22 | [
"astro-ph",
"hep-ph"
] | Anatoly Klypin, Stefano Borgani, Jon Holtzman, & Joel Primack |
astro-ph/9405001 | Deviations from Hierarchical Clustering in Real and Redshift Space | We discuss the effects of redshift--space distortions on the estimate of high
order galaxy correlation functions. We use both the Perseus--Pisces redshift
survey and the results of high--resolution N--body simulations to explore the
consequences of working in redshift space on the detection of deviations from
hierarchi... | 1994-05-02 | 2007-05-23 | [
"astro-ph"
] | S. Ghigna, S.A. Bonometto, L. Guzzo, R. Giovanelli, M.P. Haynes,
A.Klypin & J.R. Primack |
astro-ph/9404080 | Compact Radio Cores in Seyfert Galaxies | We have observed a sample of 157 Seyfert galaxies with a 275 km baseline
radio interferometer to search for compact, high brightness temperature radio
emission from the active nucleus. We obtain the surprising result that compact
radio cores are much more common in Seyfert 2 than in Seyfert 1 galaxies, which
at first s... | 1994-04-30 | 2009-10-22 | [
"astro-ph"
] | A. L. Roy, R. P. Norris, M. J. Kesteven, E. R. Troup, & J. E. Reynolds |
astro-ph/9404078 | Quasar Production:Topological Defect Formation due to a Phase Transition
linked with Massive Neutrinos | Recent observations of the space distribution of quasars indicate a very
notable peak in space density at a redshift of $2$ to $3$.It is pointed out in
this article that this may be the result of a phase transition which has a
critical temperature of roughly a few meV (in the cosmological units h=c=k=1 ).
It is further... | 1994-04-29 | 2010-11-01 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | Anupam Singh |
astro-ph/9404079 | Diffuse Gamma Rays from WIMP Decay and Annihilation | I discuss contributions to the diffuse gamma-ray background from decay and
annihilation of weakly interacting massive particles (WIMPs). I first review
the calculation of the cosmological abundance of a WIMP and show that it is
simply related to the cross section for annihilation of the WIMP into lighter
particles. The... | 1994-04-29 | 2007-05-23 | [
"astro-ph",
"hep-ph"
] | Marc Kamionkowski |
astro-ph/9404073 | The Evolution and Efficiency of Oblique MHD Cosmic-Ray Shocks: Two-Fluid
Simulations | Using a new, second-order accurate numerical method we present dynamical
simulations of oblique MHD cosmic ray (CR) modified plane shock evolution using
the two-fluid model for diffusive particle acceleration. The numerical shocks
evolve to published analytical steady state properties. In order to probe the
dynamical r... | 1994-04-29 | 2009-10-22 | [
"astro-ph"
] | Adam Frank, T. W. Jones, and Dongsu Ryu |
astro-ph/9404077 | From the Owl to the Eskimo: the Radiation-Gasdynamics of Planetary
Nebulae IV | We present the results of two-dimensional radiation-gasdynamic simulations of
aspherical Planetary Nebulae (PNe) evolution. These simulations were
constructed using the Generalized Interacting Stellar Winds (GISW) scenario of
Balick (1987) where a fast, tenuous wind from the central star expands into a
toroidal, slow, ... | 1994-04-29 | 2018-07-25 | [
"astro-ph"
] | Adam Frank and Garrelt Mellema |
astro-ph/9404076 | On Fractal Structure of Quantum Gravity and Relic Radiation Anisotropy | It is argued that large-scale ($>7^o$) cosmic microwave background anisotropy
detected in COBE cosmic experiment can be considered as a trace of the quantum
gravity fractal structure. | 1994-04-29 | 2008-02-03 | [
"astro-ph",
"hep-ph"
] | M.V. Altaisky, V.A. Bednyakov and S.G. Kovalenko |
astro-ph/9404074 | Numerical Magnetohydrodynamics in Astrophysics: Algorithm and Tests for
One-Dimensional Flow | We describe a numerical code to solve the equations for ideal
magnetohydrodynamics (MHD). It is based on an explicit finite difference scheme
on an Eulerian grid, called the Total Variation Diminishing (TVD) scheme, which
is a second-order-accurate extension of the Roe-type upwind scheme. We also
describe a nonlinear R... | 1994-04-29 | 2009-10-22 | [
"astro-ph"
] | Dongsu Ryu and T. W. Jones |
astro-ph/9404071 | The effect of triplet production on pair-Compton cascades in thermal
radiation | We calculate the spectrum of photons resulting from electromagnetic cascades
through thermal radiation, and examine the consequences of including triplet
production in these cascades. We assume that the cascade is one-dimensional,
and we find that this approximation is justified in the present work for
thermal radiatio... | 1994-04-28 | 2015-06-24 | [
"astro-ph"
] | A. Mastichiadis, R.J. Protheroe and A.P. Szabo |
astro-ph/9404075 | Bloated Stars as AGN Broad Line Clouds: The Emission Line Spectrum | The Bloated Stars Scenario proposes that AGN broad line emission originates
in the winds or envelopes of bloated stars (BS). Its main advantage over BLR
cloud models is the gravitational confinement of the gas and its major
difficulty the large estimated number of BSs and resulting high mass loss rate.
We calculate the... | 1994-04-28 | 2015-06-24 | [
"astro-ph"
] | Tal Alexander and Hagai Netzer |
astro-ph/9404072 | Measurements of Anisotropy in the Cosmic Microwave Background Radiation
at Degree Angular Scales Near the Stars Sigma Hercules and Iota Draconis | We present results from two four-frequency observations centered near the
stars Sigma Hercules and Iota Draconis during the fourth flight of the
Millimeter-wave Anisotropy eXperiment (MAX). The observations were made of 6 x
0.6-degree strips of the sky with 1.4-degree peak to peak sinusoidal chop in
all bands. The FWHM... | 1994-04-28 | 2008-02-03 | [
"astro-ph"
] | A. C. Clapp, M. J. Devlin, J. O. Gundersen, C. A. Hagmann, V. V.
Hristov, A.E. Lange, M. Lim, P. M. Lubin, P. D. Mauskopf, P. R. Meinhold, P.
L. Richards, G. F. Smoot, S. T. Tanaka P. T. Timbie, and C. A. Wuensche |
astro-ph/9404068 | CBR anisotropy from primordial gravitational waves in inflationary
cosmologies | We examine stochastic temperature fluctuations of the cosmic background
radiation (CBR) arising via the Sachs-Wolfe effect from gravitational wave
perturbations produced in the early universe. These temperature fluctuations
are described by an angular correlation function $C(\gamma)$. A new (more
concise and general) d... | 1994-04-27 | 2009-10-22 | [
"astro-ph",
"gr-qc"
] | Bruce Allen and Scott Koranda |
astro-ph/9404067 | A Potential Window to the GUT | The possibility that the form of the inflationary potential can be
reconstructed from a knowledge of the primordial power spectra of scalar
(density) and tensor (gravity wave) perturbations is discussed and reviewed. It
is suggested that measurements of the scalar spectral index and the amplitude
of the tensor spectrum... | 1994-04-27 | 2007-05-23 | [
"astro-ph"
] | James E. Lidsey |
astro-ph/9404069 | Sample Variance of non-Gaussian Sky Distributions | Non-Gaussian distributions of cosmic microwave background (CMB) anisotropies
have been proposed to reconcile the discrepancies between different experiments
at half-degree scales (Coulson et al. 1994). Each experiment probes a different
part of the sky, furthermore, sky coverage is very small, hence the sample
variance... | 1994-04-27 | 2009-10-22 | [
"astro-ph"
] | Xiaochun Luo |
astro-ph/9404070 | Solar Neutrinos: Where We Are, Where We Are Going | There are four important facts about solar neutrinos. They are listed in
order of importance in this abstract and discussed more in the text of the
talk. First, solar neutrinos have been detected in four experiments with
approximately the energies and fluxes predicted by the standard solar model,
confirming the hypothe... | 1994-04-27 | 2008-02-03 | [
"astro-ph"
] | John N. Bahcall |
astro-ph/9404066 | Abundance Gradients in Cooling Flow Clusters: Ginga Lac & Einstein SSS
Spectra of A496, A1795, A2142 & A2199 | We analyze the Ginga LAC and Einstein SSS spectra of four cooling flow
clusters, A496, A1795, A2142 and A2199, each of which shows firm evidence of a
relatively cool component. The inclusion of such cool spectral components in
joint fits of SSS and LAC data leads to somewhat higher global temperatures
than are derived ... | 1994-04-26 | 2007-05-23 | [
"astro-ph"
] | Raymond E. White III, C. S. R. Day, Isamu Hatsukade and John P. Hughes |
astro-ph/9404065 | The Hidden Nuclear Spectrum of the Luminous IRAS Source FSC10214$+$4724 | Optical spectropolarimetry of the luminous IRAS source FSC10214$+$4724
(z$=2.286$) reveals that the strong (\twid17\%) linear polarization detected by
Lawrence \etal\/ is shared by both the narrow UV emission lines and the
underlying continuum. This observation and the brightness of the source rule
out synchrotron emis... | 1994-04-26 | 2009-10-22 | [
"astro-ph"
] | Buell T. Jannuzi, Richard Elston, Gary D. Schmidt, Paul S. Smith, and
H. S. Stockman |
astro-ph/9404062 | Resonant Oscillations and Tidal Heating in Coalescing Binary Neutron
Stars | Tidal interaction in a coalescing neutron star binary can resonantly excite
the g-mode oscillations of the neutron star when the frequency of the tidal
driving force equals the intrinsic g-mode frequencies. We study the g-mode
oscillations of cold neutron stars using recent microscopic nuclear equations
of state, where... | 1994-04-25 | 2015-06-24 | [
"astro-ph"
] | Dong Lai |
astro-ph/9404063 | Relativistic Dynamical Friction in the Weak Scattering Limit | A test mass, $M$, moving through an ambient medium of light particles with
lower average kinetic energy than itself suffers a deceleration caused by its
scattering of the light particles. The phenomenon is usually referred to as
dynamical friction. The velocity, $\v$, of the test mass decays on a timescale
independent ... | 1994-04-25 | 2015-06-24 | [
"astro-ph"
] | D. Syer |
astro-ph/9404064 | A Model for the Chemical Evolution of the Galaxy with Refuses | A model is presented for the chemical evolution of the solar neighbourhood
which takes into account three families of galactic objects, according to their
condensation states: stars, refuses and gas. Stars are defined as every
condensed objects with masses greater than or equal to the minimum mass which
ignites hydroge... | 1994-04-25 | 2009-10-22 | [
"astro-ph"
] | Helio J. Rocha-Pinto, Lilia I. Arany-Prado, Walter J. Maciel |
astro-ph/9404059 | Alignment and morphology of elliptical galaxies: the influence of the
cluster tidal field | We investigate two possible effects of the tidal field induced by a spherical
cluster on its elliptical galaxy members: the modification of the ellipticity
of a spherical galaxy and the isophotal alignment in the cluster radial
direction of a misaligned prolate galaxy. Numerical N-body simulations have
been performed f... | 1994-04-24 | 2015-06-24 | [
"astro-ph"
] | L. Ciotti and S.N. Dutta |
astro-ph/9404060 | Frictional Heating and Neutron Star Thermal Evolution | Differential rotation between the neutron star crust and a more rapidly
rotating interior superfluid leads to frictional heating that affects the
star's long-term thermal evolution and resulting surface emission. Here we
present the results of thermal evolution simulations based on two models of the
vortex pinning forc... | 1994-04-24 | 2009-10-22 | [
"astro-ph"
] | K. Van Riper (LANL), B. Link (Montana), and R. Epstein (LANL) |
astro-ph/9404061 | Isocurvature Perturbations in Multiple Inflationary Models | Dynamics of long-wave isocurvature perturbations during an inflationary stage
in multiple (multi-component) inflationary models is calculated analytically
for the case where scalar fields producing this stage interact between
themselves through gravity only. This enables to determine correct amplitudes
of such perturba... | 1994-04-24 | 2011-06-30 | [
"astro-ph",
"gr-qc"
] | D. Polarski and A. A. Starobinsky |
astro-ph/9404055 | Dynamics of Massive Shells Ejected in a Supernova Explosion | An expanding shell is accelerated outward by radiation from the remnant star
and slowed by ram pressure and accretion as it plows into the interstellar
medium. We set up the general relativistic equations of motion for such a
shell. In the non-relativistic limit, the reduce to the standard Ostriker-Gunn
equations. Furt... | 1994-04-22 | 2007-05-23 | [
"astro-ph"
] | D. Nunez and H. P. de Oliveira |
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