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/9505123 | A Statistic for identifying cosmic string wakes and other sheet-like
structure | We describe an implementation of the structure functions of Babul \&
Starkman, in order to quantify the ``sheet-like'' nature of a distribution of
matter. We test this statistic on a toy model describing cosmic string wakes,
and show that it does a better job than other statistics which have been
proposed for distingui... | 1995-05-26 | 2015-06-24 | [
"astro-ph"
] | James Robinson and Andreas Albrecht |
astro-ph/9505124 | Variable Stars in the MACHO Collaboration Database | The MACHO Collaboration's search for baryonic dark matter via its
gravitational microlensing signature has generated a massive database of time
ordered photometry of millions of stars in the LMC and the bulge of the Milky
Way. The search's experimental design and capabilities are reviewed and the
dark matter results ar... | 1995-05-26 | 2007-05-23 | [
"astro-ph"
] | K.H. Cook, C. Alcock, R.A. Allsman, T.S. Axelrod, K.C. Freeman, B.A.
Peterson, P.J. Quinn, A.W. Rodgers, D.P. Bennett, J. Reimann, K. Griest, S.L.
Marshall, M.R. Pratt, C.W. Stubbs, W. Sutherland, and D. Welch |
astro-ph/9505121 | HST polarization map of the ultraviolet emission from the outer jet in
M87 and a comparison with the 2cm radio emission | We present the first high resolution polarization map of the ultraviolet
emission from the outer jet in M87. The data were obtained by the Faint Object
Camera (FOC) on the Hubble Space Telescope. The polarization map has a
resolution of 0.2 arcsec and was derived using data from three linearly
polarized images combined... | 1995-05-26 | 2015-06-24 | [
"astro-ph"
] | R.C. Thomson, D.R.T. Robinson, N.R. Tanvir, C.D. Mackay, A. Boksenberg |
astro-ph/9505119 | Effect of kick velocity on the gamma-ray burster distribution | The effect of kick velocity to newly born pulsars on the distribution of
$\gamma$-ray bursters is examined in the context of a disk origin model and a
halo model of $\gamma$-ray bursters. The conversion formula from a
2-dimensional velocity distribution function to a 3-dimensional distribution
function is derived and a... | 1995-05-25 | 2011-05-23 | [
"astro-ph"
] | Nobuo Terasawa and Makoto Hattori |
astro-ph/9505118 | The Sun | The paper is based on lectures on the internal structure and evolution of the
Sun. It contains an outline of observational and theoretical elements of the
Standard Solar Model, emphasizing also recent research results on solar
rotation, magnetic fields, thermonuclear energy generation, and solar activity. | 1995-05-25 | 2011-03-01 | [
"astro-ph"
] | H.J. Haubold and A.M. Mathai |
astro-ph/9505116 | Magnetic and Spin History of Very Young Pulsars | After Michel (1994) introduced a phenomenological picture of `rapid
magnetization' of newly born neutron stars (NSs), Muslimov & Page (1995)
suggested that the physical conditions accompanying the formation of a NS may
result in the surface magnetic field of the NS having a low value (~ 10^8 -
10^9 G) while the bulk of... | 1995-05-25 | 2009-10-28 | [
"astro-ph"
] | A. Muslimov (Institut fur Astrophysik der Universitat Bonn) & D. Page
(Instituto de Astronomia, UNAM, Mexico) |
astro-ph/9505117 | Properties of a possible class of particles able to travel faster than
light | The apparent Lorentz invariance of the laws of physics does not imply that
space-time is indeed minkowskian. Matter made of solutions of Lorentz-invariant
equations would feel a relativistic space-time even if the actual space-time
had a quite different geometry (i.e. a galilean space-time). A typical example
is provid... | 1995-05-25 | 2009-08-09 | [
"astro-ph",
"hep-ph",
"hep-th"
] | Luis Gonzalez-Mestres (L.A.P.P. Annecy and L.P.C. College de France) |
astro-ph/9505111 | NON-AXISYMMETRIC STRUCTURES IN THE STELLAR DISKS OF GALAXIES | We study the azimuthal structure of the stellar disks of 18 face-on spiral
galaxies, using K-band photometry to trace the stellar surface mass density.
Assuming the disks are co-planar, we characterize their deviation from
axisymmetry by the fractional amplitudes, A_i and phases of the azimuthal
Fourier components at r... | 1995-05-24 | 2009-10-28 | [
"astro-ph"
] | Hans-Walter Rix (Max-Planck-Inst. fuer Astrophysik) and Dennis
Zaritsky (UC Santa Cruz) |
astro-ph/9505115 | Observation of Infrared and Radio Lines of Molecules toward GL2591 and
Comparison to Physical and Chemical Models | We have observed rovibrational transitions of acetylene and HCN near 13
microns in absorption toward GL2591. We also observed rotational lines of CS,
HCN, H2CO, and HCO+. The combined data are analyzed in terms of models with a
cloud envelope with density gradients and discrete regions of hot, dense gas,
probably near ... | 1995-05-24 | 2009-10-28 | [
"astro-ph"
] | John S. Carr, Neal J. Evans II, J. H. Lacy, and Shudong Zhou |
astro-ph/9505113 | Optimizing Higher-Order Lagrangian Perturbation Theory for Standard CDM
and BSI models | We investigate the performance of Lagrangian perturbation theory up to the
second order for two scenarios of cosmological large-scale structure formation,
SCDM (standard cold dark matter) and BSI (broken scale invariance). The latter
model we study as a representative of COBE-normalized CDM models which fit the
small-s... | 1995-05-24 | 2015-06-24 | [
"astro-ph"
] | Arno G. Weiss, Stefan Gottloeber and Thomas Buchert |
astro-ph/9505112 | CCD PHOTOMETRY OF RR LYRAE STARS IN M5 AS A TEST FOR THE PULSATIONAL
SCENARIO | In this paper we present new CCD investigations of RR Lyrae pulsators in the
Oo.I globular cluster M5. B V curves of light for 15 RR Lyrae are presented.
With the addition of further 11 curves of light by Storm, Carney and Beck
(1991) one is dealing with a sample of 26 well studied cluster pulsators whose
properties ha... | 1995-05-24 | 2009-10-28 | [
"astro-ph"
] | E. Brocato, V. Castellani and V. Ripepi |
astro-ph/9505114 | NEAR-INFRARED PHOTOMETRY OF THE CORE-COLLAPSED METAL-POOR GLOBULAR
CLUSTERS NGC5946 AND NGC7099 | Moderately deep near-infrared images are used to investigate the photometric
properties and spatial distribution of bright giants near the centers of the
core-collapsed globular clusters NGC5946 and NGC7099. The former cluster is
located at a low Galactic latitude and is heavily reddened; nevertheless, the
K, J-K color... | 1995-05-24 | 2016-08-30 | [
"astro-ph"
] | T. J. Davidge |
astro-ph/9505103 | Wiener reconstruction, SVD and `Optimal' Functional bases: Appliction
For Redshift Galaxy Catalogs | The formalism of Wiener filtering is applied to reconstruct, in terms of
spherical harmonics, the projected $4\pi$ galaxy distribution of a mock IRAS
1.2 Jy catalog with a `Zone of Avoidance' $|b| = 15^\circ$. The Singular Value
Decomposition al gorithm is utilized as an extra-regularizer in order to
stabilize the inve... | 1995-05-23 | 2007-05-23 | [
"astro-ph"
] | Saleem Zaroubi |
astro-ph/9505110 | THE CHEMISTRY OF IRREGULAR GALAXIES | I review the current data on abundances in irregular galaxies, with special
emphasis on recent results on C/O and Si/O from observations with the Hubble
Space Telescope. The abundance data for He, C, N, and O in irregular galaxies
is discussed in the context of models for the evolution of dwarf galaxies. | 1995-05-23 | 2008-02-03 | [
"astro-ph"
] | Don Garnett (Astronomy Department, University of Minnesota) |
astro-ph/9505107 | Bimodal star formation in elliptical galaxies and the enrichment of the
intra-cluster medium | A detailed model of galactic evolution is proposed to explain both the iron
content of the Intra-Cluster Medium (ICM) and of the ellipticals pertaining to
the cluster. SNII are responsible for the production of Fe in the galaxies and
of its partial ejection in the surrounding medium. A high formation rate of
massive st... | 1995-05-23 | 2008-02-03 | [
"astro-ph"
] | D. Elbaz, M. Arnaud, E.Vangioni-Flam |
astro-ph/9505104 | The fate of Li and Be in stars and in the laboratory | We connect the observed under-abundances of Li and Be in dwarfs, with recent
results on nuclear cross sections at low energies: for collisions of protons
with atomic or molecular targets, the measured cross sections seem too high
with respect to extrapolations for bare nuclei. Phenomenologically, these
anomalous nuclea... | 1995-05-23 | 2015-06-24 | [
"astro-ph",
"hep-ph"
] | V. Castellani, G. Fiorentini, O. Straniero and B. Ricci |
astro-ph/9505105 | Cosmological evolution and large scale structures of radio galaxies and
quasars | The simple unification scheme of powerful radio galaxies and quasars, based
entirely on the orientation dependent effects, has been confronted with the
observed radio structures for 152 radio galaxies and 173 steep spectrum
quasars. Contrary to the scheme's prediction, the cosmological evolution of
geometrical paramete... | 1995-05-23 | 2008-02-03 | [
"astro-ph"
] | Krzysztof T. Chyzy and Stanislaw Zieba |
astro-ph/9505108 | Number and Luminosity Evolution of Interacting Galaxies as a Natural
explanation for the Galaxy Counts | A newly developed isochrone synthesis algorithm for the photometric evolution
of galaxies is described. Two initial mass functions, IMFs, in particular, the
recent IMF determined by Kroupa, Tout, and Gilmore, three photometric
transformations, and a 1-Gyr-burst star formation rate, SFR, are used to
compute the $B-V$ an... | 1995-05-23 | 2016-08-30 | [
"astro-ph"
] | Pedro Colin (Instituto de Astronomia, UNAM & Department of Astronomy,
U of T) |
astro-ph/9505106 | Isotropy, homogeneity and dipole saturation | A distribution of points that satisfies the property of local isotropy is not
necessarily homogeneous: homogeneity is implied by the condition of local
isotropy together with the assumption of analyticity or regularity. Here we
show that the evidence of dipole saturation in galaxies (and clusters)
catalogues, together ... | 1995-05-23 | 2017-04-26 | [
"astro-ph"
] | Francesco Sylos Labini |
astro-ph/9505109 | GRAVITATIONAL LENSING EFFECT ON COSMIC MICROWAVE BACKGROUND
ANISOTROPIES: A POWER SPECTRUM APPROACH | The effect of gravitational lensing on cosmic microwave background (CMB)
anisotropies is investigated using the power spectrum approach. The lensing
effect can be calculated in any cosmological model by specifying the evolution
of gravitational potential. Previous work on this subject is generalized to a
non-flat unive... | 1995-05-23 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | Uros Seljak (MIT) |
astro-ph/9505099 | The Stromlo-APM Redshift Survey III. Redshift Space Distortions, Omega
and Bias | Galaxy redshift surveys provide a distorted picture of the universe due to
the non-Hubble component of galaxy motions. By measuring such distortions in
the linear regime one can constrain the quantity $\beta = \Omega^{0.6}/b$ where
$\Omega$ is the cosmological density parameter and $b$ is the (linear) bias
factor for o... | 1995-05-22 | 2009-10-28 | [
"astro-ph"
] | J. Loveday (FNAL), G. Efstathiou (Oxford), S.J. Maddox (RGO) and B.A.
Peterson (MSSSO) |
astro-ph/9505101 | Phase-Transition theory of Instabilities. IV. Critical Points on the
Maclaurin Sequence and Nonlinear Fission Processes | We use a free-energy minimization approach to describe the secular and
dynamical instabilities as well as the bifurcations along equilibrium sequences
of rotating, self-gravitating fluid systems. Our approach is fully nonlinear
and stems from the Landau-Ginzburg theory of phase transitions. Here we examine
higher than ... | 1995-05-22 | 2009-10-28 | [
"astro-ph"
] | D.M. Christodoulou, D. Kazanas, I. Shlosman and J.E. Tohline |
astro-ph/9505100 | No birefringence in Einstein's gravity | Einstein's theory predicts that, massive test particles with non-zero spin or
angular momentum, in an external gravitation field, follow geodesics which
depend upon the orientation of the spin-angular momentum . It has been claimed
that such an effect also holds for photons i.e. photons with different
helicities follow... | 1995-05-22 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | S. Mohanty and A.R. Prasanna |
astro-ph/9505097 | Discovery of an Arc System in the Brightest ROSAT Cluster of Galaxies | We report the discovery of two bright arcs in what turns out to be the
brightest X--ray cluster in the ROSAT band ever observed, RXJ1347.5-1145. Its
luminosity is $(6.2\pm0.6) \cdot10^{45}$erg s$^{-1}$ (in the range
0.1--2.4~keV). The arcs are most probably gravitationally lensed images of
background galaxies. They wer... | 1995-05-22 | 2011-05-23 | [
"astro-ph"
] | S.Schindler, L.Guzzo, H.Ebeling, H.B\"ohringer, G.Chincarini,
C.A.Collins, S.De Grandi, D.M.Neumann, U.G.Briel, P.Shaver, G.Vettolani |
astro-ph/9505098 | RECOVERING THE INTRINSIC METALLICITY DISTRIBUTION OF ELLIPTICAL GALAXIES | We address the problem of deriving, from the observed projected metallicity
gradients, the intrinsic metallicity distribution of elliptical galaxies as a
function of their integrals of motion. The method is illustrated by an
application to anisotropic spherical Hernquist models. We also compare the
derived metallicity ... | 1995-05-22 | 2009-09-25 | [
"astro-ph"
] | L. Ciotti, M. Stiavelli and A. Braccesi |
astro-ph/9505102 | Echoes of Gravity | The study of anisotropies in the Cosmic Microwave Background radiation is
progressing at a phenomenal rate, both experimentally and theoretically. These
anisotropies can teach us an enormous amount about the way that fluctuations
were generated and the way they subsequently evolved into the clustered
galaxies which are... | 1995-05-22 | 2008-11-26 | [
"astro-ph"
] | Douglas Scott & Martin White |
astro-ph/9505096 | HOW FAR AWAY ARE GAMMA-RAY BURSTERS? | The positions of over 1000 gamma-ray bursts detected with the BATSE
experiment on board of the Compton Gamma Ray Observatory are uniformly and
randomly distributed in the sky, with no significant concentration to the
galactic plane or to the galactic center. The strong gamma-ray bursts have an
intensity distribution co... | 1995-05-22 | 2016-08-30 | [
"astro-ph"
] | Bohdan Paczynski (Princeton University Observatory) |
astro-ph/9505095 | Simulating ACQ/PEAK target acquisitions with the HST/FOS | A common target acquisition strategy with the Faint Object Spectrograph (FOS)
on board the Hubble Space Telescope (HST) is to use a sequence of so-called
ACQ/PEAK stages. Standard sequences and exposure times are given in the FOS
Instrument Handbook (Keyes et al.~1995). The success of a given strategy is
difficult to p... | 1995-05-21 | 2007-05-23 | [
"astro-ph"
] | Roeland P. van der Marel |
astro-ph/9505094 | On Masses of Equilibrium Configurations | Proceeding from the new gravitation equations (Phys.Lett.A,v.156, p.404
(1991)) we argue that the theory in principle allows equilibrium stable
configurations of a degenerate electron or neutron gas with very large masses. | 1995-05-20 | 2008-06-24 | [
"astro-ph",
"gr-qc"
] | L.V.Verozub |
astro-ph/9505092 | On the formation of low-mass black holes in massive binary stars | Recently (Brown \& Bethe 1994) it was suggested that most stars with main
sequence mass in the range of about $18 - 30 M_{\odot}$ explode, returning
matter to the Galaxy, and then go into low-mass ($\geq 1.5 M_{\odot}$) black
holes. Even more massive main-sequence stars would, presumably, chiefly g o
into high-mass ($\... | 1995-05-19 | 2016-08-30 | [
"astro-ph"
] | G.E. Brown, J.C. Weingartner, R.A.M.J. Wijers |
astro-ph/9505093 | The arrival directions of the most energetic cosmic rays | In this Letter we examine the arrival directions of the most energetic cosmic
rays (E > 2 * 10^19 eV) detected by several air shower experiments. We find
that data taken by different air shower arrays show positive correlations,
indicating a non--uniform arrival direction distribution. We also find that the
events with... | 1995-05-19 | 2008-11-26 | [
"astro-ph",
"hep-ph"
] | Todor Stanev, Peter Biermann, Jeremy Lloyd-Evans, Joerg Rachen and
Alan Watson |
astro-ph/9505091 | Galaxy Classification by Human Eyes and by Artificial Neural Networks | The rapid increase in data on galaxy images at low and high redshift calls
for re-examination of the classification schemes and for new automatic
objective methods. Here we present a classification method by Artificial Neural
Networks. We also show results from a comparative study we carried out using a
new sample of 8... | 1995-05-19 | 2007-05-23 | [
"astro-ph"
] | Ofer Lahav |
astro-ph/9505089 | PERIGALACTIC DISTANCES OF GLOBULAR CLUSTERS | Luminosities and tidal radii of globular clusters have been used to estimate
the perigalactic distances P of well-observed Galactic globulars that do not
have collapsed cores. It is found that the cluster metallicity [Fe/H]
correlates somewhat more strongly with P than it does with the present
Galactocentric distances ... | 1995-05-19 | 2009-10-28 | [
"astro-ph"
] | Sidney van den Bergh |
astro-ph/9505087 | Disk M Dwarf Luminosity Function From HST Star Counts | We study a sample of 257 Galactic disk M dwarfs (8<M_V<18.5) found in images
obtained using HST. These include 192 stars in 22 fields imaged with the
repaired WFC2 with mean limiting mag I=23.7 and 65 stars in 162 fields imaged
with the pre-repair Planetary Camera with mean limiting mag V=21.3. We find
that the disk lu... | 1995-05-19 | 2009-10-28 | [
"astro-ph"
] | Andrew Gould, John N. Bahcall, and Chris Flynn |
astro-ph/9505088 | The formation and evolution of large- and superlarge-scale structure in
the universe -I: General Theory | A quantitative theory, based on the Zeldovich approximation, to provide an
approximate description of the evolution of structure is presented. We give an
expression for the characteristic scale of superlarge-scale structure which can
also be applied to power spectra with a Harrison-Zeldovich asymptotic. The
evolution o... | 1995-05-19 | 2007-05-23 | [
"astro-ph"
] | A.Doroshkevich, R.Fong, S.Gottloeber, J.P.Muecket, V.Mueller |
astro-ph/9505090 | Type Ia Supernova Scenarios and the Hubble Sequence | The dependence of the Type Ia supernova (SN Ia) rate on galaxy type is
examined for three currently proposed scenarios: merging of a
Chandrasekhar--mass CO white dwarf (WD) with a CO WD companion, explosion of a
sub--Chandrasekhar mass CO WD induced by accretion of material from a He star
companion, and explosion of a ... | 1995-05-19 | 2009-10-28 | [
"astro-ph"
] | P. Ruiz-Lapuente (1), A. Burkert (2), R. Canal (1) (1- University of
Barcelona, Spain; 2- MPI fuer Astronomie, Heidelberg, Germany) |
astro-ph/9505086 | Harmonic Function Expansion of Nearly Oblate Systems | We show how to develop an expansion of nearly oblate systems in terms of a
set of potential-density pairs. A harmonic (multipole) structure is imposed on
the potential set at infinity, and the density can be made everywhere regular.
We concentrate on a set whose zeroth order functions describe the perfect
oblate sphero... | 1995-05-18 | 2015-06-24 | [
"astro-ph"
] | Dave Syer (CITA) |
astro-ph/9505082 | COSMOLOGICAL GAMMA RAY BURSTS AND THE HIGHEST ENERGY COSMIC RAYS | We discuss a scenario in which the highest energy cosmic rays (CR's) and
cosmological $\gamma$-ray bursts (GRB's) have a common origin. This scenario is
consistent with the observed CR flux above $10^{20}\text{eV}$, provided that
each burst produces similar energies in $\gamma$-rays and in CR's above
$10^{20}\text{eV}$... | 1995-05-18 | 2009-10-28 | [
"astro-ph"
] | Eli Waxman (Institute for Advance Study, Princeton) |
astro-ph/9505085 | X-RAY OUTBURST OF THE PECULIAR SEYFERT GALAXY IC 3599 | We report optical, soft X-ray, and UV observations of the peculiar Seyfert
galaxy IC 3599 using data obtained with ROSAT and IUE. Most remarkably, we
discovered a rapid decrease of the X-ray flux by a factor of about 100 within
one year and a more gradual decrease thereafter. The X-ray spectrum of IC 3599
was soft at f... | 1995-05-18 | 2007-05-23 | [
"astro-ph"
] | D. Grupe, K. Beuermann, K. Mannheim, N. Bade, H.-C. Thomas, D. de
Martino, and A. Schwope |
astro-ph/9505083 | The Confluent System Formalism: I.The Mass Function of Objects in the
Peak Model | This is the first paper of a series of two devoted to develop a practical
method to describe the growth history of bound virialized objects in the
gravitational instability scenario without resorting to $N$-body simulations.
Here we present the basic tool of this method, ``the confluent system
formalism'', which allows... | 1995-05-18 | 2009-10-28 | [
"astro-ph"
] | Alberto Manrique and Eduard Salvador-Sole |
astro-ph/9505084 | Multifractal properties of visible matter distribution: a stochastic
model | Galaxies and clusters distributions show two major properties: (i) the
positions of galaxies and clusters are characterized by a power law
distribution indicating properties with respect to their positions. (ii) The
distribution of masses is also characterized by a power law corresponding to
self similarity of differen... | 1995-05-18 | 2009-09-25 | [
"astro-ph"
] | Francesco Sylos Labini and Luciano Pietronero |
astro-ph/9505072 | Non-thermal radiative pair plasmas: processes and spectra | We study the emission and absorption spectra due to various photon and pair
processes in a non-equilibrium pair plasma containing a significant density of
photons. We present here some preliminary results from Monte-Carlo simulations.
These investigations are likely to be useful in understanding the radiation and
relax... | 1995-05-17 | 2007-05-23 | [
"astro-ph"
] | Ravi P. Pilla and Jacob Shaham (Columbia University) |
astro-ph/9505080 | Galaxy Tracers and Velocity Bias | This paper examines several methods of tracing galaxies in N-body simulations
and their effects on the derived galaxy statistics, especially measurements of
velocity bias. Using two simulations with identical initial conditions, one
following dark matter only and the other following dark matter and baryons,
both collis... | 1995-05-17 | 2009-06-16 | [
"astro-ph"
] | F J Summers, Marc Davis, and August E. Evrard |
astro-ph/9505074 | Towards Understanding the Nuclues of M31 | A simple model of the nucleus of M31 based on {\it HST} images and ground
based spectroscopy is used to investigate the properties of the double nucleus
in M31. The model reproduces the general properties observed in the nucleus of
M31. In particular, it produces symmetric rotation curves, and shifts of the
velocity di... | 1995-05-17 | 2007-05-23 | [
"astro-ph"
] | Philippe Crane (European Southern Observatory) |
astro-ph/9505081 | DWARF GALAXIES AND THE ORIGIN OF INTRACLUSTER MEDIUM | Following the recent suggestion that it is dwarf galaxies in clusters -- as
opposed to large ellipticals -- that provide the intracluster gas, we estimate
the metallicity of the intracluster medium (ICM) in such a case. We derive
analytical expressions for the fraction of mass of dwarf galaxies that is
ejected, and est... | 1995-05-17 | 2009-10-28 | [
"astro-ph"
] | Biman B. Nath and Masashi Chiba |
astro-ph/9505076 | Phase--space Distribution of Volatile Dark Matter | We discuss the phase--space distribution of $\mu$ neutrinos if $\tau$
neutrinos are unstable and decay into $\nu_\mu + scalar$. If this scalar is a
familon or a Majoron, in the generic case the $\nu_\mu$ background is NOT the
straightforward overlap of neutrinos of thermal and decay origins. A delay in
$\nu_\tau$ decay... | 1995-05-17 | 2011-05-23 | [
"astro-ph"
] | S.Ghizzardi and S.A.Bonometto |
astro-ph/9505073 | Numerical Magnetohydrodynamics in Astrophysics: Algorithm and Tests for
Multi-Dimensional Flow | We present for astrophysical use a multi-dimensional numerical code to solve
the equations for ideal magnetohydrodynamics (MHD). It is based on an explicit
finite difference method on an Eulerian grid, called the Total Variation
Diminishing (TVD) scheme, which is a second-order-accurate extension of the
Roe-type upwind... | 1995-05-17 | 2016-08-30 | [
"astro-ph"
] | Dongsu Ryu, T. W. Jones, and Adam Frank |
astro-ph/9505078 | GRAVITATIONAL LENSING OF QUASARS BY THEIR DAMPED LYMAN-ALPHA ABSORBERS | Damped Lyman-alpha absorbers are believed to be associated with galactic
disks. We show that gravitational lensing can therefore affect the statistics
of these systems. First, the magnification bias due to lensing raises faint
QSOs above a given magnitude threshold and thereby enhances the probability for
observing dam... | 1995-05-17 | 2009-10-28 | [
"astro-ph"
] | Matthias Bartelmann and Abraham Loeb (Harvard Univ.) |
astro-ph/9505079 | Non-Gaussian CMBR angular power spectra | In this paper we show how the prediction of CMBR angular power spectra $C_l$
in non-Gaussian theories is affected by a cosmic covariance problem, that is
$(C_l,C_{l'})$ correlations impart features on any observed $C_l$ spectrum
which are absent from the average $C^l$ spectrum. Therefore the average
spectrum is rendere... | 1995-05-17 | 2009-10-28 | [
"astro-ph"
] | J.C.R.Magueijo (MRAO/DAMTP,Cambridge University) |
astro-ph/9505077 | THE APM CLUSTER SURVEY: CLUSTER DETECTION AND LARGE-SCALE STRUCTURE | The APM Cluster Survey was based on a modification of Abell's original
classification scheme for galaxy clusters. Here we discuss the results of an
investigation of the stability of the statistical properties of the cluster
catalogue to changes in the selection parameters. For a poor choice of
selection parameters we f... | 1995-05-17 | 2007-05-23 | [
"astro-ph"
] | G.B. Dalton |
astro-ph/9505075 | A Helical Model for the Compact Jet in 3C345 | We present a simple model for the apparent superluminal motion along curved
trajectories of features observed in the compact radio jet of the quasar 3C345.
The model is inspired by the magneto-hydrodynamic approach of Camenzind (1986),
and assumes a conical geometry of the jet within about three milliarcseconds of
the ... | 1995-05-17 | 2007-05-23 | [
"astro-ph"
] | W. Steffen, J. A. Zensus, T. P. Krichbaum, A. Witzel, S. J. Qian |
astro-ph/9505071 | On the masses of neutron stars | We analyze the currently available observations of X-ray binaries in a
consistent way, to re-determine the masses of the neutron stars in these
systems. In particular, our attention is focussed on a realistic and consistent
assessment of observational uncertainties and sources of systematic error.
Confidence limits for... | 1995-05-16 | 2011-05-23 | [
"astro-ph"
] | M.H. van Kerkwijk (Univ. of Amsterdam, Caltech), J. van Paradijs
(Univ. of Amsterdam, Univ. of Alabama in Huntsville), E.J. Zuiderwijk (Univ.
of Groningen, RGO) |
astro-ph/9505066 | Cosmic Concordance | Observational constraints guide one forcefully to examine models in which the
matter density is substantially less than critical density. Particularly
noteworthy are those which are consistent with inflation. For these models,
microwave background anisotropy, large-scale structure measurements, direct
measurements of t... | 1995-05-16 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | J. P. Ostriker and Paul J. Steinhardt |
astro-ph/9505068 | The Mass of the Milky Way Galaxy | We use the Jaffe model as a global mass distribution for the Galaxy and
determine the circular velocity $v_c$ and the Jaffe radius $r_j$ using the
satellites of the Galaxy, estimates of the local escape velocity of stars, the
constraints imposed by the known rotation curve of the disk, and the Local
Group timing model.... | 1995-05-16 | 2009-10-28 | [
"astro-ph"
] | Christopher S. Kochanek |
astro-ph/9505069 | Induced gravity inflation in the standard model of particle physics | We are considering the cosmological consequences of an induced gravity theory
coupled to the minimal standard model of particle physics. The non-minimal
coupling parameter between gravity and the Higgs field must then be very large,
yielding some new cosmological consequences for the early Universe and new
constraints ... | 1995-05-16 | 2009-10-28 | [
"astro-ph",
"hep-th"
] | J.L. Cervantes-Cota and H. Dehnen |
astro-ph/9505070 | Spectroscopy of HD 77581 and the mass of Vela X-1 | We present new high-resolution, high signal-to-noise optical spectra of HD
77581, the optical counterpart of the X-ray source Vela X-1, and determine
radial velocities from these spectra, as well as from high-resolution IUE
spectra and from digitized photographic spectra. The measured velocities show
strong deviations ... | 1995-05-16 | 2007-05-23 | [
"astro-ph"
] | M.H. van Kerkwijk (Univ. of Amsterdam, Caltech), J. van Paradijs
(Univ. of Amsterdam, Univ. of Alabama in Huntsville), E.J. Zuiderwijk (Univ.
of Groningen, RGO), G. Hammerschlag-Hensberge (Univ. of Amsterdam), L. Kaper
(Univ. of Amsterdam, ESO), C. Sterken (Univ. of Brussels) |
astro-ph/9505067 | Interstellar sulfur isotopes and stellar oxygen burning | A 12C32S, 13C32S, 12C34S, and 12C33S J = 2 - 1 line survey has been made to
study interstellar 32S/34S and 34S/33S ratios from the galactic disk. The four
CS isotopomers were detected in 20 star forming regions with galactocentric
distances between 3 and 9 kpc. From a comparison of line velocities, the C33S J
= 2 - 1 r... | 1995-05-16 | 2009-02-16 | [
"astro-ph"
] | Y.-N. Chin, C. Henkel, J.B. Whiteoak, N. Langer, and E.B. Churchwell |
astro-ph/9505065 | RELATIVISTIC EFFECT OF GRAVITATIONAL DEFLECTION OF LIGHT IN BINARY
PULSARS | An improved formula for the timing of binary pulsars that accounts for the
relativistic deflection of light in the gravitational field of the pulsar's
companion is presented, and the measurability of this effect together with its
variance estimates are discussed. The deflection of the pulsar's beam
trajectory in the gr... | 1995-05-15 | 2015-06-24 | [
"astro-ph",
"gr-qc"
] | Oleg Doroshenko & Sergei Kopeikin |
astro-ph/9505064 | THE VALUE OF \beta FROM THE LG AND ABELL CLUSTER PECULIAR VELOCITIES | Comparing the observed peculiar velocities of the Local Group and of nearby
Abell clusters of galaxies with those predicted using linear perturbation
theory and the 3-D reconstruction algorithm of Branchini \& Plionis (1995) the
value of $\beta$ can be estimated. I show that the anisotropy that causes the
LG motion doe... | 1995-05-15 | 2007-05-23 | [
"astro-ph"
] | Manolis Plionis (SISSA,Trieste, Italy) |
astro-ph/9505062 | Galaxy Selection and the Surface Brightness Distribution | Optical surveys for galaxies are biased against the inclusion of low surface
brightness (LSB) galaxies. Disney (1976) suggested that the constancy of disk
central surface brightness noticed by Freeman (1970) was not a physical result,
but instead was an artifact of sample selection. Since LSB galaxies do exist,
the per... | 1995-05-14 | 2009-10-28 | [
"astro-ph"
] | S.S. McGaugh, G.D. Bothun, J.M. Schombert |
astro-ph/9505063 | EROS VARIABLE STARS : FUNDAMENTAL-MODE AND FIRST OVERTONE CEPHEIDS IN
THE BAR OF THE LARGE MAGELLANIC CLOUD | We present CCD phase-binned light curves at 490 nm for 97 Cepheid variable
stars in the bar of the LMC. The photometry was obtained as part of the French
EROS project and has excellent phase coverage, permitting accurate
decomposition into Fourier components. We identify as `sinusoidal' or
s-Cepheids those stars with p... | 1995-05-14 | 2007-05-23 | [
"astro-ph"
] | J. P. Beaulieu, P. Grison, W. Tobin, J. D. Pritchard, R. Ferlet, A.
Vidal-Madjar, E. Maurice, L. Prevot, C. Gry, J. Guibert, O. Moreau, F.
Tajahmady, E. Aubourg, P. Bareyre, S. Brehin, M. Gros, M. Lachieze-Rey, B.
Laurent, E. Lesquoy, C. Magneville, A. Milsztajn, L. Moscoso, F. Queinnec, J.
Rich, M. Spiro, L. V... |
astro-ph/9505061 | Detecting T Tauri disks with optical long-baseline interferometry | We present synthetic images of disks around T Tauri stars. We calculate
visibility curves in order to study the possibility of directly detecting
thermal emission from T Tauri disks. Total fluxes of T Tauri disks are compared
to the sensitivity of VISA, the interferometric sub-array of the European Very
Large Telescope... | 1995-05-13 | 2007-05-23 | [
"astro-ph"
] | F. Malbet & C. Bertout (Laboratoire d'Astrophysique, Observatoire de
Grenoble, France) |
astro-ph/9505058 | Surface Sputtering from Cold Dark Matter Interactions: Proposed Search
for its Diurnal Modulation | Nuclear recoil cascades induced by Cold Dark Matter (CDM) elastic scattering
can produce the ejection of target atoms from solid surfaces. We calculate the
yield and energy distribution of these sputtered atoms in a variety of
materials. These parameters would suffer a large diurnal modulation induced by
the rotation o... | 1995-05-12 | 2009-10-28 | [
"astro-ph",
"hep-ph",
"nucl-ex"
] | J. I. Collar and F.T.Avignone III (Univ. of South Carolina) |
astro-ph/9505060 | Cosmology with Ultra-light Pseudo-Nambu-Goldstone Bosons | We explore the cosmological implications of an ultra-light
pseudo-Nambu-Goldstone boson. With global spontaneous symmetry breaking scale
$f \simeq 10^{18}$ GeV and explicit breaking scale comparable to MSW neutrino
masses, $M \sim 10^{-3}$ eV, such a field, which acquires a mass $m_\phi \sim
M^2/f \sim H_0$, would have... | 1995-05-12 | 2011-09-29 | [
"astro-ph"
] | J. Frieman, C. Hill, A. Stebbins, and I. Waga |
astro-ph/9505059 | Post Big Bang Processing of the Primordial Elements | We explore the Gnedin-Ostriker suggestion that a post-Big-Bang
photodissociation process may modify the primordial abundances of the light
elements. We consider several specific models and discuss the general features
that are necessary (but not necessarily sufficient) to make the model work. We
find that with any sign... | 1995-05-12 | 2011-08-17 | [
"astro-ph"
] | M. J. Balbes, R. N. Boyd, G. Steigman and D. Thomas (The Ohio State
University Physics Department) |
astro-ph/9505050 | The Cluster Distribution as a Test for Dark Matter Models. I: Clustering
Properties | We present simulations of the cluster distribution in several dark matter
models, using an optimized version of the truncated Zel'dovich approximation
(TZA). We compare them with N-body cluster simulations and find that the TZA
provides a very accurate description of the cluster distribution as long as
fluctuations on ... | 1995-05-11 | 2015-06-24 | [
"astro-ph"
] | S.Borgani, M.Plionis, P.Coles, L.Moscardini |
astro-ph/9505051 | Structure Of The Accretion Disks With Opticallt Thick-Thin Transitions | We present here the solution for accretion disk structure, which describes
continuously the transition between optically thick and optically thin disk
regions. We show that the disk structure equations without advection, used
here, give two branches of solutions which do not intersect for
$L<L_{b}\lesssim 0.6 L_{\rm Ed... | 1995-05-11 | 2007-05-23 | [
"astro-ph"
] | I. V. Artemova, G. S. Bisnovatiy-Kogan, G. Bjornsson, I. D. Novikov |
astro-ph/9505055 | Nuclear Tracks from Cold Dark Matter Interactions in Mineral Crystals: A
Computational Study | Recoiling nuclei from Cold Dark Matter (CDM) elastic scattering interactions
with the constituent elements of some minerals may produce etchable damage
tracks in the crystal structure. Present calculations show that in muscovite
mica, CDM tracks from recoiling potassium atoms could be readily distinguished
from others ... | 1995-05-11 | 2009-10-28 | [
"astro-ph",
"hep-ph",
"nucl-ex"
] | J. I. Collar and F.T.Avignone III (Univ. of South Carolina) |
astro-ph/9505056 | Evidence For Recent Accretion in Nearby Galaxies | I discuss observations of magnitude residuals from the B-band Tully-Fisher
relationship, B-V color, chemical abundance gradients, and asymmetries in the H
I and stellar disks of nearby spiral galaxies within the context of a model in
which small satellites or H I clouds are accreted onto the outer disks of
spiral galax... | 1995-05-11 | 2009-10-28 | [
"astro-ph"
] | Dennis Zaritsky (UCO/Lick Obs., UCSC) |
astro-ph/9505057 | New Results on Pulsating OB Stars | Until very recently the physical mechanism driving oscillations in
$\beta$~Cep and other early type stars has been a mystery. The breakthrough
came with the publication of new OPAL and OP opacity data. Model calculations
with the new opacities have demonstrated that the pulsations are driven by the
familiar $\kappa$-me... | 1995-05-11 | 2008-02-03 | [
"astro-ph"
] | Pawel Moskalik |
astro-ph/9505054 | Low-mass star formation in CG1: a diffraction limited search for
pre-main sequence stars next to NX Puppis | Using adaptive optics at the ESO 3.6m telescope, we obtained diffraction
limited JHK-images of the region around the Herbig AeBe star NX Pup. We clearly
resolved the close companion (sep. 0.128") to NX Pup -- originally discovered
by HST -- and measured its JHK magnitudes. A third object at a separation of
7.0" from NX... | 1995-05-11 | 2011-05-23 | [
"astro-ph"
] | Wolfgang Brandner, Jerome Bouvier, Eva K. Grebel, Eric Tessier, Dolf
de Winter, and Jean-Luc Beuzit |
astro-ph/9505052 | ROSAT HRI observations of IRAS P09104+4109: a massive cooling flow | A ROSAT HRI image of the hyperluminous infrared galaxy IRAS P09104+4109 shows
extended X-ray emission peaked around the central galaxy in a profile
characteristic of a cooling flow. The inferred soft X-ray luminosity is
comparable to that detected with ASCA. The ASCA spectrum is well fit by a
cooling flow spectrum, ind... | 1995-05-11 | 2016-06-08 | [
"astro-ph"
] | A.C. Fabian, C.S. Crawford (Institute of Astronomy) |
astro-ph/9505053 | A 140 Mpc Oscillation of the Abell Cluster Correlation Function | We have developed a parameter-independent method to detect local maxima of
the two-point correlation function. By applying it to two samples of rich Abell
clusters of galaxies with redshift limits z<0.08 and z<0.12 we detect three
maxima centered at 150 Mpc, 300 Mpc and 430 Mpc with confidence levels 80% and
higher. Th... | 1995-05-11 | 2007-05-23 | [
"astro-ph"
] | Veikko Saar, Erik Tago, Jaan Einasto, Maret Einasto, Heinz Andernach |
astro-ph/9505049 | IS THE DENSITY DISTRIBUTION OF CLUSTERS NON-GAUSSIAN ? | The one-point probability distribution function (pdf) is computed for the
$25\hmpc$-smoothed density field of rich clusters of galaxies in the
Abell/\aco\ catalogs. The observed pdf is compared to the pdf s drawn similarly
from mock catalogs of clusters in cosmological simulations of Gaussian and
several non-Gaussian i... | 1995-05-10 | 2007-05-23 | [
"astro-ph"
] | Tsafrir Kolatt |
astro-ph/9505048 | Extensions around z=2 QSOs | Based on an R-band imaging survey of 6 high redshift (z~2) and high
luminosity (M<-28mag) QSOs, we report the detection of extensions in two
radio-quiet and one radio-loud QSO. The extensions are most likely due to the
host galaxies of these QSOs, with luminosities of at least 3-7 per cent of the
QSO luminosity. The mo... | 1995-05-10 | 2016-06-08 | [
"astro-ph"
] | I.Aretxaga, B.J.Boyle, R.J.Terlevich (Royal Greenwich Observatory) |
astro-ph/9505045 | ACCRETION DISCS WITH ACCRETING CORONAE IN AGN. I. SOLUTIONS IN
HYDROSTATIC EQUILIBRIUM | We discuss a model for the central region of radio-quiet AGN in which coronal
accretion is the source of energy for X-ray emission. We start from the Haardt
& Maraschi model but supplement it with pressure balance condition, two
possibilities of the angular momentum transfer and three models of the
disc-corona transiti... | 1995-05-10 | 2015-06-24 | [
"astro-ph"
] | P.T. Zycki, S. Collin-Souffrin and B. Czerny |
astro-ph/9505046 | SN 1986E eight years after outburst: a link to SN 1957D? | We report on the optical recovery of SN~1986E 7.1 and 7.9 years after
explosion. The spectra are dominated by broad H$\alpha$ and [O~I]
$\lambda\lambda$6300,6364 emission lines with a minor contribution from [Ca~II]
$\lambda\lambda$7291,7324 and, possibly, [Fe~II] $\lambda$7155. Compared with
the spectra of the other r... | 1995-05-10 | 2015-06-24 | [
"astro-ph"
] | Enrico Cappellaro, John I. Danziger, Massimo Turatto |
astro-ph/9505047 | Starbursts in barred spiral galaxies. I. Mrk 712: a new Wolf-Rayet
galaxy | We report the discovery of emission from Wolf-Rayet stars in a giant HII
region 4.5 arcsec South of the nucleus of the IRAS barred spiral galaxy Mrk
712. The ratio of WNL to OV stars, estimated from the luminosity of the HeII
4686 line, is 0.2. By comparison with starburst and stellar evolution models,
we find that thi... | 1995-05-10 | 2007-05-23 | [
"astro-ph"
] | Thierry Contini, Emmanuel Davoust (OMP, Toulouse) Suzanne Considere
(Observatoire de Besancon) |
astro-ph/9505043 | The Effect of Physical Assumptions on the Calculation of Microwave
Background Anisotropies | As the data on CMB anisotropies improve and potential cosmological
applications are realized, it will be increasingly important for theoretical
calculations to be as accurate as possible. All modern calculations for
inflationary-inspired fluctuations involve the numerical solution of coupled
Boltzmann equations. There ... | 1995-05-09 | 2008-11-26 | [
"astro-ph"
] | Wayne Hu, Douglas Scott, Naoshi Sugiyama & Martin White |
astro-ph/9505042 | SPIN-ORBIT INTERACTION IN NEUTRON STAR/MAIN SEQUENCE BINARIES AND
IMPLICATIONS FOR PULSAR TIMING | The spin-induced quadrupole moment of a rapidly rotating star changes the
orbital dynamics in a binary system, giving rise to advance (or regression) of
periastron and precession of the orbital plane. We show that these effects are
important in the recently discovered radio pulsar/main sequence star binary
system PSR J... | 1995-05-09 | 2009-10-28 | [
"astro-ph"
] | Dong Lai, Lars Bildsten, Vicky Kaspi |
astro-ph/9505044 | PSR J0045-7319: A DUAL-LINE BINARY RADIO PULSAR | Binary radio pulsars are superb tools for mapping binary orbits, because of
the precision of the pulse timing method (Taylor and Weisberg 1989). To date,
all orbital parameters for binary pulsars have been derived from observations
of the pulsar alone. We present the first observations of the radial velocity
variations... | 1995-05-09 | 2009-10-28 | [
"astro-ph"
] | J.F. Bell, M. S. Bessell, B. W. Stappers, M. Bailes, V. M. Kaspi |
astro-ph/9505041 | Electromagnetic Origin of the CMB Anisotropy in String Cosmology | In the inflationary scenarios suggested by string theory, the vacuum
fluctuations of the electromagnetic field can be amplified by the
time-evolution of the dilaton background, and can grow large enough to explain
both the origin of the cosmic magnetic fields and of the observed CMB
anisotropy. The normalization of the... | 1995-05-09 | 2010-01-06 | [
"astro-ph",
"gr-qc",
"hep-ph",
"hep-th"
] | M. Gasperini, M. Giovannini and G. Veneziano |
astro-ph/9505039 | The Local Halo Density | For almost twenty years models of the Galaxy have included a dark halo
responsible for supporting a substantial fraction of the local rotation
velocity and a flat rotation curve at large distances. Estimates of the local
halo density range from $2\times 10^{-25}\gcmm3$ to $10\times 10^{-25}\gcmm3$.
By careful modeling ... | 1995-05-08 | 2011-09-29 | [
"astro-ph",
"hep-ph"
] | E. Gates, G. Gyuk, M. Turner |
astro-ph/9505037 | 3D non-LTE line formation in the solar photosphere and the solar oxygen
abundance | We study the formation of O I and OH spectral lines in three-dimensional
hydrodynamic models of the solar photosphere. The line source function of the O
I 777 nm triplet is allowed to depart from local thermodynamic equilibrium
(LTE), within the two-level-atom approximation. Comparison with results from 1D
models show ... | 1995-05-08 | 2007-05-23 | [
"astro-ph"
] | Dan Kiselman & {\AA}ke Nordlund |
astro-ph/9505036 | Probability Distribution of the Hubble Constant and the Age of the
Universe Inferred from the Local Observation | We present a method to compute the probability distribution function of the
(true) Hubble constant and the age of the universe, given the estimate of the
Hubble constant in our nearby galaxy samples. Our method takes into account
both the observational errors and the cosmic variance, and enables to
quantitatively compu... | 1995-05-08 | 2009-10-28 | [
"astro-ph"
] | T.Nakamura & Y.Suto |
astro-ph/9505040 | Ground-based Discovery of Cepheids and Miras in M101 | We have identified 4 Cepheids and 5 Miras using KPNO 4m BVRI images of an
outer field in M101. The Cepheid and Mira periods range from 30 to 60 days and
350 to 800 days, respectively. We derive independent Cepheid and Mira distance
moduli that agree within experimental uncertainties. We find a true distance
modulus of ... | 1995-05-08 | 2009-10-28 | [
"astro-ph"
] | David R. Alves and Kem H. Cook |
astro-ph/9505038 | Interpreting New Data on Large Scale Bulk Flows | We study the implications of a recent estimate of the bulk flow of a sample
of galaxies containing supernovae type Ia by Riess, Press, and Kirshner. We
find that their results are quite consistent with power spectra from several
currently popular models of structure formation, but that the sample is as yet
too sparse t... | 1995-05-08 | 2009-10-28 | [
"astro-ph"
] | Richard Watkins (Michigan) and Hume A. Feldman (Princeton) |
astro-ph/9505034 | Neutrinos from SN 1987A: Can they tell even more ? | The neutrino signal from SN~1987A provides an excellent opportunity to
constrain physical theories for matter at extreme conditions and properties of
particles that are produced in supernova (SN) cores. Phase transitions in the
supranuclear equation of state (EOS) may change the cooling history of the
collapsed stellar... | 1995-05-07 | 2007-05-23 | [
"astro-ph",
"hep-ph"
] | H.-Thomas Janka (Department of Astronomy and Astrophysics, University
of Chicago) |
astro-ph/9505035 | Davis-Greenstein alignment of non-spherical grains | Paramagnetic alignment of non-spherical dust grains rotating at thermal
velocities is studied. The analytical solution is found for the alignment
measure of oblate grains. Perturbative approach is used for solving the
problem. It is shown that even the first approximation of the suggested
iteration procedure provides t... | 1995-05-07 | 2009-10-28 | [
"astro-ph"
] | A. Lazarian |
astro-ph/9505033 | LYMAN-ALPHA FOREST CORRELATIONS USING NEIGHBOR COUNTS | We present a novel technique for calculating the two-point autocorrelation
function of the Lyman-alpha forest based on the relation between the two-point
correlation function and the Neighbor Probability Distribution Functions. The
technique appears to reduce the scatter in estimates of the correlation
function by a fa... | 1995-05-06 | 2009-10-28 | [
"astro-ph"
] | Avery Meiksin (Chicago) and Francois R. Bouchet (Paris) |
astro-ph/9505032 | GEMINGA'S SOFT X-RAY EMISSION AND THE STRUCTURE OF ITS SURFACE | We present a model to explain the decrease in the amplitude of the pulse
profile with increasing energy observed in Geminga's soft X-ray surface thermal
emission. We assume the presence of plates surrounded by a surface with very
distinct physical properties: these two regions emit spectra of very distinct
shapes which... | 1995-05-05 | 2016-08-15 | [
"astro-ph"
] | Dany Page (Instituto de Astronomia, UNAM, Mexico), Yu.A. Shibanov
(Ioffe Physical-Technical Institute, St Petersburg) and V. E. Zavlin (Max
Planck Institut f\"ur Extraterrestrische Physik, Garching) |
astro-ph/9505029 | Large Scale Structure Tests of Warm Dark Matter | Warm dark matter (WDM) is an intriguing model of structure formation from the
point of view of both cosmology and particle physics. We consider a
one-parameter family of WDM models. The linear power spectra for these models
is calculated and compared with the corresponding spectra for cold dark matter
(CDM), hot dark m... | 1995-05-05 | 2010-11-30 | [
"astro-ph"
] | Stephane Colombi, Scott Dodelson, and Lawrence M. Widrow |
astro-ph/9505028 | Biological Effects of Stellar Collapse Neutrinos | Massive stars in their final stages of collapse radiate most of their binding
energy in the form of MeV neutrinos. The recoil atoms that they produce in
elastic scattering off nuclei in organic tissue create radiation damage which
is highly effective in the production of irreparable DNA harm, leading to
cellular mutati... | 1995-05-05 | 2009-10-28 | [
"astro-ph"
] | J.I.Collar (G.P.S., Univ. Paris 7) |
astro-ph/9505027 | Numerical study of the tidal interaction of a star and a massive black
hole | We present a formalism well adapted to the numerical study of the encounter
of an ordinary main sequence star with a massive black hole. Symmetry
considerations, the use of a well adapted moving grid and a well adapted moving
frame along with integration of the partial differential equations by means of
pseudo-spectral... | 1995-05-05 | 2011-05-23 | [
"astro-ph"
] | J.A. Marck, A. Lioure and S. Bonazzola |
astro-ph/9505025 | Gravitational Radiation during Thorne-Zytkow object formation | Calculation of gravitational radiation during binary inspiral leading to
possible formation of a Thorne-Zytkow (TZ) object (a neutron star inside a
supergiant core) is performed. The calculations were done for polytropic
density distributions with different indeces $n$, as well as for realistic
models of supergiants. A... | 1995-05-05 | 2011-05-23 | [
"astro-ph"
] | S.N. Nazin, K.A. Postnov (Sternberg Astronomical Inst., Moscow,
Russia) |
astro-ph/9505026 | The stability of uniformly rotating stellar disks | We explore a series expansion method to calculate the modes of oscillations
for a variety of uniformly rotating finite disks, either with or without a dark
halo. Since all models have the same potential, this survey focuses on the role
of the distribution function in stability analyses. We show that the stability
behav... | 1995-05-05 | 2011-05-23 | [
"astro-ph"
] | P. Vauterin and H. Dejonghe |
astro-ph/9505031 | ACCRETION OF HOT DARK MATTER ONTO SLOWLY MOVING COSMIC STRINGS | Cosmic strings with small-scale structure have a coarse-grained mass per unit
length $\mu$ which is larger than the string tension. This leads to an
effective Newtonian gravitational line source and to a characteristic
translational velocity which is smaller than for strings without small-scale
structure. Here, the acc... | 1995-05-05 | 2009-10-28 | [
"astro-ph",
"hep-ph"
] | Anthony N. Aguirre and Robert H. Brandenberger (Brown Univ.) |
astro-ph/9505030 | Causality, randomness, and the microwave background | Fluctuations in the cosmic microwave background (CMB) temperature are being
studied with ever increasing precision. Two competing types of theories might
describe the origins of these fluctuations: ``inflation'' and ``defects''. Here
we show how the differences between these two scenarios can give rise to
striking sign... | 1995-05-05 | 2010-04-08 | [
"astro-ph"
] | Andreas Albrecht(Imperial), David Coulson(Penn), Pedro
Ferreira(Imperial), Joao Magueijo(DAMTP, MRAO) |
astro-ph/9505024 | A Generalized $K$ correction for Type Ia Supernovae: Comparing R-band
Photometry Beyond z=0.2 with B, V, and R-band Nearby Photometry | Photometric measurements show that as a group nearby type Ia supernovae
follow similar lightcurves and reach similar peak magnitudes Thus, these
supernovae can serve as standard candles or calibrated candles at cosmological
distances. Magnitudes of local and distant supernovae, both in the same filter
band, are compare... | 1995-05-04 | 2014-10-13 | [
"astro-ph"
] | Alex Kim, Ariel Goobar, and Saul Perlmutter |
astro-ph/9505017 | Distributions of Fourier Modes of Cosmological Density Fields | We discuss the probability distributions of Fourier modes of cosmological
density fields using the central limit theorem as it applies to weighted
integrals of random fields. It is shown that if the cosmological principle
holds in a certain sense, i.e., the universe approaches homogeneity and
isotropy sufficiently rapi... | 1995-05-04 | 2009-10-28 | [
"astro-ph"
] | Zuhui Fan and J. M. Bardeen |
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