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/9508001 | The Abundance of Boron in Evolved A- and B-Type Stars | Boron abundances in A- and B-type stars may be a successful way to track
evolutionary effects in these hot stars. The light elements -- Li, Be, and B --
are tracers of exposure to temperatures more moderate than those in which the
H-burning CN-cycle operates. Thus, any exposure of surface stellar layers to
deeper layer... | 1995-08-01 | 2007-05-23 | [
"astro-ph"
] | Kim A. Venn, David L. Lambert, Michael Lemke |
astro-ph/9508004 | Hydrodynamical Simulations of Corotating Interaction Regions and
Discrete Absorption Components in Rotating O-Star Winds | We present two-dimensional hydrodynamical simulations of corotating stream
structure in the wind from a rotating O star, together with resulting synthetic
line profiles showing discrete absorption components (DACs). An azimuthal
variation is induced by a local increase or decrease in the radiative driving
force, as wou... | 1995-08-01 | 2009-10-28 | [
"astro-ph"
] | S. R. Cranmer and S. P. Owocki (Bartol Research Institute) |
astro-ph/9508008 | Modelling the Galactic Bar Using Red Clump Stars | The color-magnitude diagrams of $\sim 1 \times 10^6$ stars obtained for 19
fields towards the Galactic bulge with the OGLE project reveal a well-defined
population of bulge red clump stars. We found that the distributions of the
extinction-adjusted apparent magnitudes of red clump stars in fields lying at
$l=\pm5\deg$ ... | 1995-08-01 | 2007-05-23 | [
"astro-ph"
] | K. Z. Stanek, M. Mateo, A. Udalski, M. Szymanski, J. Kaluzny, M.
Kubiak, W. Krzeminski (OGLE collaboration) |
astro-ph/9508006 | Gravitational Microlensing, The Distance Scale, And The Ages | A high optical depth to gravitational microlensing towards the galactic bulge
is consistent with current models of the galactic bar. The low optical depth
towards the LMC can probably be accounted for by the ordinary stars in our
galaxy and in the LMC itself. No conclusive evidence is available yet for the
presence or ... | 1995-08-01 | 2016-08-30 | [
"astro-ph"
] | Bohdan Paczynski |
astro-ph/9508007 | Polarization of Astronomical Maser Radiation. III. Arbitrary Zeeman
Splitting and Anisotropic Pumping | General solutions of the maser polarization problem are presented for
arbitrary absorption coefficients. The results are used to calculate
polarization for masers permeated by magnetic fields with arbitrary values of
\xB, the ratio of Zeeman splitting to Doppler linewidth, and for anisotropic
pumping. The $\xb \to 0$ l... | 1995-08-01 | 2009-10-28 | [
"astro-ph"
] | Moshe Elitzur (University of Kentucky) |
astro-ph/9508003 | The Open Universe Grishchuk-Zel'dovich Effect | The Grishchuk--Zel'dovich effect is the contribution to the microwave
background anisotropy from an extremely large scale adiabatic density
perturbation, on the standard hypothesis that this perturbation is a typical
realization of a homogeneous Gaussian random field. We analyze this effect in
open universes, correspon... | 1995-08-01 | 2008-11-26 | [
"astro-ph",
"gr-qc"
] | Juan Garcia-Bellido, Andrew R Liddle, David H Lyth and David Wands |
astro-ph/9508005 | X-ray Constraints on the Intrinsic Shape of the Lenticular Galaxy NGC
1332 | We have analyzed ROSAT PSPC X-ray data of the optically elongated S0 galaxy
NGC 1332 with the purposes of constraining the intrinsic shape of its
underlying mass and presenting a detailed investigation of the uncertainties
resulting from the assumptions underlying this type of analysis. The X-ray
isophotes are elongate... | 1995-08-01 | 2009-10-28 | [
"astro-ph"
] | David A. Buote and Claude R. Canizares |
astro-ph/9507117 | Inflaton Potential Reconstruction and Generalized Equations of State | We extend a previous analysis concerning cosmological fluids with generalized
equations of state in order to study inflationary scenarios. In the framework
of the slow-roll approximation we find the expressions for the perturbation
parameters $\epsilon$, $\eta$ and the density perturbation spectra in terms of
the adiab... | 1995-07-31 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | G. Mangano, G. Miele and C. Stornaiolo |
astro-ph/9507118 | Predicted Lens Redshifts and Magnitudes for Gravitational Lenses | For suitable gravitational lens systems with unknown lens redshifts, the
redshifts and brightnesses (in different colours) of the lenses are predicted
for a variety of cosmological models, for both elliptical and spiral galaxy
lenses. Besides providing hints as to which systems should be observed with a
realistic chanc... | 1995-07-31 | 2007-05-23 | [
"astro-ph"
] | Phillip Helbig |
astro-ph/9507115 | The Optical Gravitational Lensing Experiment. Eclipsing Binaries and
SX~Phe Stars in Omega~Cen and 47~Tuc | Extensive monitoring of the central part of Omega Cen has lead to the
discovery of 12 eclipsing binaries and 9 SX~Phe stars. We report also finding 6
contact binaries in the field of 47~Tuc. | 1995-07-30 | 2019-08-15 | [
"astro-ph"
] | J. Kaluzny, M. Kubiak, M. Szymanski, A. Udalski (Warsaw University) W.
Krzeminski (Las Campanas Observatory), M. Mateo (University of Michigan) |
astro-ph/9507116 | A New Astrophysical Constraint on Radiatively Decaying Neutrinos | We calculate constraints on radiatively decaying neutrinos from the recent
detection of singly ionized helium in the diffuse intergalactic medium (IGM) at
$z \simeq 3.3$. We consider a model in which neutrinos predominantly decay into
invisible relativistic particles with a rate $\tau^{-1}$, and with a small
branching ... | 1995-07-30 | 2010-11-30 | [
"astro-ph"
] | Shiv K. Sethi |
astro-ph/9507114 | Towards Understanding Gamma-Ray Bursts | $\gamma$-ray bursts (GRBs) have puzzled astronomers since their accidental
discovery in the sixties. The BATSE detector on COMPTON-GRO satellite has been
detecting GRBs for the last four years at a rate of one burst per day. Its
findings has revolutionized our ideas about the nature of these objects. In
this lecture I ... | 1995-07-30 | 2007-05-23 | [
"astro-ph"
] | Tsvi Piran |
astro-ph/9507113 | Cluster Accretion Shocks as Possible Acceleration Sites for Ultra High
Energy Protons below the Greisen Cutoff | Three-dimensional hydrodynamic simulations of large scale structure in the
Universe have shown that accretion shocks form during the gravitational
collapse of one-dimensional caustics, and that clusters of galaxies formed at
intersections of the caustics are surrounded by these accretion shocks.
Estimated speed and cur... | 1995-07-29 | 2009-10-28 | [
"astro-ph"
] | Hyesung Kang (Pusan N.U.), Dongsu Ryu (Chungnam N.U.) and T. W. Jones
(U. of Minnesota) |
astro-ph/9507112 | Direct Detection of Gravity Waves through High-Precision Astrometry | It is generally accepted that a first ever direct detection of gravity waves
would herald a new era in astronomy and in fundamental physics. Ever since the
early sixties, increasingly larger human and material resources are being
invested in the detection effort. Unfortunately, the gravity wave effects one
has had to e... | 1995-07-28 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | Redouane Fakir |
astro-ph/9507110 | The Soft-X-Ray Spectral Shape of X-Ray-Weak Seyferts | (I) We observed eight Seyfert~2s and two X--ray--weak Seyfert~1/QSOs with the
ROSAT PSPC, and one Seyfert~2 with the ROSAT HRI. These targets were selected
from the Extended 12\um\ Galaxy Sample. (II) Both Seyfert~1/QSOs vary by
factors of 1.5---2. The photon indices steepen in the more luminous state,
consistent with ... | 1995-07-27 | 2009-10-28 | [
"astro-ph"
] | Brian Rush and Matthew A. Malkan (UCLA) |
astro-ph/9507111 | Cosmological Formation of Low-Mass Objects | We investigate the early formation of bound objects with masses comparable to
the cosmological Jeans mass (10^5 solar masses). We follow the growth of
isolated spherically symmetric density peaks starting from the linear
perturbative regime. The initial parameters correspond to density peaks of
various widths and heigh... | 1995-07-27 | 2009-10-28 | [
"astro-ph"
] | Zoltan Haiman, Anne A. Thoul, and Abraham Loeb (Harvard Univ.) |
astro-ph/9507106 | Molecular signals from primordial clouds at high redshift | The possibility to detect cosmological signals from the post-recombination
Universe is one of the main aims of modern cosmology. In a previous paper we
emphasized the role that elastic resonant scattering through LiH molecules can
have in dumping primary CBR anisotropies and raising secondary signals. Here we
extend ou... | 1995-07-26 | 2008-11-26 | [
"astro-ph"
] | R. Maoli (Paris), V. Ferrucci (Rome), F. Melchiorri (Rome), M. Signore
(Paris), and D. Tosti (Rome) |
astro-ph/9508002 | Overtures to the pulsational instability of ZZ Ceti variables | Results of nonradial, nonadiabatic pulsation calculations on hydrogen-rich
white dwarf models are presented. In contrast to earlier attempts, the modeling
builds on hydrodynamically simulated convective surface layers supplemented
with standard interior models. Based on our stellar models and despite of
various simple ... | 1995-07-26 | 2007-05-23 | [
"astro-ph"
] | Alfred Gautschy (Max-Planck Inst. f\"ur Astrophysik, Garching, Germany
and Universit\"at Basel, Switzerland), Hans-G\"unter Ludwig (Max-Planck Inst.
f\"ur Astrophysik, Garching, Germany), Bernd Freytag (Universit\"at Kiel,
Germany) |
astro-ph/9507108 | Post-Inflation Reheating in an Expanding Universe | An analytic means of studying the resonant decay of the inflaton field is
developed for the case of background expansion, $H \neq 0$. It is shown that
the parametric resonance in the inflaton's decay need not disappear when the
expansion of the universe is taken into account, although the total number of
particles prod... | 1995-07-26 | 2009-10-28 | [
"astro-ph",
"gr-qc",
"hep-ph"
] | David I. Kaiser |
astro-ph/9507107 | Substructure: Clues to the Formation of Clusters of Galaxies | We have examined the spatial distribution of substructure in clusters of
galaxies using Einstein X-ray observations. Subclusters are found to have a
markedly anisotropic distribution that reflects the surrounding matter
distribution on supercluster scales. Our results suggest a picture in which
cluster formation procee... | 1995-07-26 | 2009-10-28 | [
"astro-ph"
] | Michael J. West, Christine Jones and William Forman |
astro-ph/9507109 | Hubble Space Telescope Observations of White Dwarfs in the Globular
Cluster M4 | With the Wide Field Planetary Camera 2 (WFPC2) on the Hubble Space Telescope,
we have discovered in M4 (NGC 6121, C 1620-264) the first extensive sequence of
cooling white dwarfs seen in a globular cluster. Adopting a distance modulus of
(m-M)_V = 12.65 and a reddening of E(B-V) = 0.37, we show that the sequence,
which... | 1995-07-26 | 2009-10-28 | [
"astro-ph"
] | Harvey B. Richer, Gregory G. Fahlman, Rodrigo A. Ibata, Peter B.
Stetson, Roger A. Bell, Michael Bolte, Howard E. Bond, William E. Harris,
James E. Hesser, Georgi Mandushev, Carlton Pryor and Don A. VandenBerg |
astro-ph/9507101 | Dust in the Cores of Early-Type Galaxies | The dust properties of all early-type galaxies imaged with the Planetary
Camera of the HST in cycles I-III are examined. Dust is detected in 31 out of
64 galaxies, although the sample is biased against the detection of dust. From
the distribution of observed axis ratios of the dust features it is inferred
that 78 \pm 1... | 1995-07-25 | 2009-10-28 | [
"astro-ph"
] | P.G. van Dokkum, M. Franx |
astro-ph/9507104 | Lateral Expansion of the Bridges of Cygnus A and other Powerful Radio
Sources | Measurements of the width of the radio bridge at several locations along the
bridge for each of four powerful extended radio sources are presented. Adopting
a few simple assumptions, these measurements may be used to predict the radio
surface brightness as a function of position across the radio bridge. The
predicted a... | 1995-07-25 | 2007-05-23 | [
"astro-ph"
] | Greg F. Wellman & Ruth A. Daly |
astro-ph/9507105 | The Use of Radio Observations to Probe Ambient Gas Densities | The radio properties of powerful extended radio sources may be used to
estimate the ambient gas density in the vicinity of radio lobes. A sample of 27
radio lobes from 14 radio galaxies and of 14 radio lobes from 8 radio loud
quasars was constructed using sources from the published literature with
sufficient radio info... | 1995-07-25 | 2007-05-23 | [
"astro-ph"
] | Greg. F. Wellman & Ruth. A. Daly |
astro-ph/9507097 | Analysis of a Hubble Space Telescope Search for Red Dwarfs: Limits on
Baryonic Matter in the Galactic Halo | We re-examine a deep {\it Hubble Space Telescope} pencil-beam search for red
dwarfs, stars just massive enough to burn Hydrogen. The authors of this search
(Bahcall, Flynn, Gould \& Kirhakos 1994) found that red dwarfs make up less
than 6\% of the galactic halo. First, we extrapolate this result to include
brown dwarfs... | 1995-07-25 | 2009-10-28 | [
"astro-ph"
] | David S. Graff, Katherine Freese (University of Michigan) |
astro-ph/9507099 | The Molecular Front in Galaxies II : Galactic-scale Gas Phase Transition
of HI and H2 | We have examined the distribution of HI and H$_2$ gases in four face-on
galaxies by using the observed dat a of CO and HI line emissions from the
literatures. We demonstrate that the gas phase transition of HI and H$_2$
occurs suddenly within a narrow range of radi us, which we call the molecular
front. We have tried t... | 1995-07-25 | 2007-05-23 | [
"astro-ph"
] | Mareki Honma, Yoshiaki Sofue, and Nobuo Arimoto |
astro-ph/9507103 | Monte Carlo Simulations of Macho Parallaxes From a Satellite | Three ongoing microlensing experiments have found more candidate events than
expected from the known stars. These experiments measure only one parameter of
the massive compact halo objects (machos), the magnification time scale of the
events. More information is required to understand the nature of the machos. A
satell... | 1995-07-25 | 2009-10-28 | [
"astro-ph"
] | Thomas Boutreux and Andrew Gould |
astro-ph/9507102 | Unresolved Wind-Driven Shells and the Supersonic Velocity Dispersion in
Giant HII Regions | The presence of giant shells or loops in giant HII regions are clear witness
of the mechanical energy input from massive stars. Here we evaluate the impact
that winds may have on the structure of giant nebulae and on their supersonic
velocity dispersion. We follow the suggestion from Chu \& Kennicutt (1994) to
see if a... | 1995-07-25 | 2016-08-30 | [
"astro-ph"
] | G. Tenorio-Tagle, C. Munoz-Tunon, R. Cid Fernandes |
astro-ph/9507100 | Large Scale Peculiar Velocities: Effects from Superclusters | We study the gravitational influence of very large scale structures, as
traced by clusters of galaxies, on the Local Group [LG] motion and the large
scale flows. We derive from the distribution of Abell clusters within
$300~$Mpc/h the overdensity field on a 3--D grid of spacing $5~$Mpc/h, then we
solve the Poisson equa... | 1995-07-25 | 2007-05-23 | [
"astro-ph"
] | R. Scaramella |
astro-ph/9507098 | The Most Completely Sampled Rotation Curves for Galaxies | We have compiled high-resolution position-velocity diagrams observed along
the major axes of nearby spiral galaxies in the CO-line emission, and derived
rotation curves for the inner regions of the galaxies. We have combined the
inner rotation curves with the outer HI and optical rotation curves to obtain
the total rot... | 1995-07-25 | 2009-10-28 | [
"astro-ph"
] | Yoshiaki Sofue |
astro-ph/9507086 | A Tighter Constraint on post-Newtonian Gravity using Millisecond Pulsars | Some theories of gravity predict the existence of preferred-frame effects and
violations of conservation of energy and momentum. General relativity predicts
no such effects. In the parameterised post-Newtonian (PPN) formalism, the
parameter, \al3 $\equiv 0$ if these effects do not exist. The period
derivatives ($\dot{P... | 1995-07-24 | 2009-10-28 | [
"astro-ph"
] | J. F. Bell |
astro-ph/9507087 | Optical Observations of the Binary Millisecond Pulsars J2145-0750 and
J0034-0534 | We report on optical observations of the low-mass binary millisecond pulsar
systems J0034-0534 and J2145-0750. A faint (I=23.5) object was found to be
coincident with the timing position of PSR J2145-0750. While a galaxy or
distant main-sequence star cannot be ruled out, its magnitude is consistent
with an ancient whit... | 1995-07-24 | 2009-10-28 | [
"astro-ph"
] | J. F. Bell, S. R. Kulkarni, M. Bailes, E. M. Leitch, A. G. Lyne |
astro-ph/9507092 | A 2572 and HCG 94 - galaxy clusters but not as we know them. An X-ray
case study of optical misclassifications | We present the results of a spectral-imaging analysis of X-ray data obtained
with the Position Sensitive Proportional Counter aboard the ROSAT Observatory
in a 32 ks pointed observation of Hickson's Compact Group (HCG) #94. Besides
HCG94, A2572, a richness class 0 Abell cluster, is also contained in the
central region ... | 1995-07-24 | 2015-06-24 | [
"astro-ph"
] | H. Ebeling, C. Mendes de Oliveira, D.A. White |
astro-ph/9507093 | Beltrami Equation and Cluster Lensing: Characteristic Equations and
Applications | Arclets in clusters of galaxies can be used to determine the lens mapping and
not only to constrain the mass density of the cluster. Multiply imaged arclets
are therefore easily identified without further modelling. | 1995-07-24 | 2007-05-23 | [
"astro-ph"
] | Schramm, T |
astro-ph/9507095 | Void Sizes and CMBR Fluctuations | Following Blumenthal \etl \cite{blu} and Piran \etl \cite{Pi} I discuss a
simple model for the gravitational formation of voids. This model enables us to
estimate the primordial perturbation required on the scale of voids. A
comparison of this condition with the constraints on the spectrum of
fluctuations derived from ... | 1995-07-24 | 2007-05-23 | [
"astro-ph"
] | Tsvi Piran |
astro-ph/9507096 | The theoretical calculation of the Rossby number and the `non-local'
convective overturn time for pre-main sequence and early post-main sequence
stars | This paper provides estimates of convective turnover time scales for Sun-like
stars in the pre-main sequence and early post-main sequence phases of
evolution, based on up-to-date physical input for the stellar models. In this
first study, all models have solar abundances, which is typical of the stars in
the Galactic d... | 1995-07-24 | 2007-05-23 | [
"astro-ph"
] | Yong -Cheol Kim and Pierre Demarque |
astro-ph/9507094 | Dipole Anisotropy from an Entropy Gradient | It is generally accepted that the observed CMBR dipole arises from the motion
of the local group relative to the CMBR frame. An alternative interpretation is
that the dipole results from an ultra-large scale ($\lambda > 100 c/H_0)$
isocurvature perturbation. Recently it was argued that this alternative
possibility is r... | 1995-07-24 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | David Langlois and Tsvi Piran |
astro-ph/9507091 | Good Abundances from Bad Spectra: I. Techniques | We have developed techniques to extract true iron abundances and surface
gravities from spectra of the type provided by the multiple-object fibre-fed
spectroscopic radial-velocity surveys underway with 2dF, HYDRA, NESSIE, and the
forthcoming Sloan survey. Our method is optimised for low S/N, intermediate
resolution blu... | 1995-07-24 | 2007-05-23 | [
"astro-ph"
] | J.Bryn Jones (Cardiff), Gerard Gilmore (IoA Cambridge) and Rosemary
F.G. Wyse (CFPA Berkeley; IoA Cambridge; JHU) |
astro-ph/9507088 | Star luminosity function as an age indicator for the Dwarf spheroidal
Leo I | Star luminosity function, already recognized as an age indicator for old
galactic globular clusters, can be used to contrains the age of younger stellar
systems like the nearby dwarfs spheroidal Leo I. We compare the observed
luminosity function of Leo I, presented by Lee et al. 1993, with theoretical
expectations for ... | 1995-07-23 | 2007-05-23 | [
"astro-ph"
] | F. Caputo, V. Castellani, S. Degl'Innocenti |
astro-ph/9507090 | High Resolution IRAS Maps and IR Emission of M31 --- II. Diffuse
Component and Interstellar Dust | Large-scale dust heating and cooling in the diffuse medium of M31 is studied
using the HiRes IRAS maps in conjunction with UV, optical (UBV) and the HI
maps. A dust heating/cooling model is developed based on a radiative transfer
model which assumes a `Sandwich' configuration of dust and stars and takes
fully into acco... | 1995-07-23 | 2009-10-28 | [
"astro-ph"
] | Cong Xu (MPIK, Heidelberg) and George Helou (IPAC, Pasadena) |
astro-ph/9507089 | High Resolution IRAS Maps and IR Emission of M31 --- I. Morphology and
Sources | The morphology of the IR emission and the properties of discrete FIR sources
in M31 disk are studied using the HiRes maps from IRAS. Very thin and bright
FIR arm segments are shown in these maps, which have similar structure as the
HI gas but with much enhanced arm/inter-arm contrast, typically a factor of 5
on the 60$... | 1995-07-23 | 2009-10-28 | [
"astro-ph"
] | Cong Xu (MPIK, Heidelberg) and George Helou (IPAC, Pasadena) |
astro-ph/9507085 | Volume Expansion Rate and The Age of The Universe | Under four assumptions such that 1) Einstein's theory of gravity is correct,
2) existence of foliation by geodesic slicing, 3) the trace of the extrinsic
curvature, $K$, is negative at the present time in observed region, that is,
the observed universe is now expanding, 4) the strong energy condition is
satisfied, we s... | 1995-07-22 | 2016-06-08 | [
"astro-ph",
"gr-qc"
] | Takashi Nakamura, Ken-ichi Nakao, Takeshi Chiba, and Tetsuya Shiromizu |
astro-ph/9507084 | Non-linear Reconstruction of the Large Scale Structure | The linear algorithm of the the full non-linear large scale structure of
Gaussian random fields is extended here to to perform non-linear CRs. The
procedure consists of: (1) Using linear CR of low resolution data to construct
a high resolution realization of the underlying field, as if the linear theory
is valid; (2) T... | 1995-07-22 | 2016-08-30 | [
"astro-ph"
] | V. Bistolas and Y. Hoffman |
astro-ph/9507083 | Topology of the Galaxy Distribution | The history and the major results of the study of the topology of the
large-scale structure are briefly reviewed. Two techniques based on percolation
theory and the genus curve are discussed. The preliminary results of the
percolation analysis of the Wiener reconstruction of the IRAS $1.2 Jy$ redshift
catalog are repor... | 1995-07-22 | 2008-02-03 | [
"astro-ph"
] | Sergei F. Shandarin (University of Kansas, Lawrence, U.S.A.) |
astro-ph/9507082 | Three-dimensional Burgers' Equation as a Model for the Large-Scale
Structure Formation in the Universe | As galaxy redshift surveys probe deeper into the universe, they uncover ever
more dramatic structures in the large-scale distribution of galaxies. In
particular, the CfA2 and SSRS2 surveys to an apparent magnitude limit of 15.5
exhibit an impressive complex of sheets, filaments, and clusters. The formation
of the large... | 1995-07-22 | 2008-02-03 | [
"astro-ph"
] | Sergei F. Shandarin (University of Kansas, Lawrence, Kansas) |
astro-ph/9507080 | Weighing the Universe with the Cosmic Microwave Background | Variations in $\Omega$, the total density of the Universe, leave a clear and
distinctive imprint on the power spectrum of temperature fluctuations in the
cosmic microwave background (CMB). This signature is virtually independent of
other cosmological parameters or details of particular cosmological models. We
evaluate ... | 1995-07-21 | 2009-10-28 | [
"astro-ph",
"hep-ph"
] | Gerard Jungman (Syracuse), Marc Kamionkowski (Columbia), Arthur
Kosowsky (Harvard), and David N. Spergel (Princeton) |
astro-ph/9507081 | Improved Ways to Compare Simulations to Data | Theoretical models for structure formation with Gaussian initial fluctuations
have been worked out in considerable detail and compared with observations on
various scales. It is on nonlinear scales $\lsim 10 \ h^{-1}\ {\rm Mpc}$ that
the greatest differences exist between $\Omega=1$ models that have been
normalized to ... | 1995-07-21 | 2007-05-23 | [
"astro-ph"
] | Joel R. Primack (Santa Cruz Institute for Particle Physics, UCSC) |
astro-ph/9507077 | Using the kinematic Sunyaev-Zeldovich effect to determine the peculiar
velocities of clusters of galaxies | We have investigated the possibility of inferring peculiar velocities for
clusters of galaxies from the Doppler shift of scattered cosmic microwave
background (CMB) photons. We find that if the core radius of the gas
distribution or the beam size of the instrument is larger than 3-7 arcminutes,
then the maximum attaina... | 1995-07-20 | 2015-06-24 | [
"astro-ph"
] | Martin G. Haehnelt and Max Tegmark |
astro-ph/9507075 | Gravitational lensing and Catastrophe theory | Singularities of caustics appeared in gravitational lensing effect are
discussed analytically. Multipole expansion model of lensing object is mainly
studied since it is tractable and universal. Our analyses are confirmed by
numerical calculations and applied to multiple quasar system of PG1115+080.
Consistencies with e... | 1995-07-20 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | Y.Kakigi, T.Okamura and T.Fukuyama |
astro-ph/9507079 | The CANADA-FRANCE REDSHIFT SURVEY VI: Evolution of the galaxy luminosity
function to z ~ 1 | The cosmic evolution of the field galaxy population has been studied out to a
redshift of z ~ 1 using a sample of 730 I-band selected galaxies, of which 591
have secure redshifts with median <z> ~ 0.56. The tri-variate luminosity
function phi(M,color,z) shows unambiguously that the population evolves and
that this evol... | 1995-07-20 | 2009-10-28 | [
"astro-ph"
] | S.J. Lilly, L. Tresse, F. Hammer, David Crampton, O. Le Fevre |
astro-ph/9507078 | On Radio Detection of Ultra-High Energy Neutrinos in Antarctic Ice | Interactions of ultrahigh energy neutrinos of cosmological origin in large
volumes of dense, radio-transparent media can be detected via coherent
Cherenkov emission from accompanying electromagnetic showers. Antarctic ice
meets the requirements for an efficient detection medium for a radio frequency
neutrino telescope.... | 1995-07-20 | 2011-09-09 | [
"astro-ph",
"hep-ph"
] | George M. Frichter, John P. Ralston and Douglas W. McKay (Department
of Physics and Astronomy, and Kansas Institute for Theoretical and
Computational Science, University of Kansas, Lawrence, KS, USA) |
astro-ph/9507076 | Detection of Weak Lensing in the Fields of Luminous Radiosources | We present a first attempt to reveal the possible existence of large
foreground mass condensations directly responsible for the gravitational
magnification of four distant luminous radiosources and one optical QSO. The
technique uses a weak lensing analysis of the distant galaxies in the field of
each source. We find a... | 1995-07-20 | 2007-05-23 | [
"astro-ph"
] | B. Fort, Y. Mellier, M. Dantel-Fort, H. Bonnet and J.-P. Kneib |
astro-ph/9507074 | Evolution of Clusters in Cold plus Hot Dark Matter Models | We use N-body simulations to study evolution of galaxy clusters over the
redshift interval 0 <= z <= 0.5 in cosmological models with a mixture of cold
and hot dark matter (CHDM). Four different techniques are utilized: the
cluster-cluster correlation function, axial ratios and quadrupoles of the dark
matter distributio... | 1995-07-19 | 2009-10-28 | [
"astro-ph"
] | Charles Walter and Anatoly Klypin (New Mexico State University) |
astro-ph/9507073 | Detectability of gravitational wave bursts from a class of neutron star
starquake GRB models | A large class of gamma-ray burst (GRB) models (overwhelming until recently)
involve the release of energy in a neutron star quake. Even though the extreme
isotropy of the GRB sky established by the BATSE experiment has now shifted the
interest to cosmological models, the former starquake scenarios are still
attractive ... | 1995-07-19 | 2009-10-28 | [
"astro-ph"
] | J.E.Horvath |
astro-ph/9507070 | Clumpy Ultracompact HII Regions I: Fully Supersonic Wind-blown Models | We propose that a significant fraction of the ultracompact HII regions found
in massive star-forming clouds are the result of the interaction of the wind
and ionizing radiation from a young massive star with the clumpy molecular
cloud gas in its neighbourhood. Distributed mass loading in the flow allows the
compact neb... | 1995-07-18 | 2015-06-24 | [
"astro-ph"
] | J.E. Dyson, R.J.R. Williams and M.P. Redman (Dept. of Physics and
Astronomy, University of Manchester) |
astro-ph/9507071 | Production of Milky Way structure by the Magellanic Clouds | Previous attempts at disturbing the galactic disk by the Magellanic Clouds
relied on direct tidal forcing. However, by allowing the halo to actively
respond rather than remain a rigid contributor to the rotation curve, the
Clouds may produce a wake in the halo which then distorts the disk. Recent work
reported here sug... | 1995-07-18 | 2009-10-28 | [
"astro-ph"
] | Martin D. Weinberg |
astro-ph/9507072 | Distribution of Gamma-Ray Bursts in Halo Neutron Star-Comet Models | The motions of comets and neutron stars have been integrated over five
billion years in the Galactic potential to determine a gamma-ray burst
distribution, presuming that bursts are the result of interactions between
these two families of objects. The comets originate in two distinct populations
- one from ejection by ... | 1995-07-18 | 2009-10-28 | [
"astro-ph"
] | M.G. Higgins and R.N. Henriksen |
astro-ph/9507069 | Limits on the Gravity Wave Background From Microlensed Quasars | The paper previously submitted under this title is incorrect in that it
drastically overestimates the cumulative deflection due to a gravitational wave
(GW) background. Avi Loeb gives a simple argument that there can be no
$(D\omega)^{1/2}$ enhancement: since the problem is linear in $h$, one can
decompose the GWs into... | 1995-07-18 | 2008-02-03 | [
"astro-ph"
] | Andrew Gould |
astro-ph/9507066 | Gamma-Ray Burst Energy Spectra: Theoretical Models, Old and New | The modelling of gamma-ray burst (GRB) spectra has considerable potential for
increasing the understanding of these enigmatic sources. A diversity of ideas
and analyses has been generated over the last two decades to explain line
features and continuum shapes, encompassing both older galactic neutron star
and ``new age... | 1995-07-17 | 2009-10-28 | [
"astro-ph"
] | M. G. Baring |
astro-ph/9507067 | The Profiles of H-Beta and [OIII] 5007 in Radio-Loud Quasars | Moderate-resolution spectra of the H$\beta$--[O III] $\lambda$5007 region
have been obtained for 41 radio-loud quasars in order to investigate
relationships among their broad- and narrow-line profiles, radio structures,
and X-ray properties. Spectra from the literature have been included to form a
data set of 60 radio-... | 1995-07-17 | 2010-11-09 | [
"astro-ph"
] | M. S. Brotherton (Astronomy Dept., University of Texas at Austin) |
astro-ph/9507068 | Likelihood Analysis of Repeating in the BATSE Catalogue | I describe a new likelihood technique, based on counts-in-cells statistics,
that I use to analyze repeating in the BATSE 1B and 2B catalogues. Using the 1B
data, I find that repeating is preferred over non-repeating by 4.3:1 odds, with
a well-defined peak at 5-6 repetitions per source. I find that the post-1B data
are ... | 1995-07-17 | 2009-10-28 | [
"astro-ph"
] | Jean M. Quashnock |
astro-ph/9507065 | The Young Globular Clusters of the Milky Way and the Local Group
Galaxies: Playing With Great Circles | The small group of Galactic Globular Clusters (GGC) (Pal 12, Terzan 7,
Ruprecht 106, Arp 2) recently discovered to be significantly younger (by ~3-4
Gyr) than the average cluster population of the Galaxy are shown to lie near
planes passing in the vicinity of some satellite galaxies of the Milky Way and
through the Gal... | 1995-07-17 | 2009-10-28 | [
"astro-ph"
] | F. Fusi Pecci, M. Bellazzini, C. Cacciari and F.R. Ferraro |
astro-ph/9507063 | Eclipsing Binaries in the Old Open Cluster NGC 2243 | We report discovery of two contact binaries and two detached eclipsing
binaries in the central part of NGC 2243. | 1995-07-16 | 2007-05-23 | [
"astro-ph"
] | Janusz Kaluzny (Warsaw University), Wojciech Krzeminski (Las Campanas
Observatory), Beata Mazur (Copernicus Astronomical Center) |
astro-ph/9507062 | Astrophysical Limits on the Evolution of Dimensionless Physical
Constants over Cosmological Time | We report new upper limits on any possible long-term time variation of the
ratio of the electron to proton masses, $(m_e/m_p)$, the fine-structure
constant, ($\alpha$), and the quantity $\alpha^2 g_p(m_e/m_p)$, where $g_p$ is
the proton gyromagnetic ratio. These limits are based on extremely high
precision observations... | 1995-07-16 | 2011-07-18 | [
"astro-ph",
"hep-ex",
"hep-ph"
] | Lennox L. Cowie and Antoinette Songaila (Univ. of Hawaii, IfA) |
astro-ph/9507064 | Cluster Ellipticals at High Redshift: The View from the Ground and with
HST | New ground-based and HST observations of distant clusters make it possible to
trace the history of E/S0 galaxies to lookback times of ~10 $h_{50}^{-1}$ Gyr.
The data strongly favor a scenario in which cluster ellipticals formed very
early with a narrow spread in ages. By z = 1.2 there are changes in color and
luminosit... | 1995-07-16 | 2007-05-23 | [
"astro-ph"
] | Mark Dickinson (STScI) |
astro-ph/9507061 | On broad iron K-alpha lines in Seyfert 1 galaxies | The X-ray spectrum obtained by Tanaka et al from a long observation of the
active galaxy MCG$-6-30-15$ shows a broad iron K$\alpha$ line skewed to low
energies. The simplest interpretation of the shape of the line is that it is
due to doppler and gravitational redshifts from the inner parts of a disk about
a massive bl... | 1995-07-15 | 2016-06-08 | [
"astro-ph"
] | A.C. Fabian, K. Nandra, C.S. Reynolds, W.N. Brandt, C. Otani, Y.
Tanaka, H. Inoue, K. Iwasawa |
astro-ph/9507055 | Faintest Galaxy Morphologies from $HST$ WFPC2 Imaging of the Hawaii
Survey Fields | We present very deep $HST$ WFPC2 images in the F814W filter of two Hawaii
Survey fields, SSA13 and SSA22. Using these data with previous ground-based
imaging and spectroscopy, we compare the colors, star-forming properties and
morphologies of the faintest galaxies with a reference sample of bright nearby
galaxies and a... | 1995-07-14 | 2009-10-28 | [
"astro-ph"
] | Lennox L. Cowie, Esther M. Hu, and Antoinette Songaila |
astro-ph/9507058 | Dwarf and Low Surface Brightness Galaxies | I review the evolutionary status of the field populations of starbursting
dwarf galaxies and low surface brightness spirals. Particular attention is paid
to the long standing problem of the progenitors for star burst galaxies, which
may be related to a population of small, low surface brightness dwarfs. Larger
low surf... | 1995-07-14 | 2007-05-23 | [
"astro-ph"
] | Stacy S. McGaugh |
astro-ph/9507056 | The composition of HB stars : RR Lyrae variables | We used moderately high-resolution, high S/N spectra to study the chemical
composition of 10 field ab-type RR Lyrae stars. A new temperature scale was
determined from literature Infrared Flux Method measures of subdwarfs and the
Kurucz (1992) model atmospheres, and used to calibrate colors for both dwarfs
and RR Lyraes... | 1995-07-14 | 2009-11-24 | [
"astro-ph"
] | G.Clementini, E.Carretta, R.Gratton, R.Merighi, J.R.Mould,
J.K.McCarthy |
astro-ph/9507059 | Photon Splitting in Soft Gamma Repeaters | The exotic quantum process of photon splitting has great potential to explain
the softness of emission in soft gamma repeaters (SGRs) if they originate in
neutron stars with surface fields above the quantum critical field $B_{\rm
cr}=4.413\times 10^{13}$Gauss. Splitting becomes prolific at such field
strengths: its pri... | 1995-07-14 | 2009-10-28 | [
"astro-ph"
] | M. G. Baring and A. K. Harding |
astro-ph/9507057 | The Stability of Primordial Magnetic Fields Produced by Phase
Transitions | Primordial magnetic fields seem to be a generic relic of phase transitions in
the early universe. We consider a primordial electromagnetic field formed as a
result of a second-order phase transition, and show that it is stable to
thermal fluctuations in the period immediately following. We also show how such
a field ar... | 1995-07-14 | 2016-08-30 | [
"astro-ph",
"hep-ph"
] | A.P.Martin and A.C.Davis |
astro-ph/9507060 | CMB Anisotropies in the Weak Coupling Limit | We present a new, more powerful and accurate, analytic treatment of cosmic
microwave background (CMB) anisotropies in the weakly coupled regime. Three
applications are presented: gravitational redshifts in a time dependent
potential, the Doppler effect in reionized scenarios, and the Vishniac effect.
The Vishniac effec... | 1995-07-14 | 2008-11-26 | [
"astro-ph"
] | Wayne Hu and Martin White |
astro-ph/9507050 | The Power Spectrum of IRAS Galaxies | We estimate the three-dimensional power spectrum of IRAS galaxies from the
QDOT and $1.2$Jy redshift surveys. We use identical estimators for both surveys
and show how the results depend on the weights assigned to the galaxies. The
power spectrum for the QDOT survey is steeper and has a higher amplitude at
wavenumbers ... | 1995-07-13 | 2016-06-08 | [
"astro-ph"
] | Helen Tadros and George Efstathiou |
astro-ph/9507052 | A Search for $\gamma$ Doradus-Type Variable Stars in the Hyades | $\gamma$ Doradus stars are photometrically variable early F-type stars on or
just above the main sequence in the Hertzsprung-Russell Diagram. They vary by
as much as 0.1 mag on time scales an order of magnitude slower than the
fundamental radial pulsation period. These brightness variations are presumably
due to non-ra... | 1995-07-13 | 2015-06-24 | [
"astro-ph"
] | Kevin Krisciunas, Richard A. Crowe, Kenneth D. Luedeke, and Mavourneen
Roberts |
astro-ph/9507046 | Match Probability Statistics and Gamma Ray Burst Recurrences in the
BATSE Catalog | We develop match probability statistics to test the recurrences of gamma ray
bursts in the BATSE catalog 1B and 2B. We do not find a signal of repetitions
at the match level of 1.e-3. | 1995-07-13 | 2009-10-28 | [
"astro-ph"
] | Sun Hong Rhie and David Bennett |
astro-ph/9507047 | The Distribution of Column Densities and b Values in the Lyman-Alpha
Forest | We describe the properties of the Ly$\alpha$ forest in the column density
range $\nhi \geq 2\times10^{12}$ cm$^{-2}$ based on 1056 lines in the
wavelength range 4300--5100\AA measured in extremely high S/N, $R=36,000$
spectra of four quasars. The column density distribution is well described by a
-1.5 power law to $2\t... | 1995-07-13 | 2009-10-28 | [
"astro-ph"
] | Esther M. Hu, Tae-Sun Kim, Lennox L. Cowie, Antoinette Songaila, and
Michael Rauch |
astro-ph/9507054 | Rethinking the Model of Moving Cosmic Strings Producing Anisotropy in
the Microwave Background | We re-analyze the issue of redshifts induced by a moving cosmic string by
looking at moving sources and observers on a conical spacetime in a fully
relativistic approach. By replacing the concept of a moving spacetime with the
more clearly defined concept of moving sources and observers in the string
spacetime, we show... | 1995-07-13 | 2007-05-23 | [
"astro-ph"
] | Francine R. Marleau, Charles C. Dyer, and Jody H. Palmer (Department
of Astronomy, University of Toronto, Canada) |
astro-ph/9507049 | Perturbation growth and cosmic microwave background anisotropies in the
string-like matter dominated universe | It is well known that the $\Lambda$-term is a very good candidate for the
smooth component of the universe since it resolves the so-called
``$\Omega$-problem'' giving, at the same time, sufficiently large age of the
universe. However, the constant $\Lambda$-term is not the only possibility.
Some people consider the $\L... | 1995-07-13 | 2009-10-28 | [
"astro-ph"
] | Jerzy Stelmach |
astro-ph/9507048 | Frame-Independent Calculation of Spectral Indices from Inflation | Spectral indices from models of inflation which incorporate a Generalized
Einstein Theory (GET) gravity sector are calculated to first order in a
slow-roll expansion. By quantizing a suitably- generalized measure of the
intrinsic curvature perturbation, the spectral indices as calculated in the
Jordan frame now match t... | 1995-07-13 | 2007-05-23 | [
"astro-ph",
"gr-qc"
] | David Kaiser |
astro-ph/9507051 | Experimental limits to the density of dark matter in the solar system | On the scales of galaxies and beyond there is evidence for unseen dark
matter. In this paper we find the experimental limits to the density of dark
matter bound in the solar system by studying its effect upon planetary motion. | 1995-07-13 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | {\O}yvind Gr{\o}n and Harald H. Soleng |
astro-ph/9507053 | Cosmological Brightness Distribution Fits of Gamma Ray Burst Sources | We discuss detailed fits of the BATSE and PVO gamma-ray burst peak-flux
distributions with Friedman models taking into account possible density
evolution and standard candle or power law luminosity functions. A chi-square
analysis is used to estimate the goodness of the fits and we derive the
significance level of limi... | 1995-07-13 | 2009-10-28 | [
"astro-ph"
] | I. Horvath, P. Meszaros and A. Meszaros |
astro-ph/9507041 | SPH Simulations of Accretion Disks and Narrow Rings | We model a massless viscous disk using Smoothed Particle Hydrodynamics (SPH)
and note that it evolves according to the Lynden-Bell \& Pringle theory (1974)
until a non-axisymmetric instability develops at the inner edge of the disk.
This instability may have the same origin as the instability of initially
axisymmetric ... | 1995-07-12 | 2021-10-13 | [
"astro-ph"
] | Sarah T. Maddison, James R. Murray, Joe J. Monaghan |
astro-ph/9507043 | Causality and the Power Spectrum | We find constraints on the generation of super-causal-horizon energy
perturbations from a smooth initial state, under a simple physical scheme. We
quantify these constraints by placing the upper limit $\lambda_c = 3.0 d_H$ on
the wavelength at which the power spectrum turns over to $k^4$ behavior. This
means that sub-h... | 1995-07-12 | 2009-10-28 | [
"astro-ph"
] | James Robinson(Imperial),Benjamin D. Wandelt(Imperial) |
astro-ph/9507040 | Fokker-Planck Models of Star Clusters with Anisotropic Velocity
Distributions. I. Pre-Collapse Evolution | The evolution of a spherical single-mass star cluster is followed in detail
up to core collapse by numerically solving the orbit-averaged two-dimensional
Fokker-Planck equation in energy-angular momentum space. Velocity anisotropy is
allowed in the two-dimensional Fokker-Planck model. Using improved numerical
codes, th... | 1995-07-12 | 2007-05-23 | [
"astro-ph"
] | Koji Takahashi |
astro-ph/9507044 | Spectral Classification of Galaxies Along the Hubble Sequence | We develop a straightforward and quantitative two-step method for
spectroscopically classifying galaxies from the low signal-to-noise (S/N)
optical spectra typical of galaxy redshift surveys. First, using \chi^2-fitting
of characteristic templates to the object spectrum, we determine the relative
contributions of the o... | 1995-07-12 | 2009-10-28 | [
"astro-ph"
] | Dennis Zaritsky (UCO/Lick Obs.), Ann I. Zabludoff (Carnegie Obs.), and
Jeffrey A. Willick (Carnegie Obs.) |
astro-ph/9507042 | Spectroscopic Gradients in Elliptical Galaxies | Preliminary results based on a large compilation of line-strength profiles
are presented and discussed. Elliptical galaxies (Es) with strong central
Mg$_2$ show steeper line-strength gradients. These galaxies are more massive
and have higher velocity dispersions, note nevertheless, that the Mg$_2$
gradient correlates b... | 1995-07-12 | 2007-05-23 | [
"astro-ph"
] | J. Jesus Gonzalez and Javier Gorgas |
astro-ph/9507045 | Field Ordering and Energy Density in Texture Cosmology | We use numerical simulations of the time evolution of global textures to
investigate the relationship between ordering dynamics and energy density in an
expanding universe. Events in which individual textures become fully wound are
rare. The energy density is dominated by the more numerous partially wound
configuration... | 1995-07-12 | 2009-10-28 | [
"astro-ph"
] | Nicholas G. Phillips and A. Kogut |
astro-ph/9507038 | Kurtosis in Large-Scale Structure as a Constraint on Non-Gaussian
Initial Conditions | We calculate the kurtosis of a large-scale density field which has undergone
weakly non-linear gravitational evolution from arbitrary non-Gaussian initial
conditions. It is well known that the weakly evolved {\twelveit skewness} is
equal to its initial value plus the term induced by gravity, which scales with
the rms d... | 1995-07-11 | 2015-06-24 | [
"astro-ph"
] | Micha{\l} J. Chodorowski, and Fran\c{c}ois R. Bouchet |
astro-ph/9507036 | Large-scale structure formation for power spectra with broken scale
invariance | We have simulated the formation of large-scale structure arising from
COBE-normalized spectra computed by convolving a primordial double-inflation
perturbation spectrum with the CDM transfer function. Due to the broken scale
invariance ('BSI') characterizing the primordial perturbation spectrum, this
model has less sma... | 1995-07-11 | 2015-06-24 | [
"astro-ph"
] | R. Kates, V. M\"uller, S. Gottl\"ober, J. P. M\"ucket, J. Retzlaff |
astro-ph/9507034 | On the Origin of Very Wide Ly$\alpha$-Absorption-Lines in Quasar Spectra | We present a new explanation for the very wide absorption features in quasar
spectra. In our model, a very wide absorption feature will originate, when the
line of sight crosses a bubble wall tangentially. We demonstrate this on the
quasar pair (2138-4427), (2139-4434). Both show two very wide absorption lines
in their... | 1995-07-11 | 2008-02-03 | [
"astro-ph"
] | Wolfgang Priester, Carsten van de Bruck |
astro-ph/9507037 | The Topology of RR Lyrae Instability Strip and the Oosterhoff Dichotomy | Convective pulsating models with Y=0.24, stellar mass M=0.65Mo, 0.75Mo, under
selected assumptions about luminosities and effective temperatures, are used
together with stellar atmosphere computations to get the predicted dependence
of RR Lyrae instability strip on stellar mass in the observative plane MV, B-V.
The com... | 1995-07-11 | 2009-10-28 | [
"astro-ph"
] | G. Bono, F. Caputo, M. Marconi |
astro-ph/9507039 | Deep Optical Observations of Compact Groups of Galaxies | Compact groups of galaxies appear to be extremely dense, making them likely
sites of intense galaxy interaction, while their small populations make them
relatively simple to analyze. In order to search for optical interaction
tracers such as diffuse light and galaxy tidal features in Hickson compact
groups (HCGs), we c... | 1995-07-11 | 2009-10-28 | [
"astro-ph"
] | Rachel A. Pildis, Joel N. Bregman, and James M. Schombert |
astro-ph/9507035 | Doppler Peaks in the Angular Power Spectrum of the Cosmic Microwave
Background: A Fingerprint of Topological Defects | The Doppler peaks (Sacharov peaks) in the angular power spectrum of the
cosmic microwave background anisotropies, are mainly due to coherent
oscillations in the baryon radiation plasma before recombination. Here we
present a calculation of the Doppler peaks for perturbations induced by global
textures and cold dark mat... | 1995-07-11 | 2009-10-28 | [
"astro-ph",
"gr-qc",
"hep-ph",
"hep-th"
] | Ruth Durrer, Alejandro Gangui and Mairi Sakellariadou |
astro-ph/9507033 | Lyman Alpha Forest Clustering Using Cell Counts Statistics | We present a novel technique for calculating \Lya forest correlations based
on cell counts. It is applied to the line lists from 7 QSOs observed at high
resolution ($\Delta v<25\kms$). Two spectra (Q0055$-$259 and Q0014$+$813)
appear to be sufficiently free of biases to obtain meaningful estimates. We
find for both pos... | 1995-07-10 | 2007-05-23 | [
"astro-ph"
] | Fran\c{c}ois R. Bouchet, and Avery Meiksin |
astro-ph/9507032 | The COBRAS/SAMBA CMB Project | COBRAS/SAMBA is a second generation satelitte dedicated to mapping at high
resolution and sensitivity the anisotropies of the Cosmic Microwave Background
(CMB). This mission is in the assessment study phase (A) at ESA, with a
decision expected mid 1996, for a launch around 2003. | 1995-07-10 | 2007-05-23 | [
"astro-ph"
] | Fran\c{c}ois R. Bouchet, Richard Gispert, Jean-Lou Puget |
astro-ph/9507031 | Velocity Dispersions and X-Ray Temperatures of Galaxy Clusters | Using a large and well-controlled sample of clusters of galaxies, we
investigate the relation between cluster velocity dispersions and X-ray
temperatures of intra-cluster gas. In order to obtain a reliable estimate of
the total velocity dispersion of a cluster, independent of the level of
anisotropies in galaxy orbits,... | 1995-07-10 | 2009-10-28 | [
"astro-ph"
] | M. Girardi, D. Fadda, G. Giuricin, F. Mardirossian, M. Mezzetti, and
A. Biviano |
astro-ph/9507030 | Gravitational Radiation and Very Long Baseline Interferometry | Gravitational waves affect the observed direction of light from distant
sources. At telescopes, this change in direction appears as periodic variations
in the apparent positions of these sources on the sky; that is, as proper
motion. A wave of a given phase, traveling in a given direction, produces a
characteristic pat... | 1995-07-10 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | Ted Pyne, Carl R. Gwinn, Mark Birkinshaw, T. Marshall Eubanks, and
Demetrios N. Matsakis |
astro-ph/9507026 | The Binary Zoo: The Calculation of Production Rates of Binaries Through
2+1 Encounters in Globular Clusters | In studying encounters between binaries and single stars, one is interested
in three classes of events: exchanges of stars, hardening of the original
binary by a third star, and the production of merged objects. We present a
means for computing cross sections for these three outcomes for an arbitrary
binary and single ... | 1995-07-07 | 2015-06-24 | [
"astro-ph"
] | M.B. Davies |
astro-ph/9507028 | THE CANADA-FRANCE REDSHIFT SURVEY IX: HST Imaging of High-Redshift Field
Galaxies | HST B and I images are presented of 32 CFRS galaxies with secure redshifts in
the range 0.5 < z < 1.2. These galaxies exhibit the same range of morphological
types as seen locally, i.e., ellipticals, spirals and irregulars. The galaxies
look far less regular in the $B$ images (rest-frame ultraviolet) than at longer
wav... | 1995-07-07 | 2009-10-28 | [
"astro-ph"
] | D.J. Schade, S.J. Lilly, David Crampton, F. Hammer, O. Le Fevre, L.
Tresse |
astro-ph/9507023 | Nucleon Spin Fluctuations and the Supernova Emission of Neutrinos and
Axions | In the hot and dense medium of a supernova (SN) core, the nucleon spins
fluctuate so fast that the axial-vector neutrino opacity and the axion
emissivity are expected to be significantly modified. Axions with
$m_a\alt10^{-2}\,{\rm eV}$ are not excluded by SN~1987A. A substantial transfer
of energy in neutrino-nucleon (... | 1995-07-07 | 2008-11-26 | [
"astro-ph",
"hep-ph",
"nucl-th"
] | H.-T.Janka (Univ. of Chicago), W.Keil (MPI f. Astrophysik), G.Raffelt
(MPI f. Physik), D.Seckel (Bartol) |
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