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 |
|---|---|---|---|---|---|---|
alg-geom/9501001 | Cohomology of compact hyperkaehler manifolds | Let M be a compact simply connected hyperk\"ahler (or holomorphically
symplectic) manifold, \dim H^2(M)=n. Assume that M is not a product of
hyperkaehler manifolds. We prove that the Lie algebra so(n-3,3) acts by
automorphisms on the cohomology ring H^*(M). Under this action, the space
H^2(M) is isomorphic to the funda... | 1995-01-03 | 2008-02-03 | [
"alg-geom",
"dg-ga",
"math.AG",
"math.DG"
] | Misha Verbitsky |
ao-sci/9510001 | A Stochastic Diffusion Model of Climate Change | We present a model for variations in atmospheric temperature from time scales
of one day to one million years based on a stochastic diffusion (random walk)
model of the turbulent transport of heat energy vertically in a coupled
atmosphere-ocean model. The predictions of the model are supported by station
records and pa... | 1995-10-05 | 2008-02-03 | [
"ao-sci",
"cond-mat",
"physics.ao-ph"
] | Jon D. Pelletier (Geological Sciences, Cornell U.) |
ao-sci/9509001 | Hadley circulations and large scale motions of moist convection in the
two dimensional numerical model | As a tool for understanding the meridional circulation of the atmosphere, a
two-dimensional ( latitude -- height ) numerical model is used to clarify the
relationship between the Hadley circulation and large-scale motions associated
with moist convection. The model is based on the primitive equations including
the mois... | 1995-09-07 | 2016-08-30 | [
"ao-sci",
"physics.ao-ph"
] | Masaki Satoh (Saitama Inst. Tech., Japan) |
ao-sci/9508001 | Mechanisms of Seasonal - ENSO interaction | The mechanisms of interaction between the seasonal cycle and ENSO are
investigated using the Zebiak and Cane ENSO prediction model. The most dominant
seasonal effect is found to be due to the wind divergence field, as determined
by the seasonal motion of the ITCZ, through its effect on the atmospheric
heating. The next... | 1995-08-10 | 2008-02-03 | [
"ao-sci",
"physics.ao-ph"
] | Eli Tziperman, Steve Zebiak, Mark Cane |
ao-sci/9505001 | Interpretation of TOVS Water Vapor Radiances Using a Random Strong Line
Model | This study illustrates the application of a random strong line (RSL) model of
radiative transfer to the interpretation of satellite observations of the
upwelling radiation in the 6.3 micron water vapor absorption band. The model,
based upon an assemblage of randomly overlapped, strongly absorbing, pressure
broadened li... | 1995-05-03 | 2008-02-03 | [
"ao-sci",
"physics.ao-ph"
] | Brian J. Soden, Francis P. Bretherton |
ao-sci/9504001 | The stability of a zonally averaged thermohaline circulation model | A combination of analytical and numerical techniques are used to efficiently
determine the qualitative and quantitative behaviour of a one-basin zonally
averaged thermohaline circulation ocean model. In contrast to earlier studies
which use time stepping to find the steady solutions, the steady state
equations are firs... | 1995-04-28 | 2018-07-25 | [
"ao-sci",
"physics.ao-ph"
] | G.A. Schmidt and L.A. Mysak (Centre for Climate and Global Change
Research, McGill University) |
ao-sci/9503001 | A Scaling Theory for Horizontally Homogeneous, Baroclinically Unstable
Flow on a Beta-Plane | The scaling argument developed by Larichev and Held (1995) for eddy
amplitudes and fluxes in a horizontally homogeneous, two-layer model on an
f-plane is extended to a beta-plane. In terms of the non-dimensional number x =
U/(beta*lambda^2), where lambda is the deformation radius and U is the mean
thermal wind, the res... | 1995-03-13 | 2016-08-30 | [
"ao-sci",
"physics.ao-ph"
] | Isaac M. Held and Vitaly D. Larichev |
ao-sci/9502002 | A linear thermohaline oscillator driven by stochastic atmospheric
forcing | The interdecadal variability of a stochastically forced four-box model of the
oceanic meridional thermohaline circulation (THC) is described and compared to
the THC variability in the coupled ocean-atmosphere GCM of Delworth, Manabe,
and Stouffer (1993). The box model is placed in a linearly stable thermally
dominant m... | 1995-02-09 | 2016-08-30 | [
"ao-sci",
"physics.ao-ph"
] | Stephen M. Griffies and Eli Tziperman |
ao-sci/9502001 | North Atlantic thermohaline circulation predictability in a coupled
ocean-atmosphere model | Predictability of the North Atlantic thermohaline circulation (THC)
variability as simulated in the GFDL coupled ocean-atmosphere general
circulation model is established for a set of ensemble experiments. The
ensembles consist of identical oceanic initial conditions underneath a model
atmosphere chosen randomly from t... | 1995-02-08 | 2016-08-30 | [
"ao-sci",
"physics.ao-ph"
] | Stephen M. Griffies and Kirk Bryan |
astro-ph/9512170 | Small Radius Perturbation of the Selfgravitating Gas with Cylindrical
Symmetry | Self-consistent mouvement of initial perturbation in density, velocity and
gravitation potentail on the background of the stationary cylindrical
configuration of the gas with gravitation and pressure in Lagrange variables
have been studied. The nonlinear partial differential equation for description
radius motion has b... | 1995-12-30 | 2007-05-23 | [
"astro-ph"
] | Alexander Gromov (Department of Computer Science, Faculty of Technical
Cybernetics, St. Petersburg State Technical University, Russia) |
astro-ph/9512171 | Binary Evolution of Type Ia Supernovae | Observations of Type Ia supernovae (SN~Ia) combined with modeling of
dynamics, light curves and spectra continue to point to the difficult
conclusion that SN~Ia result from degenerate ignition in a carbon/oxygen white
dwarf of the Chandrasekhar mass. Such a model accounts well for the ``normal"
SN~Ia and for the observ... | 1995-12-30 | 2007-05-23 | [
"astro-ph"
] | J. Craig Wheeler |
astro-ph/9512166 | Big Bang Nucleosynthesis and the Consistency Between Theory and the
Observations of D, \he3, \he4, and \li7 | The current status of big bang nucleosynthesis is reviewed. Particular
attention is given to the degree at which the theory is consistent with the
observation of the light element abundances. | 1995-12-29 | 2007-05-23 | [
"astro-ph",
"hep-ph"
] | Keith A. Olive |
astro-ph/9512169 | Large-Scale Outflows in Edge-on Seyfert Galaxies. I. Optical Emission-
Line Imaging and Optical Spectroscopy | We have launched a search for large-scale ($\gapprox$1 kpc) minor-axis
outflows in edge-on Seyfert galaxies in order to assess their frequency of
occurrence and study their properties. Here we present optical continuum and
\han2 line images and/or minor-axis long-slit spectra of 22 edge-on Seyfert
galaxies. Six of thes... | 1995-12-29 | 2009-10-28 | [
"astro-ph"
] | Edward J. M. Colbert (STScI,UMD), S. A. Baum (STScI), J. F. Gallimore,
C. P. O'Dea, M. D. Lehnert, Z. I. Tsvetanov, J. S. Mulchaey, S. Caganoff |
astro-ph/9512167 | A Butterfly in the Making: Revealing the Near- Infrared Structure of
Hubble 12 | We present deep narrowband near-IR images and moderate resolution spectra of
the young planetary nebula Hubble 12. These data are the first to show clearly
the complex structure for this important planetary nebula. Images were obtained
at lambda = 2.12, 2.16, and 2.26 micron. The lambda = 2.12 micron image reveals
the ... | 1995-12-29 | 2009-10-28 | [
"astro-ph"
] | Joseph L. Hora (Institute for Astronomy, University of Hawaii) and
William B. Latter (NASA/Ames Research Center) |
astro-ph/9512168 | Tentative Appraisal of Compatibility of Small-Scale CMB Anisotropy
Detections in the Context of COBE-DMR-Normalized Open and Flat $\Lambda$ CDM
Cosmogonies | Goodness-of-fit statistics are used to quantitatively establish the
compatibility of CMB anisotropy predictions in a wide range of DMR-normalized,
open and spatially-flat $\Lambda$, CDM cosmogonies with the set of all
presently available small-scale CMB anisotropy detection data. Conclusions
regarding model viability d... | 1995-12-29 | 2009-10-28 | [
"astro-ph"
] | Ken Ganga, Bharat Ratra and Naoshi Sugiyama |
astro-ph/9512165 | Detection of a Lyman-alpha Emission-Line Companion to the z=4.69 QSO
BR1202-0725 | We report the detection of a nearby emission-line companion to the z=4.695
quasar BR1202-0725. Deep narrow-band exposures on this field from the UH 2.2 m
show a Ly alpha flux of 1.5\times\ten{-16} ergs cm^{-2} s^{-1}. High-resolution
HST WFC2 imaging in the F814W filter band shows continuum structure near the
emission ... | 1995-12-29 | 2009-10-28 | [
"astro-ph"
] | Esther M. Hu (Univ. of Hawaii, IfA), Richard G. McMahon (Institute of
Astronomy, Cambridge), and Eiichi Egami (Univ. of Hawaii, IfA) |
astro-ph/9512162 | High-Velocity Molecular Gas in the Galactic Center Radio Lobe | We point out a possible association of high-velocity molecular gas with the
Galactic Center Radio Lobe (GCL). A molecular spur in the eastern GCL ridge is
receding at $\Vlsr \sim +100$ \kms, and the western spur approaching at $\Vlsr
\sim -150$ \kms, suggesting a high-velocity rotation of the GCL. We study the
kinemati... | 1995-12-28 | 2009-10-28 | [
"astro-ph"
] | Yoshiaki Sofue |
astro-ph/9512163 | Retention Fractions for Globular Cluster Neutron Stars | Fokker-Planck models are used to give estimates for the retention fractions
for newly-born neutron stars in globular clusters as a function of kick
velocity. These can be used to calculate the present day numbers of neutron
stars in globular clusters and in addressing questions such as the origin of
millisecond pulsars... | 1995-12-28 | 2015-06-24 | [
"astro-ph"
] | G. A. Drukier |
astro-ph/9512164 | Cosmological Evolution and Luminosity Function Effects on Number Counts,
Redshift and Time Dilation of Bursting Sources | We present analytic formulae for the integral number count distribution of
cosmological bursting or steady sources valid over the entire range of fluxes,
including density evolution and either standard candle or a power law
luminosity function. These are used to derive analytic formulae for the mean
redshift, the time ... | 1995-12-28 | 2009-10-28 | [
"astro-ph"
] | A. Meszaros and P. Meszaros |
astro-ph/9512161 | CMB Anisotropies and Theories of the Early Universe | I present recent work aimed at showing how currently competing theories of
the early universe leave their imprint on the temperature anisotropies of the
CMB radiation. We consider the 3-point correlation function, as well as the
inherent theoretical uncertainties associated with it, for which we derive
explicit analyti... | 1995-12-26 | 2007-05-23 | [
"astro-ph"
] | Alejandro Gangui |
astro-ph/9512160 | The Long and the Short of Gamma-Ray Bursts | We report evidence from the 3B Catalogue that long ($T_{90} > 10$ s) and
short ($T_{90} < 10$ s) gamma-ray bursts represent distinct source populations.
Their spatial distributions are significantly different, with long bursts
having $\langle V/V_{max} \rangle = 0.282 \pm 0.014$ but short bursts having
$\langle V/V_{ma... | 1995-12-25 | 2009-10-28 | [
"astro-ph"
] | J. I. Katz and L. M. Canel |
astro-ph/9512157 | CMB Anisotropy in COBE-DMR-Normalized Flat $\Lambda$ CDM Cosmogony | We compute the cosmic microwave background (CMB) anisotropy in a low-density,
flat, cosmological constant, cold dark matter model which is normalized to the
two-year COBE DMR sky map. Although conclusions regarding model viability must
remain tentative until systematic effects are better understood, there are mild
indi... | 1995-12-23 | 2015-06-24 | [
"astro-ph"
] | Bharat Ratra and Naoshi Sugiyama |
astro-ph/9512159 | The Variability of Quasars. II. Frequency Dependence | The variability of 30 PG quasars has been observed in the red band during
three years. A rest-frame structure function analysis shows an increase of
variability with the time interval up to 0.2 mag r.m.s. after two years. A
comparison with the IUE data available for PG quasars shows that the
variability increases with ... | 1995-12-23 | 2009-10-28 | [
"astro-ph"
] | A. Di Clemente, E. Giallongo, G. Natali, D. Trevese, and F. Vagnetti |
astro-ph/9512158 | The Information Content of Redshift and Velocity Surveys | The pixon-based image reconstruction of Puetter and Pi\~na has achieved
significant improvements over other methods in higher spatial resolution,
greater sensitivity to faint sources, and immunity to the production of
spurious artifacts and signal-correlated residuals. The same technique may be
used for those problems ... | 1995-12-23 | 2007-05-23 | [
"astro-ph"
] | A. Yahil (SUNY, Stony Brook) |
astro-ph/9512156 | A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble
Constant | We present a simple mass model for the lensing galaxy in the gravitationally
lensed quasar 0957+561. The model is a generalization of the singular
isothermal sphere and includes a core radius, $r_c$, and a power-law index,
$\eta$, defined such that mass increases as $r^\eta$ at large radius. We
approximate the galaxy c... | 1995-12-23 | 2009-10-28 | [
"astro-ph"
] | Norman A. Grogin and Ramesh Narayan (Harvard Univ.) |
astro-ph/9512154 | Infrared Imaging of Late-Type Stars | Infrared imaging properties of dusty winds around late-type stars are
investigated in detail, employing a self-consistent model that couples the
equations of motion and radiative transfer. Because of general scaling
properties, the angular profiles of surface brightness are self-similar. In any
given star, the profile ... | 1995-12-22 | 2015-06-24 | [
"astro-ph"
] | Zeljko Ivezic and Moshe Elitzur (University of Kentucky) |
astro-ph/9512152 | Dust Emission from IRC+10216 | Infrared emission from the dust shell around IRC+10216 is analysed in detail,
employing a self-consistent model for radiatively driven winds around late-type
stars that couples the equations of motion and radiative transfer in the dust.
The resulting model provides agreement with the wealth of available data,
including... | 1995-12-22 | 2015-06-24 | [
"astro-ph"
] | Zeljko Ivezic and Moshe Elitzur (University of Kentucky) |
astro-ph/9512148 | CMB Anisotropy in COBE-DMR-Normalized Open CDM Cosmogony | We compute the CMB anisotropy in an open inflation CDM model which is
normalized to the two-year DMR sky map. Presently available CMB data is
consistent with $\Omega_0 \sim 0.3 - 0.4$, but does not strongly disfavour
either $\Omega_0 \sim 0.1$ or $\Omega_0 \sim 1$. Accumulating CMB data should
strengthen the observatio... | 1995-12-22 | 2009-10-28 | [
"astro-ph"
] | Bharat Ratra, Anthony J. Banday, Krzysztof M. Gorski and Naoshi
Sugiyama |
astro-ph/9512151 | COBE Data Spatial--Frequency Analysis and CMB Anisotropy Spectrum | We discuss the problem of CMB spectrum corruption during Galactic emission
removing. A new technique of spatial--frequency data reduction is proposed. The
technique gives us a possibility to avoid a spatial harmonics nonorthogonality.
The proposed technique is applied to the two-year COBE DMR sky maps. We exclude
the h... | 1995-12-22 | 2007-05-23 | [
"astro-ph"
] | A. A. Brukhanov, D. P. Skulachev, I. A. Strukov, T. V. Konkina (Space
Research Institute, Moscow, Russia) |
astro-ph/9512155 | Dependence of Inflationary Reconstruction upon Cosmological Parameters | The inflationary potential and its derivatives determine the spectrum of
scalar and tensor metric perturbations that arise from quantum fluctuations
during inflation. The CBR anisotropy offers a promising means of determining
the spectra of metric perturbations and thereby a means of constraining the
inflationary poten... | 1995-12-22 | 2009-08-18 | [
"astro-ph"
] | Michael Turner and Martin White |
astro-ph/9512149 | Gamma Rays from Compact Objects | A review on some recent developments in gamma ray astrophysics with
particular emphasis on the role of relativistic bulk motion in nonthermal gamma
ray sources, radiation processes in AGN jets, high-energy neutrino astronomy
and the use of gamma rays in the energy range 10 GeV - 50 TeV as a probe of the
diffuse IR-UV r... | 1995-12-22 | 2007-05-23 | [
"astro-ph"
] | Karl Mannheim |
astro-ph/9512153 | Combined stellar structure and atmosphere models for massive stars:
Revised ionising fluxes for O stars | We present the EUV fluxes derived from the recent "combined stellar structure
and atmosphere models" (CoStar models). The atmosphere models in particular
account for the stellar wind and include non-LTE effects and line blanketing.
We provide an extensive set of calculations from tracks between 20 and 120 Msun
at Z=0.0... | 1995-12-22 | 2007-05-23 | [
"astro-ph"
] | D. Schaerer (Geneva Observatory) |
astro-ph/9512147 | Destruction of 3He in Low Mass Stars and Implications for Chemical
Evolution | Recent observations of 3He/H in different environments tend to prove that 3He
is not produced in low mass stars, contrary to the standard predictions of
stellar evolution theory. We show how a simple consistent mechanism, namely
rotation-induced mixing, can lead to the destruction of 3He in low mass stars
and simultane... | 1995-12-22 | 2007-05-23 | [
"astro-ph"
] | C. Charbonnel (Laboratoire d'Astrophysique de Toulouse) |
astro-ph/9512150 | Was the propeller mechanism active during the periastron passage of PSR
1259--63? | Timing analisys of PSR 1259-63 during its recent periastron passage suggested
that the pulsar was spinning-down due to the propeller mechanism (Manchester et
al. 1995). This requires that the radio pulsar mechanism is temporarily
quenched. On the basis of the Be equatorial disk model derived from the
dispersion and rot... | 1995-12-22 | 2007-05-23 | [
"astro-ph"
] | S. Campana (Oss. astr. Brera), M. Colpi (Univ. Milano), S. Mereghetti
(IFCTR-CNR Milano) & L. Stella (Oss. astr. Brera) |
astro-ph/9512144 | Can neutrinos from neutron star mergers power gamma-ray bursts? | We perform three-dimensional hydrodynamical simulations of the coalescence of
binary neutron stars. We include the emission and backreaction of gravitational
waves into the Newtonian ``Piecewise Parabolic Method''. The use of the
physical equation of state of Lattimer & Swesty (1991) allows us to take into
account the ... | 1995-12-21 | 2011-05-23 | [
"astro-ph"
] | H.-Th. Janka and M. Ruffert (Max-Planck-Institut fuer Astrophysik) |
astro-ph/9512143 | On the nature of the blue giants in NGC 330 | The young SMC cluster NGC 330 contains a number of blue stars that lie above
the main-sequence turnoff found from our isochrone fitting and below the
position of the blue supergiants. We used our own, new spectroscopy and
published data on these stars to investigate their possible nature. Problems in
interpreting the e... | 1995-12-21 | 2007-05-23 | [
"astro-ph"
] | Eva K. Grebel, Wm James Roberts, Wolfgang Brandner |
astro-ph/9512145 | Stability of a relativistic rotating electron-positron jet:
nonaxisymmetric perturbations | We investigate the linear stability of a hydrodynamic relativistic flow of
magnetized plasma in the force--free approximation. We considered the case of
light cylindrical jet in cold and dense environment, so the jet boundary
remains at rest. Continuous and discrete spectra of frequencies are
investigated analytically.... | 1995-12-21 | 2015-06-24 | [
"astro-ph"
] | Ya.N.Istomin, V.I.Pariev (Lebedev Physical Institute, Moscow) |
astro-ph/9512142 | Implications of the Background Radiation for Cosmic Structure Formation | The CMB is a remarkably distortionless blackbody, and this strongly
constrains the amount of energy that can have been injected at high redshift,
thereby limiting the role that hydrodynamical amplification can have played in
cosmic structure formation. The current data on primary anisotropies (those
calculated using li... | 1995-12-21 | 2009-09-25 | [
"astro-ph"
] | J. Richard Bond (CITA) |
astro-ph/9512141 | How Filaments are Woven into the Cosmic Web | Observations indicate galaxies are distributed in a filament-dominated
web-like structure. Numerical experiments at high and low redshift of viable
structure formation theories also show filament-dominance. We present a simple
quantitative explanation of why this is so, showing that the final-state web is
actually pres... | 1995-12-21 | 2009-10-28 | [
"astro-ph"
] | J. Richard Bond, Lev Kofman and Dmitri Pogosyan |
astro-ph/9512146 | The MACHO Project: 45 Candidate Microlensing Events from the First Year
Galactic Bulge Data | We report the detection of 45 candidate microlensing events in fields toward
the Galactic bulge. These come from the analysis of 24 fields containing 12.6
million stars observed for 190 days in 1993. Many of these events are of
extremely high signal to noise and are remarkable examples of gravitational
microlensing. Th... | 1995-12-21 | 2009-10-28 | [
"astro-ph"
] | C. Alcock, R.A. Allsman, T.S. Axelrod, D.P. Bennett, K.H. Cook, K.C.
Freeman, K. Griest, J. Guern, M.J. Lehner, S.L. Marshall, H.-S. Park, S.
Perlmutter, B.A. Peterson, M.R. Pratt, P.J. Quinn, A.W. Rodgers, C.W. Stubbs,
and W. Sutherland (The MACHO Collaboration) |
astro-ph/9512134 | Cold Gas at High Redshift | We discuss the current observational and theoretical issues concerning cold
gas at high redshift and present simulations showing how a number of
observational issues can be resolved with planned future instrumentation. | 1995-12-20 | 2016-01-27 | [
"astro-ph"
] | Colin A. Norman (JHU and STScI), Robert Braun (NFRA) |
astro-ph/9512135 | Radio observations of the $\gamma$-ray blazar 0528+134 | We report multifrequency observations of the $\gamma$-ray blazar 0528+134
with the Effelsberg 100-m telescope, the IRAM 30-m telescope, and the NRL Green
Bank Interferometer. 0528+134 underwent a major radio and mm outburst in 1993 a
few month after a very strong outburst in high energy $\gamma$-rays. A similar
behavio... | 1995-12-20 | 2007-05-23 | [
"astro-ph"
] | M. Pohl, W. Reich, T.P. Krichbaum, K. Standke, S. Britzen, H. P.
Reuter, P. Reich, R. Schlickeiser, H. Ungerechts, R. L. Fiedler, E. B.
Waltman, K. J. Johnston, F. D. Ghigo |
astro-ph/9512136 | ROSAT/PSPC observation of the distant cluster CL0939+472 | We present results and an analysis of a ROSAT PSPC pointed observation of the
galaxy cluster CL0939+472. This very rich and very distant cluster is known to
contain an unusually high fraction of blue and E+A galaxies, and a lot of
merging of galaxies is going on. The X-ray properties we find are also quite
unusual. The... | 1995-12-20 | 2007-05-23 | [
"astro-ph"
] | S. Schindler and J. Wambsganss |
astro-ph/9512133 | Cosmological Implications of He-3 Destruction on the Red Giant Branch | Observations of stellar CNO isotope ratios indicate the presence of
additional mixing processes on the red giant branch. An estimate of the
resulting stellar He-3 depletion is made, as a function of stellar mass and
metallicity. Based on stellar nucleosynthesis and galactic chemical evolution
calculations, we determine... | 1995-12-20 | 2007-05-23 | [
"astro-ph"
] | Arnold I. Boothroyd (Monash) and Robert A. Malaney (CITA) |
astro-ph/9512140 | A Fast and Accurate Algorithm for Computing Tensor CBR Anisotropy | Inflation gives rise to a nearly scale-invariant spectrum of tensor
perturbations (gravitational waves), their contribution to the Cosmic
Background Radiation (CBR) anisotropy depends upon the present cosmological
parameters as well as inflationary parameters. The analysis of a
sampling-variance-limited CBR map offers ... | 1995-12-20 | 2014-10-13 | [
"astro-ph"
] | Michael S. Turner and Yun Wang (Fermilab) |
astro-ph/9512138 | Imaging the Lyman-alpha Forest | We show that it is now possible to image optically thick $\lya$ clouds in
fluorescent $\lya$ emission with a relatively long ($\sim 20 $hr) integration
on a large ($\sim 10 $m) telescope. For a broad range of column densities
($N\gsim 10^{18.5} \cm^{-2}$), the flux of $\lya$ photons from recombination
cascades is equal... | 1995-12-20 | 2009-10-28 | [
"astro-ph"
] | Andrew Gould and David H. Weinberg |
astro-ph/9512132 | Large-Scale Power-Spectrum from Peculiar Velocities | The power spectrum (PS) of mass density fluctuations, in the range $0.05 \leq
k \leq 0.2 \ihmpc$, is derived from the Mark III catalog of peculiar velocities
of galaxies, independent of ``biasing". It is computed from the density field
as recovered by POTENT with Gaussian smoothing of $12\hmpc$, within a sphere of
radi... | 1995-12-20 | 2016-08-30 | [
"astro-ph"
] | Tsafrir Kolatt and Avishai Dekel |
astro-ph/9512137 | Extinction Map of Baade's Window | Recently Wo\'zniak \& Stanek (1996) proposed a new method to investigate
interstellar extinction, based on two band photometry, which uses red clump
stars as a means to construct the reddening curve. I apply this method to the
color-magnitude diagrams obtained by the Optical Gravitational Lensing
Experiment (OGLE) to c... | 1995-12-20 | 2009-10-28 | [
"astro-ph"
] | K. Z. Stanek (Princeton University Observatory) |
astro-ph/9512139 | Cosmological-Parameter Determination with Microwave Background Maps | The angular power spectrum of the cosmic microwave background (CMB) contains
information on virtually all cosmological parameters of interest, including the
geometry of the Universe ($\Omega$), the baryon density, the Hubble constant
($h$), the cosmological constant ($\Lambda$), the number of light neutrinos,
the ioniz... | 1995-12-20 | 2009-10-28 | [
"astro-ph",
"hep-ph"
] | Gerard Jungman (Syracuse), Marc Kamionkowski (Columbia), Arthur
Kosowsky (Harvard), David N. Spergel (Princeton) |
astro-ph/9512120 | 3He in stars of low and intermediate mass | We follow the evolution of 3He in stars of mass 0.8 -- 10 M (solar units) for
Pop. I and II compositions from the main sequence until advanced stages on the
AGB. Under standard assumptions we confirm earlier results of more restricted
investigations that low-mass stars up to 5 M are net producers of 3He. We show
that t... | 1995-12-19 | 2011-05-23 | [
"astro-ph"
] | Achim Weiss (Max-Planck-Institut f. Astrophysik, Garching, Germany)
Josef Wagenhuber (Max-Planck-Institut f. Astrophysik, Garching, Germany),
Pavel A. Denissenkov (Max-Planck-Institut f. Astrophysik, Garching, Germany
and St. Petersburg University, Russia) |
astro-ph/9512123 | Disk galaxies at Z=0 and at High Redshift: an explanation of the
observed evolution of damped Ly-alpha systems | The analysis of disk formation is based on the White & Rees (1978) picture,
in which disk galaxies form by continuous cooling and accretion of gas within a
merging hierarchy of dark matter halos. A simple Kennicutt law of star
formation for disks, based on a single- fluid gravitational instability model
is introduced. ... | 1995-12-19 | 2015-06-24 | [
"astro-ph"
] | Guinevere Kauffmann (MPA,Garching) |
astro-ph/9512124 | Are There MeV Gamma-Ray Bursts? | It is often stated that gamma-ray bursts (GRBs) have typical energies of
several hundred keV. Is this a real feature of GRBs or is it due to an
observational bias? We consider the possibility that bursts of a given
bolometric luminosity occur with a hardness distribution $p(H)d \log H \propto
H^\gamma d \log H$. We mod... | 1995-12-19 | 2009-10-28 | [
"astro-ph"
] | Tsvi Piran and Ramesh Narayan |
astro-ph/9512127 | An analytic model for the spatial clustering of dark matter haloes | We develop a simple analytic model for the gravitational clustering of dark
matter haloes to understand how their spatial distribution is biased relative
to that of the mass. The statistical distribution of dark haloes within the
initial density field (assumed Gaussian) is determined by an extension of the
Press-Schech... | 1995-12-19 | 2015-06-24 | [
"astro-ph"
] | H. J. Mo and S. D. M. White |
astro-ph/9512119 | A Constraint on the Distance Scale to Cosmological Gamma--Ray Bursts | If gamma-ray bursts have a cosmological origin, the sources are expected to
trace the large-scale structure of luminous matter in the universe. I use a new
likelihood method that compares the counts-in-cells distribution of gamma-ray
bursts in the BATSE 3B catalog with that expected from the known large-scale
structure... | 1995-12-19 | 2007-05-23 | [
"astro-ph"
] | Jean M. Quashnock (Department of Astronomy and Astrophysics,
University of Chicago) |
astro-ph/9512121 | The CNO Isotopes: Deep Circulation in Red Giants and First and Second
Dredge-up | It is demonstrated that deep circulation mixing below the base of the
standard convective envelope, and the consequent "cool bottom processing" (CBP)
of the CNO isotopes, can reproduce the trend with stellar mass of the C-12/C-13
observations in low mass red giants. (This trend is opposite to what is
expected from stan... | 1995-12-19 | 2008-02-03 | [
"astro-ph"
] | Arnold I. Boothroyd (Monash/Caltech), I.-Juliana Sackmann (Caltech) |
astro-ph/9512129 | The Evolution of Viscous Inclined Disks in Axisymmetric and Triaxial
Galaxies | We have used a set of equations developed by Pringle (1992) to follow the
evolution of a viscous twisted disk in a galaxy-like potential which is
stationary or tumbling relative to inertial space. In an axisymmetric
potential, the disk settles to the equatorial plane at a rate determined
largely by the coefficient $\nu... | 1995-12-19 | 2009-10-28 | [
"astro-ph"
] | Wesley N. Colley (Princeton University Observatory, Princeton, NJ) and
Linda S. Sparke (University of Wisconsin, Madison, WI) |
astro-ph/9512131 | Adding Long Wavelength Modes to an $N$-Body Simulation | We present a new method to add long wavelength power to an evolved $N$-body
simulation, making use of the Zel'dovich (1970) approximation to change
positions and velocities of particles. We describe the theoretical framework of
our technique and apply it to a P$^3$M cosmological simulation performed on a
cube of $100$ ... | 1995-12-19 | 2009-10-28 | [
"astro-ph"
] | Giuseppe Tormen (IoA, MPA) and Edmund Bertschinger (MIT) |
astro-ph/9512130 | The Structure of Dark Matter Halos | I use $N$-body simulations to investigate the morphology and the dynamical
evolution and properties of dark matter halos in clusters of galaxies. My
sample consists of nine massive halos, coming from an Einstein-de Sitter
universe with scale free power spectrum and spectral index $n = -1$. Halos are
resolved by 20,000 ... | 1995-12-19 | 2007-05-23 | [
"astro-ph"
] | Giuseppe Tormen |
astro-ph/9512126 | A Simultaneous Spectral Invariant Analysis of the GRB Count Distribution
and Time Dilation | The analysis of the BATSE's count distribution within cosmological models
suffers from observational uncertainties due to the variability of the bursts'
spectra: when BATSE observes bursts from different redshifts at a fixed energy
band it detects photons from different energy bands at the source. This adds a
spectral ... | 1995-12-19 | 2009-10-28 | [
"astro-ph"
] | Ehud Cohen and Tsvi Piran |
astro-ph/9512125 | Hydrodynamic Time Scales and Temporal Structure in GRBs | We calculate the hydrodynamic time scales for a spherical ultra-relativistic
shell that is decelerated by the ISM and discuss the possible relations between
these time scales and the observed temporal structure in $\gamma$-ray bursts.
We suggest that the bursts' duration is related to the deceleration time, the
variabi... | 1995-12-19 | 2007-05-23 | [
"astro-ph"
] | Re'em Sari (1), Tsvi Piran (1,2) ((1) Hebrew University, Jerusalem,
Israel, (2) ITP, University of California) |
astro-ph/9512122 | Creation of Li-7 and Destruction of He-3, Be-9, B-10, and B-11 in Low
Mass Red Giants, Due to Deep Circulation | It has been demonstrated that Li-7 can be created in low mass red giant
stars, via the Cameron-Fowler mechanism, due to extra deep mixing and the
associated "cool bottom processing" (CBP). Under certain conditions, this Li-7
creation can take the place of the Li-7 destruction normally expected. Note
that such extra mix... | 1995-12-19 | 2008-02-03 | [
"astro-ph"
] | I.-Juliana Sackmann (Caltech), Arnold I. Boothroyd (Monash/Caltech) |
astro-ph/9512128 | Unlensing Multiple Arcs in 0024+1654: Reconstruction of the Source Image | A unique reconstruction of the image of a high redshift source galaxy
responsible for multiple long arcs in the z = 0.4 cluster 0024+1654 is obtained
by inverse lensing. Deep B and I imaging with the Hubble Space Telescope (Based
on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space
Telescope ... | 1995-12-19 | 2009-10-28 | [
"astro-ph"
] | Wesley N. Colley (Princeton University Observatory, Princeton, NJ), J.
Anthony Tyson (AT&T Bell Labs, Murray Hill, NJ) and Edwin L. Turner
(Princeton University Observatory, Princeton, NJ) |
astro-ph/9512113 | Orbital decay of protostellar binaries in molecular clouds | The evolution of a protostellar binary system is investigated while it is
embedded in its parent molecular cloud core and acted upon by gas drag due to
dynamical friction. Approximate analytical results are obtained for the energy
and angular momentum evolution of the orbit in the limiting cases, where the
velocity is ... | 1995-12-18 | 2015-06-24 | [
"astro-ph"
] | U. Gorti and H. C. Bhatt (Indian Institute of Astrophysics, Bangalore
India) |
astro-ph/9512115 | Compton scattering effects in the spectra of soft gamma-ray repeaters | The association of all three soft gamma-ray repeaters (SGRs) with supernova
remnants has made possible estimates of the distance to and luminosity of the
sources of SGRs, which have provided a starting point for detailed modeling.
One of the most popular classes of models involves strongly magnetized neutron
stars, wit... | 1995-12-18 | 2007-05-23 | [
"astro-ph"
] | M.Coleman Miller and Tomasz Bulik |
astro-ph/9512117 | The White Dwarf Companions of 56 Per and HR 3643 | We have obtained low-dispersion IUE spectra of the stars 56 Persei (F4 V) and
HR 3643 (F7 II), as part of a survey of late-type stars with a 1565 A flux
excess in the TD-1 ultraviolet sky survey. The IUE spectrum of each star
reveals the presence of a hot white dwarf companion. We fit the Ly alpha
profile and ultraviol... | 1995-12-18 | 2009-10-28 | [
"astro-ph"
] | Wayne Landsman (Hughes STX), Theodore Simon (U. of Hawaii), Pierre
Bergeron (U. de Montreal) |
astro-ph/9512112 | An Observational Limit on Circumstellar H-Alpha from Supernova 1994D | We searched for narrow H$\alpha$ in a high-resolution spectrum of SN 1994D
taken 10 days before maximum, and found none. We estimate the limit this places
on the progenitor mass loss, and find that it is competitive with recent radio
limits, and excludes the highest-mass-loss-rate symbiotic systems as possible
progenit... | 1995-12-18 | 2007-05-23 | [
"astro-ph"
] | R.J. Cumming, P. Lundqvist, L.J. Smith, M. Pettini, D.L. King |
astro-ph/9512111 | Unveiling hidden structures in the Coma cluster | We have assembled a large data-set of 613 galaxy redshifts in the Coma
cluster, the largest presently available for a cluster of galaxies. We have
defined a sample of cluster members complete to b$_{26.5}=20.0$, using a
membership criterion based on the galaxy velocity, when available, or on the
galaxy magnitude and co... | 1995-12-18 | 2007-05-23 | [
"astro-ph"
] | A.Biviano, F.Durret, D.Gerbal, O.LeFevre, C.Lobo, A.Mazure, E.Slezak |
astro-ph/9512116 | Breaking the sound barrier in recombination fronts | We exploit a generic instability in the integration of steady, sonic,
near-isothermal flows to find the complete transition diagram for recombination
fronts (for a model system of equations). The instability requires the
integration of the flow equations for speeds between the isothermal and
adiabatic sound speeds to b... | 1995-12-18 | 2015-06-24 | [
"astro-ph"
] | R.J.R. Williams & J.E. Dyson (Department of Physics and Astronomy,
University of Manchester UK) |
astro-ph/9512114 | Luminosity Function of Early-Type Galaxies in Clusters Cores | We show the possibility to exploit the non-linear behaviour of artificial
neural network (ANN) for the identification of the early-type component of the
population of the core of clusters of galaxies. We result in a measurement of
the luminosity function of the E/S0 galaxies which disfavours the hypothesis of
a univers... | 1995-12-18 | 2007-05-23 | [
"astro-ph"
] | Emilio Molinari (OAB), Riccardo Smareglia (OAT) |
astro-ph/9512118 | CIV Absorption From Galaxies in the Process of Formation | We investigate the heavy element QSO absorption systems caused by gas
condensations at high redshift which evolve into galaxies with circular
velocity of 100 to 200 km/s at the present epoch. Artificial QSO spectra were
generated for a variety of lines-of-sight through regions of the universe
simulated with a hydrodyna... | 1995-12-18 | 2009-10-28 | [
"astro-ph"
] | Martin Haehnelt (MPA), Matthias Steinmetz (MPA) and Michael Rauch
(Caltech) |
astro-ph/9512110 | Gravitational Lensing in the Universe | This work reviews the basic theoretical aspects, the main observational
evidences and the recent applications of gravitational lensing in the Universe.
The article is aimed particularly at providing the readers who don't work on
gravitational lensing a relatively easy introduction to this active research
field in today... | 1995-12-17 | 2007-05-23 | [
"astro-ph"
] | Xiang-Ping Wu |
astro-ph/9512109 | Kinematic Diagnostics of Disks Around Young Stars: CO Overtone Emission
from WL16 and 1548C27 | We report high spectral resolution observations of the CO vibrational
overtone emission from the young stellar object 1548C27; our observations
include both the CO(2-0) and CO(5-3) bandhead regions. These data and similar
observations of the young stellar object WL16, reported in a previous
contribution to this journal... | 1995-12-16 | 2009-10-28 | [
"astro-ph"
] | Joan Najita (CfA), John Carr (NRL), Al Glassgold (NYU), Frank Shu (UC
Berkeley), and Alan Tokunaga (IfA) |
astro-ph/9512106 | Optimizing Higher-order Lagrangian Perturbation Theory for Cold Dark
Matter Models | We report on the performance of Lagrangian perturbation theory up to the
second order for the standard cold dark matter (SCDM) and broken scale
invariance (BSI) scenarios. We normalize both models to the COBE data, the BSI
model serves as an example of models which fit the small-scale power of galaxy
surveys. We optimi... | 1995-12-15 | 2007-05-23 | [
"astro-ph"
] | A.G. Weiss, S. Gottloeber, T. Buchert |
astro-ph/9512101 | Supersonic Collisions between Two Gas Streams | A star around a massive black hole can be disrupted tidally by the gravity of
the black hole. Then, its debris may form a precessing stream which may even
collide with itself. In order to understand the dynamical effects of the
stream-stream collision on the eventual accretion of the stellar debris onto
the black hole,... | 1995-12-15 | 2009-10-28 | [
"astro-ph"
] | Hyung Mok Lee, Hyesung Kang, and Dongsu Ryu |
astro-ph/9512104 | X-ray evolution in the ROSAT Brightest Cluster Sample | We present the X-ray luminosity function (XLF) of the ROSAT Brightest Cluster
Sample (BCS), an X-ray selected, flux limited sample of 172 clusters of
galaxies at $z\leq 0.3$ compiled from ROSAT All-Sky Survey data. While the bulk
of the BCS consists of Abell clusters, the sample also contains Zwicky clusters
and purely... | 1995-12-15 | 2007-05-23 | [
"astro-ph"
] | H. Ebeling (1), S.W. Allen (1), C.S. Crawford (1), A.C. Edge (1), A.C.
Fabian (1), H. B\"ohringer (2), W. Voges (2), J.P. Huchra (3) ((1) IoA,
Cambridge, UK, (2) MPE, Garching, Germany, (3) CfA, Cambridge, USA) |
astro-ph/9512103 | Monitoring of the Einstein Cross with the Nordic Optical Telscope | We report results from five years of monitoring of the Einstein Cross (Q
2237+0305) with the Nordic Optical Telescope. The photometry, mainly in the R
and I bands, has been performed by a PSF fitting and `cleaning' procedure, in
which the four image components as well as the lens galaxy and its nucleus are
iteratively ... | 1995-12-15 | 2008-11-26 | [
"astro-ph"
] | R. Oestensen, S. Refsdal, R. Stabell, J. Teuber, P.I. Emanuelsen, L.
Festin, R. Florentin-Nielsen, G. Gahm, E. Gullbring, J. Hjorth, M. Jablonski,
A.O. Jaunsen, A.A. Kaas, H. Karttunen, J. Kotilainen, E. Laurikainen, H.
Lindgren, P. Maehoenen, K. Nilsson, G. Olofsson, Oe. Olsen, B.R. Pettersen,
V. Piirola, A.N.... |
astro-ph/9512105 | Analyzing Galaxy Catalogues with Minkowski Functionals | We discuss the application of Minkowski functionals to galaxy catalogues with
emphasis on the boundary corrections and point out the relevance for other
statistical methods. The analysis of a cubic subsample of the CfA--1 data
serves as an example. | 1995-12-15 | 2007-05-23 | [
"astro-ph"
] | M. Kerscher, J. Schmalzing, T. Buchert |
astro-ph/9512107 | Averaging Hypotheses in Newtonian Cosmology | Average properties of general inhomogeneous cosmological models are discussed
in the Newtonian framework. It is shown under which circumstances the average
flow reduces to a member of the standard Friedmann--Lema\^\i tre cosmologies.
Possible choices of global boundary conditions of inhomogeneous cosmologies as
well as... | 1995-12-15 | 2008-02-03 | [
"astro-ph"
] | T. Buchert |
astro-ph/9512108 | Large-Scale Structure at z~2.5 | We have made a statistically complete, unbiased survey of C IV systems toward
a region of high QSO density near the South Galactic Pole using 25 lines of
sight spanning $1.5<z<2.8$. Such a survey makes an excellent probe of
large-scale structure at early epochs. We find evidence for structure on the
$15-35h^{-1}$ prope... | 1995-12-15 | 2015-06-24 | [
"astro-ph"
] | G. M. Williger, C. Hazard, J. A. Baldwin, R. G. McMahon |
astro-ph/9512102 | Cold Dark Matter Models with a Cosmological Constant | We use linear and quasi-linear perturbation theory to analyse cold dark
matter models of structure formation in spatially flat models with a
cosmological constant. Both a tilted spectrum of density perturbations and a
significant gravitational wave contribution to the microwave anisotropy are
allowed as possibilities. ... | 1995-12-15 | 2015-06-24 | [
"astro-ph"
] | Andrew R Liddle, David H Lyth, Pedro T P Viana and Martin White |
astro-ph/9512098 | CCD Photometry of Nova V1500 Cygni Twenty Years After | We report on CCD photometry of Nova V1500 Cygni obtained in July 1995 to show
that twenty years after outburst, being of about 18~mag, the star can still be
observed with small telescopes. The 0.1396 day period continues to be stable. | 1995-12-14 | 2007-05-23 | [
"astro-ph"
] | I. Semeniuk, A. Olech and M. Nalezyty (Warsaw University Observatory) |
astro-ph/9512099 | Gasdynamics and Starbursts in Major Mergers | Using numerical simulation, we study the development of gaseous inflows and
triggering of starburst activity in mergers of comparable-mass disk galaxies.
In all encounters studied, the galaxies experience strong gaseous inflows and
moderate to intense starburst activity. We find that galaxy structure plays a
dominant r... | 1995-12-14 | 2009-10-28 | [
"astro-ph"
] | Chris Mihos (UCSC, JHU) and Lars Hernquist (UCSC) |
astro-ph/9512093 | Black Hole, Jet, and Disk: The Universal Engine | In this paper I review the results of our ongoing project to investigate the
coupling between accretion disk and radio jet in galactic nuclei and stellar
mass black holes. We find a good correlation between the UV bump luminosity and
the radio luminosities of AGN, which improves upon the usual [OIII]/radio
correlations... | 1995-12-14 | 2015-06-24 | [
"astro-ph"
] | Heino Falcke |
astro-ph/9512097 | IRAS 0421+0400: jets crossing an ISM/IGM interface? | The emission lines in the active galaxy IRAS 0421+0400 show a dramatic (~ 900
km/s) increase in the velocity spread at the position of radio hotspots which
are located at the beginning of extended radio lobes. We study a model which
explains this phenomenon as the result of a jet emerging through the boundary
between t... | 1995-12-14 | 2007-05-23 | [
"astro-ph"
] | W. Steffen, A.J. Holloway, A. Pedlar, D.J. Axon |
astro-ph/9512096 | Comparison of Chemical Evolution Models for the Galactic Disk | The {\it best} chemical evolution models for the galactic disk computed by
different groups with different assumptions are compared with each other and
with the observational constraints. Differences and similarities between the
models are discussed, emphasizing the importance of testing not only the solar
neighbourhoo... | 1995-12-14 | 2007-05-23 | [
"astro-ph"
] | Monica Tosi (Osservatorio Astronomico di Bologna) |
astro-ph/9512092 | The missing x-rays in Sgr A*: evidence for - not against - a
supermassive black hole | We present a simple argument that the missing x-ray flux from the Galactic
Center source Sgr~A* ist not evidence {\it against} -- as claimed by Goldwurm
et al. 1994 -- but rather indirect evidence {\it for} the presence of a
supermassive black hole. The radio spectrum provides a strict {\it lower} limit
for the size of... | 1995-12-14 | 2007-05-23 | [
"astro-ph"
] | Heino Falcke, Peter L. Biermann |
astro-ph/9512095 | The Local Stability of Accretion Disks with Advection | The local stability of accretion disks with advection is studied together
with the considerations of radial viscous force and thermal diffusion. For a
geometrically thin, radiative cooling dominated disk, the thermal diffusion has
nearly no effects on the thermal and viscous modes. The including of thermal
diffusion, h... | 1995-12-14 | 2009-10-28 | [
"astro-ph"
] | Xue-Bing Wu, Qi-Bin Li (Beijing Astronomical Observatory, Chinese
Academy of Sciences) |
astro-ph/9512100 | A Tighter Test of Local Lorentz Invariance using PSR J2317+1439 | Gravity being a long-range force, one might {\it a priori} expect the
Universe's global matter distribution to select a preferred rest frame for
local gravitational physics. The phenomenology of preferred-frame effects, in
the strong-gravitational field context of binary pulsars, is described by two
parameters $\hat{\a... | 1995-12-14 | 2009-10-28 | [
"astro-ph",
"gr-qc"
] | J. F. Bell, F. Camilo, and T. Damour |
astro-ph/9512094 | Unbiased Cluster Lens Reconstruction | Weak lensing observations measure the shear field and hence the gradient of
the dimensionless surface density $\kappa$. We present several new algorithms
to recover $\kappa$ {}from shear estimates on a finite region and compare how
they perform with realistically noisy data. The reconstruction methods studied
here are ... | 1995-12-14 | 2009-10-28 | [
"astro-ph"
] | Gordon Squires and Nick Kaiser |
astro-ph/9512086 | Cosmological Adventures in the Lyman Forest | The properties of the Lyman-$\alpha$ absorptions observed in the spectra of
QSOs are reviewed: the distribution of column densities and Doppler widths, the
redshift evolution, the ``inverse effect'', the clustering. By interpreting the
statistics of the line parameters insight is gained about the nature of the
absorber... | 1995-12-13 | 2007-05-23 | [
"astro-ph"
] | S. Cristiani |
astro-ph/9512088 | Galaxy formation and evolution: what to expect from hierarchical
clustering models | We give a brief review of current theoretical work in galaxy formation.
Recent results from N-body and N-body/hydrodynamic simulations, and from
semianalytic modelling are discussed. We present updated versions of some
figures from Cole et al (1994). In particular, we show the effect of using the
revised stellar popula... | 1995-12-13 | 2011-04-15 | [
"astro-ph"
] | C.S. Frenk, C.M. Baugh, S. Cole (Durham Univ., U.K.) |
astro-ph/9512083 | Monte Carlo simulations of dusty spiral galaxies: extinction and
polarization properties | We present Monte Carlo simulations of dusty spiral galaxies, modelled as
bulge + disk systems, aimed to study their extinction and polarization
properties. The extinction parameters (absorption and scattering) of dust
grains are calculated from Mie's theory for a full distribution of sizes and
materials; the radiation ... | 1995-12-13 | 2009-10-28 | [
"astro-ph"
] | Simone Bianchi, Andrea Ferrara, Carlo Giovanardi |
astro-ph/9512084 | High Resolution Observations of the QSO BR1202-0725: Deuterium and Ionic
Abundances at Redshifts Above z=4 | We present results from 12 km/s resolution echelle spectroscopy of the bright
$z=4.694$ QSO BR1202-0725. A preliminary analysis shows that high metallicity
narrow line absorption clouds are present up to the redshift of the quasar. A
damped Ly$\alpha$ system with an HI column density of $3.1 \times 10^{20}$
cm$^{-2}$ a... | 1995-12-13 | 2007-05-23 | [
"astro-ph"
] | E. J. Wampler, G. M. Williger, J. A. Baldwin, R. F. Carswell, C.
Hazard, R. G. McMahon |
astro-ph/9512085 | Resolved Atomic Super-clouds in Spiral Galaxies | High quality data are presented of neutral hydrogen emission and absorption
in the fields of eleven of the nearest spiral galaxies. Multi-configuration VLA
observations have provided angular resolution of 6~arcsec (corresponding to
about 100~pc at the average galaxy distance of 3.5~Mpc) and velocity resolution
of 6~km~... | 1995-12-13 | 2007-05-23 | [
"astro-ph"
] | Robert Braun (NFRA) |
astro-ph/9512090 | What is 3C 324? | We report ground based and HST observations of the z=1.206 radio galaxy 3C
324, a prototypical example of the radio-optical ``alignment effect.'' While
infrared images shows a simple, round object reminiscent of a giant elliptical
galaxy, the HST images reveal a spectacular, linear chain of UV-bright
subcomponents clos... | 1995-12-13 | 2015-06-24 | [
"astro-ph"
] | Mark Dickinson (STScI), Arjun Dey (UC Berkeley/IGPP), and Hyron
Spinrad (UC Berkeley) |
astro-ph/9512089 | Hydrodynamic Instabilities in Close Binary Systems | Equilibrium fluid configurations for close binary systems can become {\em
globally unstable\/}. Instabilities arise from the strong tidal interaction
between the two components, which tends to make the effective two-body
potential governing the orbital motion steeper than $1/r$. As a result, a
circular orbit can become... | 1995-12-13 | 2007-05-23 | [
"astro-ph"
] | Frederic A. Rasio (MIT) |
astro-ph/9512082 | Jeans and Boltzmann Solutions for Oblate Galaxies with Flat Rotation
Curves | A general solution of the Jeans equations for oblate scale-free logarithmic
potentials is given. This provides all possible second velocity moments that
can hold up a stellar population of flattened scale-free density against the
gravity field. A two-parameter subset of second moments for the self-consistent
density of... | 1995-12-13 | 2015-06-24 | [
"astro-ph"
] | P.T. de Zeeuw (Leiden), N.W. Evans (Oxford), M. Schwarzschild
(Princeton) |
astro-ph/9512087 | The Average Mass-to-Light Profile of Galaxy Clusters | The systematic errors in the virial mass-to-light ratio, M_v/L, of galaxy
clusters as an estimator of the field M/L value are assessed. We overlay 14
clusters in redshift space to create an ensemble cluster which averages over
substructure and asymmetries. The combined sample, including background,
contains about 1150 ... | 1995-12-13 | 2009-10-28 | [
"astro-ph"
] | R.G. Carlberg, H.K.C. Yee and E.Ellingson |
astro-ph/9512081 | Polarization Modes in a Strongly Magnetized Hydrogen Gas | We investigate the properties of the normal modes in a strongly magnetized
hydrogen gas for conditions expected in atmospheres of isolated neutron stars.
We derive and compute the polarizations and absorption coefficients of the
normal modes from the polarizabily tensor using both analytical approximations
and numeri... | 1995-12-13 | 2016-08-30 | [
"astro-ph"
] | Tomasz Bulik and George Pavlov |
astro-ph/9512091 | Observational Searches for Solar g-modes: Some Theoretical
Considerations | We argue that the solar g-modes are unlikely to have caused the discrete
peaks in the power spectrum of the solar wind flux observed by Thomson et al.
(1995). The lower limit to the energy of individual g-modes, using the
amplitudes given by Thomson et al., is estimated to be at least 10$^{36}$ erg
for low order g-mode... | 1995-12-13 | 2016-08-30 | [
"astro-ph"
] | Pawan Kumar, Eliot Quataert (MIT), and John N. Bahcall (IAS) |
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