Now showing items 31-40 of 48
Previrialization
(Univ Chicago Press, 1992-07-20)
We report the results of N-body experiments employing Gaussian random initial conditions designed to address the effect of previrialization recently examined by Peebles. The central issue is whether the development of ...
Structure in a loitering universe.
(World Scientific Publ Co Pte Ltd, 1992-03-01)
The authors study the formation of structure for a universe that undergoes a recent loitering phase. They compare the nonlinear mass distribution to that in a standard, matter dominated cosmology. The statistical aspects ...
The L-X-T relation and intracluster gas fractions of X-ray clusters
(Blackwell Science Ltd, 1999-05-21)
We re-examine the X-ray luminosity-temperature relation using a nearly homogeneous data set of 24 clusters selected for statistically accurate temperature measurements and absence of strong cooling flows. The data exhibit ...
The Morphology-Density Relation for Galaxies in A Cold Dark Matter-Dominated Universe
(Univ Chicago Press, 1990-12-10)
The Santa Barbara cluster comparison project: A comparison of cosmological hydrodynamics solutions
(Univ Chicago Press, 1999-11-10)
We have simulated the formation of an X-ray cluster in a cold dark matter universe using 12 different codes. The codes span the range of numerical techniques and implementations currently in use, including smoothed particle ...
Galaxy dynamics in clusters
(Univ Chicago Press, 1996-12-01)
We use high-resolution simulations to study the formation and distribution of galaxies within a cluster that forms hierarchically. We follow both dark matter and a gas component that is subject to thermal pressure, shocks, ...
The Baryon Content Of Galaxy Clusters - A Challenge To Cosmological Orthodoxy
(Macmillan Magazines Ltd., 1993-12-02)
Baryonic matter constitutes a larger fraction of the total mass of rich galaxy clusters than is predicted by a combination of cosmic nucleosynthesis considerations (light-element formation during the Big Bang) and standard ...
The Contribution of Galaxy Clusters to the Soft-X-Ray Background
(Univ Chicago Press, 1992-05-20)
We examine models for the expected contribution to the X-ray background (XRB) from clusters of galaxies in a flat universe with a spectrum of fluctuations corresponding to the standard cold dark matter picture and for a ...
Cosmological simulations with scale-free initial conditions. I. Adiabatic hydrodynamics
(Univ Chicago Press, 1998-08-10)
We analyze hierarchical structure formation based on scale-free initial conditions in an Einstein-de Sitter universe, including a baryonic component with Omega(bary) = 0.05. We present three independent, smoothed particle ...