Now showing items 21-30 of 76
Expectations for an interferometric Sunyaev-Zeldovich effect survey for galaxy clusters
(Univ Chicago Press, 2000-12-01)
We estimate the expected yield of a nontargeted survey for galaxy clusters using the Sunyaev-Zeldovich effect (SZE). Estimating survey yields requires a detailed model for both cluster properties and the survey strategy. ...
A cold front in a preheated galaxy cluster
(Univ Chicago Press, 2002-10-10)
We present a simulated cluster of galaxies, modeled with a preheated intracluster medium, that exhibits X-ray features similar to the cold fronts seen in Chandra observations. Mock observations at a particular epoch show ...
Cosmological Constraints from Observed Cluster X-Ray Morphologies
(Univ Chicago Press, 1995-07-01)
We use a representative sample of 65 galaxy dusters observed with the Einstein IPC to constrain the range of cluster X-ray morphologies. We develop and apply quantitative and reproducible measures of cluster X-ray morphologies ...
Constraints on Omega(0) and cluster evolution using the ROSAT logN-logS relation
(Blackwell Science Ltd, 1998-04-21)
We examine the Likelihoods of different cosmological models and cluster evolutionary histories by comparing semi-analytical predictions of X-ray cluster number counts with observational data from the ROSAT satellite. We ...
A Simulation of the Intracluster Medium With Feedback from Cluster Galaxies
(Univ Chicago Press, 1994-12-20)
We detail method and report first results from a three-dimensional hydrodynamical and N-body simulation of the formation and evolution of a Coma-sized cluster of galaxies, with the intent of studying the history of the ...
The X-ray size-temperature relation for intermediate-redshift galaxy clusters
(Univ Chicago Press, 2000-11-20)
We present the first measurements of the X-ray size-temperature (ST) relation in intermediate-redshift (z similar to 0.30) galaxy clusters. We interpret the local ST relation (z similar to 0.06) in terms of underlying ...
The Cosmological Dependence of Cluster Density Profiles
(Univ Chicago Press, 1994-10-20)
We use N-body simulations to study the shape of mean cluster density and velocity profiles in the nonlinear regime formed via gravitational instability. The dependence of the final structure on both cosmology and initial ...
Mass estimates of X-ray clusters
(Univ Chicago Press, 1996-10-01)
We use cosmological gasdynamic simulations to investigate the accuracy of galaxy cluster mass estimates based on X-ray observations. The experiments follow the formation of clusters in different cosmological models and ...
A multiphase model for the intracluster medium
(Blackwell Science Ltd, 2000-07-21)
Constraints on the clustered mass density Omega(m) of the Universe derived from the observed population mean intracluster gas fraction [f(ICM)] of X-ray clusters may be biased by reliance on a single-phase assumption for ...
Detecting intracluster gas motion in galaxy clusters: Mock Astro-E2 observations
(Univ Chicago Press, 2005-10-01)
We explore the detectability of bulk motions in the X-ray-emitting intracluster medium using a catalog of 1836 mock Astro-E2 observations of simulated clusters of galaxies. We generate high-resolution mock spectra for two ...