Now showing items 11-20 of 39
The merger in abell 576: A line-of-sight bullet cluster?
(Univ Chicago Press, 2007-10-20)
Using a combination of Chandra and XMM-Newton observations, we confirmed the presence of a significant velocity gradient along the northeast-southwest direction in the intracluster gas of the cluster Abell 576. The results ...
The temperature-mass relation in magnetized galaxy clusters
(EDP Sciences, 2001-04-01)
We use cosmological, magneto-hydrodynamic simulations of galaxy clusters to quantify the dynamical importance of magnetic fields in these clusters. The set-up of initial magnetic field strengths at high redshifts is chosen ...
Simulations of the formation, evolution and clustering of galaxies and quasars
(Macmillan Magazines Ltd, 2005-06-01)
The cold dark matter model has become the leading theoretical picture for the formation of structure in the Universe. This model, together with the theory of cosmic inflation, makes a clear prediction for the initial ...
The ultimate halo mass in a ?CDM universe
(Blackwell Science Ltd, 2004-10-01)
In the far future of an accelerating ?CDM cosmology, the cosmic web of large-scale structure consists of a set of increasingly isolated haloes in dynamical equilibrium. We examine the approach of collisionless dark matter ...
A MaxBCG Catalog of 13,823 Galaxy Clusters from the Sloan Digital Sky Survey
(Univ Chicago Press, 2007-05-01)
We present a catalog of galaxy clusters selected using the maxBCG red-sequence method from Sloan Digital Sky Survey photometric data. This catalog includes 13,823 clusters with velocity dispersions greater than ~400 km s-1 ...
The asymptotic structure of space-time
(World Scientific Publ Co Pte Ltd, 2003-10)
Astronomical observations strongly suggest that our universe is now accelerating and contains a substantial admixture of dark vacuum energy. Using numerical simulations to study this newly consolidated cosmological model ...
Clustering of galaxy clusters in cold dark matter universes
(Blackwell Science Ltd, 2000-11)
The mass function of dark matter haloes
(Blackwell Publishing Ltd, 2001-02-21)
We combine data from a number of N-body simulations to predict the abundance of dark haloes in cold dark matter (CDM) universes over more than four orders of magnitude in mass. A comparison of different simulations suggests ...
The L X – M relation of clusters of galaxies
(Blackwell Publishing Ltd, 2008-06-11)
We present a new measurement of the scaling relation between X-ray luminosity and total mass for 17 000 galaxy clusters in the maxBCG cluster sample. Stacking subsamples within fixed ranges of optical richness, N 200 , we ...