X-rays from Clusters of Galaxies

Astrophysics, abstract
astro-ph/0304020

From: AC Fabian <acf@ast.cam.ac.uk>

Date: Tue, 1 Apr 2003 11:23:31 GMT   (630kb)

Authors:
A.C. Fabian,
S.W. Allen (Institute of Astronomy, Cambridge, UK)

Comments: 12 pages, 10 figures, to appear in the proceedings of the XXI Texas
Symposium on Relativistic Astrophysics held on December 9–13 2002, in
Florence, Italy

The X-ray emission from clusters of galaxies enables them to be used as good
cosmological probes and as an example for massive galaxy formation. The gas
mass fraction in clusters should be a universal standard which by means of
Chandra observations enables Omega_m to be determined to better than 15 per
cent accuracy. Future observations of its apparent variation with redshift will
enable Omega_Lambda to be measured. The interplay of radiative cooling and
heating in cluster cores may reveal the dominant processes acting during the
formation of the baryonic part of massive galaxies.

References and citations for this submission:

SLAC-SPIRES HEP (refers to ,
cited by, arXiv reformatted)