Cosmological constraints from Chandra observations of galaxy clusters

Details Cosmological constraints from Chandra observations of galaxy clusters Cosmological constraints from Chandra observations of galaxy clusters

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004fxra.book..135a&link_type=abstract

In: Frontiers of X-ray astronomy. Edited by A. C. Fabian, K. A. Pounds, R. D. Blandford. Cambridge (UK): Cambridge University Pr

Astronomy and Astrophysics

Astronomy

Galaxy Clusters, Cosmology

Scientific paper

Here, we present results from Chandra X-ray and gravitational lensing studies (supplemented, where available, by high-quality optical dynamical data) of a sample of six of the most luminous, dynamically relaxed clusters of galaxies known: PKS0745-191 (z=0.103), Abell 2390 (z=0.230), Abell 1835 (z=0.252), MS2137.3-2353 (z=0.313), RXJ1347.5-1145 (z=0.451) and 3C 295 (z=0.461). The high degree of dynamical relaxation in these clusters, which is evidenced by their regular optical and X-ray morphologies, minimizes the systematic uncertainties in the mass measurements. The fact that these clusters are amongst the most luminous and, by implication, most massive clusters known (as identified from the ROSAT All-Sky Survey and follow-up observations) also makes them, individually, the most powerful probes for cosmological studies.

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