Mathematics – Logic
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2669h&link_type=abstract
Chandra proposal ID #10800857
Mathematics
Logic
Scientific paper
Understanding relationships between observable baryons in galaxy clusters and their underlying dark matter distributions is a crucial goal, particularly for using clusters as cosmological probes. Recent work indicates massive, low-Lx clusters exist at all redshifts, in conflict with self-similarity predictions. The only means to quantify this possibility is to observe a sample of clusters that have been chosen with no regard to their X-ray properties. We propose ACIS-S observations of 11 clusters at 0.15 < z < 0.45 chosen from the RCS cluster survey, for which robust velocity dispersions and/or initial X-ray fluxes are measured. These observations will allow us to measure cluster temperatures and masses, to rigorously assess the baryon content in an unbiased sample of massive clusters.
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