XMM-Newton Proposal 02051902

Details XMM-Newton Proposal 02051902 XMM-Newton Proposal 02051902

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..273i&link_type=abstract

XMM-Newton Proposal ID #02051902

Mathematics

Logic

A1795-Offset1, A1795-Offset2, Xmm-Newton Proposal 02051902

Scientific paper

The temperature profile of the hot gas within clusters of galaxies is a crucial quantity for determining the gravitational mass and baryon fraction of a cluster, as well as a potential discriminant between competing cosmological models. Current observations will determine the temperature profiles out to 40% of the virial radius, yet simulations indicate the temperature should drop steeply at larger radii. We propose to test this important prediction for the first time by observing four nearby, bright clusters with four off-center pointings so we can determine the temperature profile out to 100% of the virial radius. This will represent the largest sample to date for which temperature profiles will be determined to a large fraction of the virial radius.

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