XMM-Newton Proposal 03043202

Details XMM-Newton Proposal 03043202 XMM-Newton Proposal 03043202

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop..152h&link_type=abstract

XMM-Newton Proposal ID #03043202

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, X Comae, X Comae, Xmm-Newton Proposal 03043202

Scientific paper

The existence of a warm-hot intergalactic medium (WHIM) can solve two puzzles: Why galaxy clusters do not follow classical scaling relations and Where are the local baryons observed at high z. Our XMM EPIC observations of the outskirts of the Coma cluster detect the WHIM in emission. Remarkably, a bright AGN is also projected onto the Coma cluster. In AO3 we were granted 300 ks to detect the WHIM in absorption against this AGN, but received only 172 ks of good time. The results of this observation are quite interesting, if at low significance due to the reduced exposure. We detect absobrtion features centered on the Coma z. We here request sufficient time to make up the lost exposure in order to place this detection on a firmer statistical basis.

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