Constraining Dark Matter with Merging Galaxy Clusters

Details Constraining Dark Matter with Merging Galaxy Clusters Constraining Dark Matter with Merging Galaxy Clusters

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..131a&link_type=abstract

XMM-Newton Proposal ID #05034902

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Macsj0025.4-122, Macsj2243.3-093, Xmm-Newton Proposal 05034902

Scientific paper

We propose to observe two extraordinary, high-redshift galaxy clusters from the Massive Cluster Survey (MACS). These targets have been selected as two of the best examples of major mergers in the MACS catalogue, with clear evidence for considerable offset between the hot X-ray emitting gas and optically luminous stellar material. Subaru and Hubble Space Telescope optical data for these systems have been gathered by us and will be used to carry out gravitational lensing reconstructions of the total cluster masses. XMM X-ray data will be used to probe the mass distribution of hot, baryonic gas, and produce detailed maps of its thermodynamic state. The combination of these two mass measurements will be used to constrain the properties of dark matter in these objects.

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