XMM observation of AS1063, one of the most luminous clusters known

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Groups Of Galaxies, Clusters Of Galaxies, Supercluster, As1063, Xmm-Newton Proposal 05046301

Scientific paper

We propose a 45 ksec observation of Abell S1063 (z=0.3475), the second most X-ray luminous cluster in the ROSAT-ESO Flux Limited X-ray (REFLEX) galaxy cluster survey and maybe one of the most massive clusters known. Chandra data imply strong centroid variation with the core being clearly offset. The very high luminosity L_44=30 and high temperaure T=11 keV imply that this cluster is boosted by merger effects. If this is true for AS1063 we should see a stark temperature structure perhaps similar to that of the ``bullet cluster RXJ0658-55. It is necessary to produce highly resolved temperature maps in order to categorize these clusters and to understand their formation and this is not possible with the existing Chandra data.

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