XMM observation of merging cluster of galaxies Abell 168

Details XMM observation of merging cluster of galaxies Abell 168 XMM observation of merging cluster of galaxies Abell 168

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..161a&link_type=abstract

XMM-Newton Proposal ID #04044102

Statistics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, A168N, A168S, Xmm-Newton Proposal 04044102

Scientific paper

We propose two 45 ksec observations of A168 (z=0.047), a two-component cluster in a merger state in the plane of the sky. The cluster is characterized, as seen by Chandra, by an apparent cold front in the direction of motion in front of one subcluster center. This is contrary to other mergers (e.g. RXJ0658-55) where the cold fronts trail behind the subclusters. It is necessary to produce highly resolved temperature maps in order to categorize these clusters and to understand their formation and infer the history of heating the intra-cluster gas. This is not possible with the existing Chandra data due to limited photon statistics. The analysis of the XMM data will allow for a detailed study of the properties of the cold "tongue" of gas which may solve the riddle of mergers.

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