Deep observation of A2163: studying a new "bullet cluster"

Details Deep observation of A2163: studying a new "bullet cluster" Deep observation of A2163: studying a new "bullet cluster"

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..176b&link_type=abstract

XMM-Newton Proposal ID #06741701

Computer Science

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, A2163

Scientific paper

Exhibiting a clear spatial spatial separation between the gas and dark matter component of a fastly accreted sub-cluster, the bullet cluster , 1E 0657-56, has provided us a unique laboratory to investigate the impact of violent cluster mergers on the Intra-Cluster Medium, galaxies and dark matter properties. In recent analyses of X-ray, optical and weak-lensing data, we show that the massive cluster A2163 also exhibits a crossing gas bullet separated from a galaxy and dark matter over-density, and suggest that both A2163 and 1E 0657-56 share a common merging scenario possibly just differing in the time elapsed after the closest cluster encounters. With this deeper XMM observation of A2163, we propose to refine our knowledge of the dynamics and geometry of the on-going sub-cluster accretion.

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