A2440 : Compact Merger just before Collapse

Details A2440 : Compact Merger just before Collapse A2440 : Compact Merger just before Collapse

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...74s&link_type=abstract

XMM-Newton Proposal ID #04019201

Other

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, A 2440, Xmm-Newton Proposal 04019201

Scientific paper

The physics of the compression wave forming at the beginning of major cluster mergers is still not fully understood because of the lack of X-ray observations of equal mass merging clusters close enough but before the first maximum core collapse. We propose to observe with XMM-Newton a carefully selected cluster displaying the densest bi-modal distribution in the optical and X-ray. These data and parallel optical observations will allow, in conjunction with two others already observed bi-modal clusters, for the first time to directly determine the physical conditions (such as density, temperature, gas mixing) in the compressed hot gas and the interplay of the compression waves with the star formation rates of the galaxies.

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