Shock heating and particle acceleration by the supersonic merger in Abell 3128

Details Shock heating and particle acceleration by the supersonic merger in Abell 3128 Shock heating and particle acceleration by the supersonic merger in Abell 3128

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop....5k&link_type=abstract

XMM-Newton Proposal ID #04001302

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, A 3128, A 3128, Xmm-Newton Proposal 04001302

Scientific paper

We propose to observe the merging cluster A 3128 in the Horologium-Reticulum supercluster using a total exposure time of 100 ks. A 3128 has two X-ray cores. Optical observations indicate that one core is moving at Mach number M~6 through the cluster. This high velocity causes shocks, which heat the plasma and give rise to particle acceleration, which in turn can produce non-thermal emission. The high Mach number makes A 3128 one of the best targets to investigate shocks created by supersonic infall velocities in clusters of galaxies and to look for non-thermal emission. The superior effective area, spectral resolution and sensitivity make XMM-Newton an ideal instrument to look for the non-thermal emission and study the merger by mapping the temperature, density and metallicity distribution in the cluster.

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