The dynamics of a distant cluster observed with XMM-Newton
Abstract
The X-ray observatory XMM-Newton with its high quality performances allows to study the hot intracluster medium (ICM) of distant clusters of galaxies with unprecedented accuracy. The ICM density and temperature distribution can be used as a powerful tracer of the dynamical state of clusters of galaxies which is important for structure formation and cosmology. We will present new results of RXJ0256 a distant cluster of galaxies (z=0.36) found in the SHARC catalogue which was observed with XMM-Newton. The cluster shows prominent substructure and is very likely accreting a massive sub group. A detailed analysis of the XMM-Newton data together with optical data allow us to calculate the mass ratio of main cluster and sub group as well as to determine the cluster's merger geometry.
- Publication:
-
35th COSPAR Scientific Assembly
- Pub Date:
- 2004
- Bibcode:
- 2004cosp...35.1834N