XMM-Newton observations of the most luminous X-ray cluster RXJ1347.5-1145 and of the complex cluster A514
Abstract
We report on the results of an analysis of XMM-Newton observations of RXJ1347.5-1145 (z=0.451), the most luminous X-ray cluster of galaxies currently known. We discuss several intriguing properties of this exceptional cluster, such as the high luminosity, the presence of a strong cooling flow and evidence for substructures and SZ signal. In particular, by presenting the temperature map we will discuss the puzzling dynamical state of this cluster, which shows evidence for both a subcluster merger and a cooling flow, indicating a complex dynamical evolution. Due to the presence of gravitational arcs, this cluster is also well suited for a comparison of lensing mass and X-ray mass. We compare our results with previous observations from ROSAT, ASCA and Chandra satellites. We also present the first results from the analysis of XMM-Newton observations of another exceptional cluster of galaxies, A514 (z=0.0714). This cluster is characterized by an extremely disturbed X-ray morphology which is a typical signature of an ongoing merger process and we investigate its dynamical state by means of the temperature map. Finally, we discuss the connection between the properties of the intra-cluster gas (mainly density and temperature) and magnetic fields derived from Faraday rotation measures.
- Publication:
-
35th COSPAR Scientific Assembly
- Pub Date:
- 2004
- Bibcode:
- 2004cosp...35.2254G