Measuring and constraining turbulence in galaxy clusters using XMM-RGS

Details Measuring and constraining turbulence in galaxy clusters using XMM-RGS Measuring and constraining turbulence in galaxy clusters using XMM-RGS

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..162s&link_type=abstract

XMM-Newton Proposal ID #06738302

Astronomy and Astrophysics

Astronomy

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Macs J0242.5-21, Ms 2137.3-2353

Scientific paper

We have demonstrated for the first time the ability of the XMM-Newton RGS instruments to measure or place limits on turbulence in galaxy clusters. We propose to observe five targets chosen to provide excellent limits on turbulence in galaxy clusters. They are bright, have cool cores and are point-like with respect to the XMM-RGS and should have bright narrow emission lines. We expect to obtain limits or measurements between 340-480 km/s (90% uncertainty) in these clusters. These are the best direct limit on turbulence in the intracluster medium we can obtain before the launch of ASTRO-H and IXO. An important secondary objective will be to study AGN feedback in luminous cluster cores. We will be able to determine whether AGN feedback matches cooling to better than 10%.

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