Dark Matter in the Core of the Relaxed Cluster A2589

Details Dark Matter in the Core of the Relaxed Cluster A2589 Dark Matter in the Core of the Relaxed Cluster A2589

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.2028b&link_type=abstract

Chandra Proposal ID #07800452

Physics

Chandra Proposal Id #07800452

Scientific paper

The centers of dark matter halos provide a unique venue for elucidating fundamental characteristics of the dark matter particles and the role that baryons play in shaping the dark matter profile. A2589 is an ideal target for X-ray studies of its DM because it is bright, nearby, and has an exceptionally smooth relaxed X-ray morphology down to its center as revealed by the 8.7 ks AO3 Chandra image. We propose a deep (80 ks) ACIS-S exposure to determine accurately the radial density profile of DM down to 0.005 r_vir. Since clusters with highly relaxed cores are so rare, the high-quality Chandra observation of the core dark matter profile of A2589 we propose will provide a critical benchmark for models of structure formation on cluster scales.

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