Self-Interacting Dark Matter and the Structure of Galaxy Clusters

Details Self-Interacting Dark Matter and the Structure of Galaxy Clusters Self-Interacting Dark Matter and the Structure of Galaxy Clusters

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprj11009a&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The structure of dark matter halos holds clues to the identity of the constituent dark matter particles. For example, if the particle species is self-interacting (Spergel and Steinhardt 2000), energy exchange between particles will alter the distribution of dark matter on scales that can be probed with the current generation of X-ray telescopes. We have assembled a sample of galaxy clusters from the archive of the Chandra X-ray Observatory. Using the deprojection and modelling techniques described in Arabadjis, Bautz, and Garmire (2002), we calculate several structural parameters for each each cluster and compare them to the results of recent large-scale structure simulations to constrain the dark matter self-interaction cross section.

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