Core Gas Sloshing in the Double Cluster Abell 1644

Details Core Gas Sloshing in the Double Cluster Abell 1644 Core Gas Sloshing in the Double Cluster Abell 1644

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.124j&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

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Clusters Of Galaxies

Scientific paper

Chandra's unparalleled angular resolution has allowed us to probe deep into the cores of many galaxy clusters, revealing edges in their X-ray surface brightness distributions. These edges may be the result of one cluster halo passing through another (as in A3667 and the ``bullet'' cluster), or AGN blown bubbles in the ICM (as in M87 and Hydra A), or by the core gas sloshing about the cluster potential minimum in response to the gravitational perturbation by the passage of another cluster (as in Ophiuchus and A1644). Here we present a canonical example of this latter process in the double cluster Abell 1644, where not only is the core gas sloshing visible, but the perturbing sub-cluster is as well. We show how observations of core gas sloshing, used in concert with simulations, place constraints on core reheating and the merger history of the cluster.

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