Abell 168, a Rare Merger with the Simplest Geometry

Details Abell 168, a Rare Merger with the Simplest Geometry Abell 168, a Rare Merger with the Simplest Geometry

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..983m&link_type=abstract

Chandra Proposal ID #03800125

Physics

Chandra Proposal Id #03800125

Scientific paper

Mergers provide a unique laboratory for studying cluster physics. For example, using the gas temperature and density upstream and downstream of a merger shock, one can determine the shock velocity that defines the merger timescale and energetics. If shock fronts are discernible (with the help of Chandra's arcsecond resolution), one can use them to study microscopic properties of the intracluster plasma, including the magnetic field. While many clusters exhibit signs of merging, most have complicated geometries and projections that preclude unambiguous interpretation. We propose to obtain a detailed temperature map of A168 whose image suggests a head-on collision of two similar cool subclusters occurring in the plane of the sky - the simplest possible merger scenario.

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