Chandra Observation of the Core of Abell 576

Details Chandra Observation of the Core of Abell 576 Chandra Observation of the Core of Abell 576

2003-10-09

arxiv.org/abs/astro-ph/0310265v1

Astronomy and Astrophysics

Astrophysics

3 pages, 5 figures (2 color), to appear in "The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies," held in Charlot

Scientific paper

We present data from a Chandra observation of the nearby cluster of galaxies Abell 576. The core of the cluster shows a significant departure from dynamical equilibrium. We show that this core gas is most likely the remnant of a merging subcluster, which has been stripped of much of its gas, depositing a stream of gas behind it in the main cluster. The unstripped remnant of the subcluster is characterized by a different temperature, density and metalicity than that of the surrounding main cluster, suggesting its distinct origin. Continual dissipation of the kinetic energy of this minor merger may be sufficient to counteract most cooling in the main cluster over the lifetime of the merger event.

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