Cooling Flows Without Central Radio Sources?

Details Cooling Flows Without Central Radio Sources? Cooling Flows Without Central Radio Sources?

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..689s&link_type=abstract

Chandra Proposal ID #02800388

Physics

Chandra Proposal Id #02800388

Scientific paper

We propose to obtain a high spatial resolution temperature map of the massive cooling flow cluster (CF) Abell 644 to determine the distribution of hot and cool gas. In several (e.g. Hydra A), and perhaps in most, CFs some heating source is in quasi-equilibrium with the cooling, producing the observed high-density core to the intracluster medium (ICM). Cosmic ray heating of the ICM by radio galaxies is the likely source, since almost all CFs contain radio galaxies. But, if so, what are the physical conditions in the cores of CFs without luminous radio galaxies? Shocks indicating a merger as in A2142? Or a confirmation of a massive CF? A644 is the only nearby cluster which has an apparent massive (dot{M}>300M_{&sun;}yr(-1) ) CF but no radio galaxy.

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