a Search for Fossils of Feedback in Three - and Optically-Quiet Cooling Flows

Details a Search for Fossils of Feedback in Three - and Optically-Quiet Cooling Flows a Search for Fossils of Feedback in Three - and Optically-Quiet Cooling Flows

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1307d&link_type=abstract

Chandra Proposal ID #04800327

Physics

Chandra Proposal Id #04800327

Scientific paper

In order to isolate the effects of feedback from radio sources and star formation in cluster coooling flows, we have identified a sample of 5 cooling flow clusters with high inferred cooling rates which do not show evidence for a powerful radio source nor optical emission line nebulae, which are commonly present in such systems. We propose to observe 3 of these clusters with ACIS-S to re-derive improved cooling rates, density distributions, and temperature profiles, and to look for evidence of previous feedback in the form of ``ghost cavities''. Identifying the characteristics these clusters share and do not share with the more common variety of cooling flows (of which there are at least 19 archived examples) is key to solving the ``cooling flow'' problem.

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