Lack of cooling flow clusters at z>0.5

Details Lack of cooling flow clusters at z>0.5 Lack of cooling flow clusters at z>0.5

2006-11-14

arxiv.org/abs/astro-ph/0611438v1

Astronomy and Astrophysics

Astrophysics

6 pages. To appear in the Proceedings of "Heating vs. Cooling in Galaxies and Clusters of Galaxies", August 2006, Garching (Ge

Scientific paper

The goal of this work is to study the incidence rate of "cooling flows" in the high redshift clusters using Chandra observations of z>0.5 objects from a new large, X-ray selected catalog. We find that only a very small fraction of high-z objects have cuspy X-ray brightness profiles, which is a characteristic feature of the cooling flow clusters at z~0. The observed lack of cooling flows is most likely a consequence of a higher rate of major mergers at z>0.5.

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