Combining semianalytic models with simulations of galaxy clusters: The need for heating from active galactic nuclei

Short, C J and Thomas, P A (2009) Combining semianalytic models with simulations of galaxy clusters: The need for heating from active galactic nuclei. Astrophysical Journal, 704 (2). pp. 915-929. ISSN 0004637X

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Abstract

We present hydrodynamical N-body simulations of clusters of galaxies with feedback taken from semianalytic models of galaxy formation. The advantage of this technique is that the source of feedback in our simulations is a population of galaxies that closely resembles that found in the real universe. We demonstrate that, to achieve the high entropy levels found in clusters, active galactic nuclei must inject a large fraction of their energy into the intergalactic/intracluster media throughout the growth period of the central black hole. These simulations reinforce the argument of Bower et al., who arrived at the same conclusion on the basis of purely semianalytic reasoning.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Chris Short
Date Deposited: 06 Feb 2012 19:08
Last Modified: 07 Mar 2017 08:22
URI: http://sro.sussex.ac.uk/id/eprint/19388

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