Can simulations reproduce the observed temperature-mass relation for clusters of galaxies?

Thomas, P A, Muanwong, O, Kay, S T and Liddle, A R (2002) Can simulations reproduce the observed temperature-mass relation for clusters of galaxies? Monthly Notices of the Royal Astronomical Society, 330 (2). pp. 48-52. ISSN 0035-8711

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Abstract

It has become increasingly apparent that traditional hydrodynamical simulations of galaxy clusters are unable to reproduce the observed properties of galaxy clusters, in particular overpredicting the mass corresponding to a given cluster temperature. Such overestimation may lead to systematic errors in results using galaxy clusters as cosmological probes, such as constraints on the density perturbation normalization 8. In this paper we demonstrate that inclusion of additional gas physics, namely radiative cooling and a possible pre-heating of gas prior to cluster formation, is able to bring the temperature¿mass relation in the innermost parts of clusters into good agreement with recent determinations by Allen, Schmidt & Fabian using Chandra data.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Peter Thomas
Date Deposited: 06 Feb 2012 19:06
Last Modified: 13 Mar 2017 12:22
URI: http://sro.sussex.ac.uk/id/eprint/19277

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