Volume 369, Number 1, April I 2001
|Page(s)||36 - 41|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 April 2001|
The temperature-mass relation in magnetized galaxy clusters
Max-Planck-Institut für Astrophysik, PO Box 1317, 85741 Garching, Germany
2 Dept. of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA
Corresponding author: K. Dolag, firstname.lastname@example.org
Accepted: 9 January 2001
We use cosmological, magneto-hydrodynamic simulations of galaxy clusters to quantify the dynamical importance of magnetic fields in these clusters. The set-up of initial magnetic field strengths at high redshifts is chosen such that observed Faraday-rotation measurements in low-redshift clusters are well reproduced in the simulations. We compute the radial profiles of the intracluster gas temperature and of the thermal and magnetic pressure in a set of clusters simulated in the framework of an Einstein-de Sitter and a low-density, spatially-flat CDM cosmological model. We find that, for a realistic range of initial magnetic field strengths, the temperature of the intracluster gas changes by less than ≈5%
Key words: magnetic fields, galaxies: clusters: general
© ESO, 2001
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