The impact of magnetic field on the cluster M-T relation

Details The impact of magnetic field on the cluster M-T relation The impact of magnetic field on the cluster M-T relation

2007-01-30

arxiv.org/abs/astro-ph/0701852v1

A&A 454, L131-L134 (2006)

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, published in A&A Letters, references updated, details added in the text and in the Appendix

Scientific paper

10.1051/0004-6361:20065404

We discuss the impact of magnetic field on the mass - temperature relation for groups and clusters of galaxies based on the derivation of the general Magnetic Virial Theorem. The presence of a magnetic field B yields a decrease of the virial temperature T for a fixed mass M: such a decrease in T is stronger for low-mass systems than for high-mass systems. We outline several implications of the presence of B-field and of its mass scaling for the structure and evolution of groups and clusters.

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