EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 454/3 Article
Free access article

Issue A&A
Volume 454, Number 3, August II 2006
Page(s) L131 - L134
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20065404



A&A 454, L131-L134 (2006)
DOI: 10.1051/0004-6361:20065404

Letter

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

S. Colafrancesco and F. Giordano

INAF - Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monteporzio, Italy
    e-mail: cola@mporzio.astro.it

(Received 10 April 2006 / Accepted 8 June 2006 )

Abstract
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.


Key words: cosmology: theory -- galaxies: clusters: general -- magnetic field



© ESO 2006


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.