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MHD simulations of cool core clusters

Published online by Cambridge University Press:  01 November 2008

Frederico Stasyszyn  and
Klaus Dolag
Frederico Stasyszyn
Affiliation:
MPI for Astrophysics, Karl-Schwarzchild-Str. 1, D-85741 Garching, Germany e-mail: fstasys@mpa-garching.mpg.de
Klaus Dolag
Affiliation:
MPI for Astrophysics, Karl-Schwarzchild-Str. 1, D-85741 Garching, Germany e-mail: fstasys@mpa-garching.mpg.de
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Abstract

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Using Smoothed Particle Magneto Hydrodynamics (Dolag & Stasyszyn), we study the effects of magnetic fields in galaxy clusters with the aim to infer their dynamical role within the cool core region. Therefore we we investigate the role of regularization as well as divergence cleaning schemes (Stasyszyn & Dolag 2009). We run cosmological simulations of a reference cluster in order to evaluate our various implementation in a realistic scenario. The preliminary results indicate that the final magnetic field profile in the simulations depends only on the amount of artificial dissipation, but not in the amount of numerical div(B) present in the different implementation. We also present first results from simulations which are including radiative cooling and star formation. Even at the this low resolution we find a strong additional amplification of the magnetic field within the cool core region indicating that magnetic pressure could become comparable to the thermal pressure in theses regimes.

Keywords

MHD – methods: n-body simulations – galaxies: clusters – galaxies: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 565 - 566
Copyright
Copyright © International Astronomical Union 2009

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