Particle acceleration in galaxy clusters via MHD turbulence

Details Particle acceleration in galaxy clusters via MHD turbulence Particle acceleration in galaxy clusters via MHD turbulence

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..615b&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.615-618

Astronomy and Astrophysics

Astronomy

8

Acceleration Of Particles, Turbulence, Radiation Mechanisms: Non-Thermal -Galaxies: Clusters: General

Scientific paper

Synchrotron emission extended on Mpc scales is detected in a number of massive galaxy clusters. The hot ICM becomes a collisionless-turbulent plasma on scales below 10-50 kpc and thus turbulence may accelerate the relativistic particles radiating in these sources. In this paper the injection, cascading and dissipation of hydro and MHD turbulence in galaxy clusters are briefly discussed. We also discuss the two most relevant mechanisms for stochastic particle acceleration produced by MHD turbulence in galaxy clusters, namely Alfvénic acceleration and Transit Time Damping acceleration from fast modes.

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