Non-linear shock acceleration and high energy gamma rays from clusters of galaxies
Astrophysics
2009-11-10 v1
Abstract
Merger and accretion shocks in clusters of galaxies can accelerate particles via first order Fermi process. Since this mechanism is believed to be intrinsically efficient, shocks are expected to be modified by the backreaction of the accelerated particles. Such a modification might induce appreciable effects on the non--thermal emission from clusters and a suppression of the heating of the gas at strong shocks. Here we consider in particular the gamma ray emission and we discuss the capability of Cherenkov telescopes such as HESS to detect clusters at TeV energies.
Keywords
Cite
@article{arxiv.astro-ph/0411028,
title = {Non-linear shock acceleration and high energy gamma rays from clusters of galaxies},
author = {Stefano Gabici and Pasquale Blasi},
journal= {arXiv preprint arXiv:astro-ph/0411028},
year = {2009}
}
Comments
6 pages, to appear in the proceedings of the Gamma 2004 Symposium on High Energy Gamma Ray Astronomy, Heidelberg, July 2004 (AIP Proceedings Series)