Gamma ray emission and stochastic particle acceleration in galaxy clusters

G. Brunetti, P. Blasi, R. Cassano, S. Gabici
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引用次数: 5

Abstract

FERMI (formely GLAST) will shortly provide crucial information on relativistic particles in galaxy clusters. We discuss non thermal emission in the context of general calculations in which relativistic particles (protons and secondary electrons due to proton‐proton collisions) interact with MHD turbulence generated in the cluster volume during cluster mergers. Diffuse cluster‐scale radio emission (Radio Halos) and hard X‐rays are produced during massive mergers while gamma ray emission, at some level, is expected to be common in galaxy clusters.
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星系团中的伽马射线发射和随机粒子加速
费米望远镜不久将提供星系团中相对论性粒子的重要信息。我们在一般计算的背景下讨论非热辐射,其中相对论粒子(质子和由于质子-质子碰撞而产生的次级电子)与团簇合并过程中团簇体积中产生的MHD湍流相互作用。漫射星系团规模的射电发射(射电晕)和硬X射线是在大规模合并期间产生的,而伽马射线的发射,在某种程度上,预计在星系团中是常见的。
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