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Shock acceleration and gamma radiation in the intracluster medium

Stefano Gabici
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Abstract

Particle acceleration is expected to take place at shocks that form during the process of large scale structure formation. Electrons accelerated at such shocks can upscatter a small fraction of the photons in the cosmic microwave background up to the gamma ray band. Here we make predictions about the detectability of the $γ$--ray emission from forming clusters of galaxies with future GeV and TeV gamma ray telescopes. We also estimate the contribution of these sources to the extragalactic diffuse gamma ray background.

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Stefano Gabici. 2004-01-08. Shock acceleration and gamma radiation in the intracluster medium. https://arxiv.org/abs/astro-ph/0401110

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