2005/07/04 by Susumu Inoue, Inoue, Susumu, Felix A. Aharonian +3
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0507068
To appear in the proceedings of "Rencontres de Moriond: Very High Energy Phenomena in the Universe", La Thuile, Italy (March 12-19, 2005)
arxiv created 2005/07/04 · arxiv updated 2009/12/01
Protons can be plausibly accelerated to ∼ 1018-1019 eV in strong accretion shocks surrounding massive clusters of galaxies. Such protons efficiently produce very high energy pairs through interactions with the CMB, which then radiate synchrotron and inverse Compton emission with hard spectra, peaking respectively in hard X-rays and TeV gamma-rays. We discuss the prospects for detecting this emission from nearby clusters with current and future facilities such as HESS and NeXT, which should provide a clear signature of ultra-high energy proton acceleration and an important probe of magnetic fields in the outermost regions of clusters.