Cosmic Rays and Gamma Radiation from Clusters of Galaxies

Details Cosmic Rays and Gamma Radiation from Clusters of Galaxies Cosmic Rays and Gamma Radiation from Clusters of Galaxies

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..745...60b&link_type=abstract

HIGH ENERGY GAMMA-RAY ASTRONOMY: 2nd International Symposium on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astronomy

Galaxy Clusters, Cosmic Rays, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

Clusters of galaxies are storage rooms of cosmic rays. They confine the hadronic component of cosmic rays over cosmological time scales due to diffusion, and the electron component due to energy losses. Gamma radiation can result from either the decay of neutral pions generated in cosmic ray inelastic collisions with the intracluster gas, or from inverse Compton scattering of high energy electrons. We review here some of the arguments that led to this conclusion, as well as the elements of further development in this field, with particular attention for the processes of particle acceleration at work during the formation of the large scale structure of the Universe.

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