Photons and Antimatter in Space

Details Photons and Antimatter in Space Photons and Antimatter in Space

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005naap.conf..165b&link_type=abstract

NON-ACCELERATOR ASTROPARTICLE PHYSICS. Proceedings of the 7th School. Held 26 July-6 August 2004 in ICTP, Trieste, Italy. Edited

Physics

Scientific paper

The existence of antimatter has been predicted by Dirac in 1928. Only 4 years later Anderson confirmed experimentally the anti-electron (positron) production. Antimatter is present in our Galaxy in a very little percentage. Indirect evidence collected by high energy photon experiments disfavours large amount of antimatter in the Universe. The present interest on space experiments for antimatter is focused on understanding several aspects of cosmic-ray physics and possible signals of dark matter annihilation on ordinary matter and antimatter. High energy gamma-ray astrophysics is essential to understand galactic and extragalactic sources emitting through non-thermal mechanisms.

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