Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1123...51c&link_type=abstract
COSMIC RAYS AND ASTROPHYSICS: Proceedings of the 3rd School on Cosmic Rays and Astrophysics. AIP Conference Proceedings, Volume
Astronomy and Astrophysics
Astrophysics
Cosmic Rays, Elementary Particle Processes, Supernova Remnants
Scientific paper
The objective of this paper is to provide a brief overview of selected experimental measurements in the field of cosmic rays. Galactic cosmic rays are composed of primary and secondary particles. Primary cosmic rays are thought to be energized by supernova shocks within our Galaxy. The cosmic rays that eventually arrive at the Earth are mainly protons and atomic nuclei, but also contain electrons. Secondary cosmic rays are produced in collisions of primary particles with the diffuse interstellar gas and are scarce but carry important information on the Galactic propagation of the primary particles. The secondary component includes a small fraction of antimatter particles, antiprotons and positrons; these may also come from unusual sources and could possibly provide a window into new physics. For example, in the Galactic halo there could take place annihilations of heavy supersymmetric dark matter particles, which could lead to positrons or antiprotons.
Cabezas Denis
Coutu Stephane
Salinas J. Solano C.
Xoxocotzi Reyna
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