High-energy and ultra-high-energy cosmic rays

Details High-energy and ultra-high-energy cosmic rays High-energy and ultra-high-energy cosmic rays

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...300..474f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 300, Jan. 15, 1986, p. 474-487.

Astronomy and Astrophysics

Astronomy

52

Galactic Cosmic Rays, High Energy Interactions, Anisotropy, Black Holes (Astronomy), Galactic Nuclei, Neutron Stars, Particle Energy, X Ray Sources

Scientific paper

The nature of the source and history of Galactic cosmic rays is examined in the light of new measurements on cosmic rays and related astronomical measurements. The possibility of both a Galactic center source and sources of one type distributed throughout the Galaxy is addressed. The concept of escape first from a Galactic plane trapping region and then from the larger region of the Galaxy as a whole is addressed. Two types of sources are considered, along with the reasons that at least two types appear to be necessary. Among the combinations considered are two distributed Galactic sources, one distributed source type and a Galactic center source, and one distributed source type and an extragalactic source. The constraints are seen to be fairly restrictive, leading to the conclusion that there must be two Galactic source types with quite different characteristics.

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