Gamma rays from cosmic rays in thick targets and application in the galactic 300pc H2 ring

Details Gamma rays from cosmic rays in thick targets and application in the galactic 300pc H2 ring Gamma rays from cosmic rays in thick targets and application in the galactic 300pc H2 ring

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977esasp.124..161w&link_type=abstract

In ESA Recent Advan. in Gamma-Ray Astronomy p 161-165 (SEE N78-11899 02-88)

Astronomy and Astrophysics

Astronomy

Cosmic Rays, Galactic Structure, Gamma Rays, Hydrogen Clouds, Targets, Particle Production, Pions, Protons, Sas-2, Trapped Particles

Scientific paper

The neutral pion-decay gamma-ray emissivity from trapped cosmic rays is calculated in terms of the ratio of proton production rate in the region to that locally, f. The electron contributions depend on the characteristics of the region. A calculation is presented for the galactic center, from which direction SAS-2 observes a high gamma-ray enhancement. The results support a galactic origin for most cosmic rays in the energy range 1 to 10 GeV. The relationships between gas density, magnetic field and f are examined.

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