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Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8418151f&link_type=abstract
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Cosmic Rays, Diffuse Radiation, Galactic Radiation, Gamma Rays, Bremsstrahlung, Compton Effect, Cos-B Satellite, Flux Density, Hydrogen, Interstellar Matter, Nucleon-Nucleon Interactions, Particle Interactions, Photons, Proton Flux Density
Scientific paper
The observed diffuse galactic gamma radiation is compared to that predicted from galactic cosmic ray interactions with galactic matter and photons, assuming that on a broad scale the galactic cosmic rays in the plane are correlated with matter density. Recent considerations of the galactic diffuse matter distribution, particularly the molecular hydrogen, the galactic photon density, and a revised cosmic ray galactic scale height, are included. The predictions are compared to the observational gamma ray longitude distributions, the latitude distribution, and energy spectrum, including the COS-B satellite results, and the COS-B background estimate. Considering the uncertainties, the agreement between the theoretical predictions and the gamma ray data seems generally reasonable, suggesting that the general concepts are likely to be correct. Both the results determined here alone and in conjunction with other work calculating source functions assuming only cosmic ray matter contributions indicate no necessity for a significant point source contribution to the diffuse gamma radiation in the energy range being considered (E(gamma)10 MeV).
Fichtel Carl E.
Kniffen Donald A.
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