Astronomy and Astrophysics – Astronomy
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134...13f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 1, May 1984, p. 13-23.
Astronomy and Astrophysics
Astronomy
50
Cosmic Rays, Diffuse Radiation, Galactic Radiation, Gamma Ray Astronomy, Cos-B Satellite, Energy Spectra, Galactic Structure, Milky Way Galaxy, Radiation Distribution, Spaceborne Astronomy
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). Previously announced in STAR as N84-18151
Fichtel Carl E.
Kniffen Donald A.
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