Interpretations of the galactic gamma ray distribution

Details Interpretations of the galactic gamma ray distribution Interpretations of the galactic gamma ray distribution

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974csgr.conf..221d&link_type=abstract

In ESRO The Context and Status of Gamma Ray Astronomy p 221-227 (SEE N75-25813 16-93)

Astronomy and Astrophysics

Astronomy

1

Cosmic Rays, Galactic Radiation, Gamma Rays, Radiation Distribution, Radiation Sources, Compton Effect, Emission Spectra, Flux Density, Gas Density, Hydrogen Clouds, Interstellar Gas, Radio Emission

Scientific paper

The distribution of gamma ray emissivity in the galaxy is discussed. The interpretations of this distribution involving, alternatively, the enhancement of cosmic ray fluxes towards the galactic center and the presence of high gas densities are examined. High cosmic ray fluxes, or high molecular hydrogen densities in the region 4 to 6 kpc from the galactic center may be responsible for the observed distribution of galactic gamma rays. Most of the proposed mechanisms for increased cosmic ray fluxes appear to conflict with radio data, and explanation in terms of high gas densities is considered. An estimate of the expected inverse Compton contribution to the gamma ray flux is made.

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