Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.201..745a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 201, Nov. 1982, p. 745-758.
Astronomy and Astrophysics
Astronomy
16
Cosmic Rays, Gamma Rays, Gas Density, Hydrogen Clouds, Interstellar Gas, Milky Way Galaxy, Density Distribution, Molecular Gases, Radiant Flux Density
Scientific paper
New date on the distribution of molecular hydrogen in the first and second quadrants allow a detailed analysis of the relationship between the column density of gas (in all major forms) and the intensity of cosmic gamma-rays in the Galaxy. It is concluded that most of the features observed in the gamma-ray map can be explained in terms of cosmic-ray interactions with the gas in the ISM, with molecular hydrogen playing an important role. The cosmic-ray intensity in the important production regions appears to be roughly independent of galactocentric distance, R, for l:65-100 deg and to fall off slowly with R for l:100-180 deg.
Arnaud Keith
Brock J. E.
Dame Thomas M.
Pei Li Ti
Riley P. A.
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