Production spectrum of gamma rays in interstellar space through neutral pion decay

Details Production spectrum of gamma rays in interstellar space through neutral pion decay Production spectrum of gamma rays in interstellar space through neutral pion decay

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..76..213s&link_type=abstract

Astrophysics and Space Science, vol. 76, no. 1, May 1981, p. 213-233.

Astronomy and Astrophysics

Astronomy

107

Cosmic Rays, Gamma Ray Astronomy, Interstellar Gas, Particle Production, Pions, Proton-Proton Reactions, Bremsstrahlung, Galaxies, Gamma Ray Spectra, Radio Spectra, Radioactive Decay

Scientific paper

A simple representation is obtained of the observed invariant cross section for the production of neutral pions in proton-proton collisions. Using this representation, the differential and integral production spectra of gamma rays in the galaxy are calculated from interactions of cosmic ray nuclei with interstellar gas. It is shown that the uncertainties in deducing interstellar proton spectrum by demodulating the observed spectrum have only a limited effect on the gamma ray spectrum. Also determined is the gamma ray production spectrum through bremsstrahlung process for a typical interstellar electron spectrum derived from the radio spectrum in the galaxy.

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