On the high-energy gamma-ray signature of cosmic-ray sources

Details On the high-energy gamma-ray signature of cosmic-ray sources On the high-energy gamma-ray signature of cosmic-ray sources

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334..722o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. 722-733.

Astronomy and Astrophysics

Astronomy

13

Cosmic Rays, Gamma Ray Astronomy, Particle Acceleration, Shock Wave Propagation, Energetic Particles, Milky Way Galaxy, Monte Carlo Method, Spectrum Analysis, Supernovae

Scientific paper

Monte Carlo simulations of the gamma-ray emission from hypothetical cosmic-ray sources are performed. Sources which might correspond to acceleration by supernova shocks in 'average' interstellar conditions and deep within giant molecular clouds are considered. The consequences of dropping the common assumption that the cosmic-ray spectrum at the sources is the same as that observed at earth are examined. Spectral effects which can be related to the depth of the material shroud and the population of accelerated particles are explored using these simulations and are described. The results are compared with the COS B catalog of gamma-ray sources, and the implications for the underlying particle populations and source mechanisms are discussed.

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