The relevance of molecular observations to gamma-ray astronomy

Details The relevance of molecular observations to gamma-ray astronomy The relevance of molecular observations to gamma-ray astronomy

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ssrv...36...41h&link_type=abstract

(International Astronomical Union, Meeting on Galactic Astrophysics and Gamma-Ray Astronomy, Patras, Greece, Aug. 19, 1982) Spac

Astronomy and Astrophysics

Astronomy

3

Cosmic Rays, Gamma Ray Astronomy, Interstellar Matter, Ion Production Rates, Molecular Clouds, Particle Interactions, Interstellar Chemistry, Particle Acceleration, Particle Energy, Supernova Remnants

Scientific paper

The interaction of cosmic rays with interstellar clouds may produce some of the observed gamma-ray sources. The use of molecular observations to estimate the cloud masses, which are used to derive cosmic-ray fluxes, is reviewed. Molecular diagnostics of high cosmic-ray ionization rates are discussed, and a detailed application of those diagnostics is summarised and presented as evidence that second-order Fermi acceleration is important in old supernova remnants and can produce cosmic rays of too low energy to induce gamma-ray emission.

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