Gamma rays from giant molecular clouds

Details Gamma rays from giant molecular clouds Gamma rays from giant molecular clouds

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3071...43h&link_type=abstract

In its The Energetic Gamma-Ray Experiment Telescope (EGRET) Science Symposium p 43-50 (SEE N90-23294 16-90)

Other

Astronomical Models, Cosmic Rays, Flux Density, Gamma Rays, Irradiation, Molecular Clouds, Energy Spectra, Gamma Ray Observatory, Gamma Ray Telescopes, Hydrogen, Magnetic Fields, Molecules

Scientific paper

Giant Molecular Clouds (GMCs) are massive, bounded, cool, dense regions containing mostly H2, but also H I, CO, and other molecules. These clouds occupy less than 1 percent of the galactic volume, but are a substantial part of the interstellar mass. They are irradiated by the high energy cosmic rays which are possibly modulated by the matter and magnetic fields within the clouds. The product of cosmic-ray flux and matter density is traced by the emission of high energy gamma-rays. A spherical cloud model is considered and the gamma ray flux from several GMCs within 1 kpc of the sun which should be detectable by the EGRET (Energetic Gamma-Ray Experimental Telescope) instrument on GRO (Gamma Ray Observatory).

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