Astronomy and Astrophysics – Astronomy
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3071...31s&link_type=abstract
In its The Energetic Gamma-Ray Experiment Telescope (EGRET) Science Symposium p 31-41 (SEE N90-23294 16-90)
Astronomy and Astrophysics
Astronomy
Astronomical Models, Cosmic Rays, Diffuse Radiation, Galaxies, Gamma Rays, Atoms, Gamma Ray Telescopes, Hydrogen, Interstellar Gas, Molecular Gases, Sas-2, Spatial Distribution
Scientific paper
The galaxy was observed to be a source of high energy gamma rays as shown by the two successful satellite experiments, SAS-2 and COS-B. It is generally understood that these diffuse gamma rays result from interactions between energetic cosmic rays and interstellar gas. This work makes use of the most recent data on the distribution of atomic and molecular hydrogen in the galaxy along with new estimates of gamma ray production functions to model the diffuse galactic gamma ray emission. The model allows various spatial distributions for cosmic rays in the Galaxy including non-axisymmetric ones. In the light of the expected data from EGRET (Energetic Gamma-Ray Experiment Telescope), an improved model of cosmic ray-matter-gamma ray interaction will provide new insights into the distribution of cosmic rays and the strength of its coupling to matter.
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