Galactic gamma rays and the cosmic-ray halo problem

Details Galactic gamma rays and the cosmic-ray halo problem Galactic gamma rays and the cosmic-ray halo problem

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977esasp.124..171s&link_type=abstract

In ESA Recent Advan. in Gamma-Ray Astronomy p 171-177 (SEE N78-11899 02-88)

Astronomy and Astrophysics

Astronomy

1

Cosmic Rays, Galactic Radiation, Gamma Rays, Halos, Diffuse Radiation, Interstellar Gas, Radiation Distribution, Radiation Sources, Sas-2, Trapped Particles

Scientific paper

Detailed models of diffused halos of various sizes are considered. In such models, the scale perpendicular to the plane has a strong effect in determining the distribution of cosmic rays. Radial distributions were calculated for cylindrical coordinate models. The implied gamma-ray longitude distributions were then calculated and compared with the SAS-2 data. Assuming the sources to be supernova remnants or pulsars, only cosmic-ray nucleon halo models with an upper limit scale height of about 3 kpc provide a good fit to the gamma ray data. Consideration of the gamma-ray latitude data gives a half thickness of 2 + or - 2 kpc for the cosmic ray electron halo.

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