Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.184..283b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 184, Aug. 1978, p. 283-302.
Astronomy and Astrophysics
Astronomy
17
Astronomical Models, Emissivity, Galactic Nuclei, Galactic Radiation, Radio Sources (Astronomy), Synchrotron Radiation, Three Dimensional Models, Cosmic Rays, Disks (Shapes), Galactic Structure, Gamma Rays, Radio Emission
Scientific paper
The model of French and Osborne (1976) giving the distribution of synchrotron emissivity in the galactic plane is developed and extended to three dimensions. To account for the observed distribution over the whole celestial sphere, a 'thick disk' of emission is required. In the preferred model the thickness of this disk decreases towards the galactic center. A comparison of synchrotron and gamma-ray emission from the anticenter direction indicates that the sources of cosmic-ray nuclei and electrons must be different. The 'closed galaxy' model of Peters and Westergaard (1977) has great difficulty in accounting for the general level of synchrotron emissivity in the Galaxy.
Brindle Christopher
French D. K.
Osborne John L.
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