Galactic radiation belts

Details Galactic radiation belts Galactic radiation belts

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.282..386l&link_type=abstract

Nature, vol. 282, Nov. 22, 1979, p. 386-388.

Astronomy and Astrophysics

Astronomy

2

Extragalactic Radio Sources, Galactic Radiation, Radiation Belts, Brightness Temperature, Magnetic Dipoles, Radio Astronomy

Scientific paper

The interpretation of extended extragalactic radio sources as belts of trapped electrons circling a parent galaxy as the Van Allen belts circle the earth is examined. Two dimensional brightness distributions on the plane of the sky from synchrotron-emitting relativistic electrons trapped in a dipolar magnetic-field shell are calculated for various aspect and loss cone angles by the numerical integration method of Ortwein at al. (1966), and results corresponding to six electron morphologies are obtained. It is noted that if large loss cones are prevalent, the observed distribution of source morphologies will be equivalent to the results of some data analyses. Distortion to the electron distributions expected in real galaxies are discussed, and speculations concerning the origins of the proposed belts are presented.

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