Universal microwave radiation and extragalactic gamma radiation

Details Universal microwave radiation and extragalactic gamma radiation Universal microwave radiation and extragalactic gamma radiation

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.282...48n&link_type=abstract

Nature, vol. 282, Nov. 1, 1979, p. 48-50.

Other

Extraterrestrial Radiation, Gamma Rays, Microwave Emission, Bremsstrahlung, Compton Effect, Energetic Particles, Energy Spectra, Milky Way Galaxy, Photons, Relativistic Particles, Spiral Galaxies

Scientific paper

The role of the inverse Compton effect (ICE) of relativistic electrons on universal microwave photons for the production of high energy gamma rays from normal spiral galaxies is discussed. The production of high energy gamma rays is compared with those from other electromagnetic processes, such as bremsstrahlung of relativistic electrons. Attention is given to the differential energy spectrum of these electrons and their subsequent source functions. Three evolution models are examined and the effect of bremsstrahlung and ICE on them is considered. It is concluded that the contribution of gamma photons from ICE on microwaves to extragalactic gamma radiation is possibly more important than from local effects in our Galaxy.

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