Cosmic-ray electrons in the galactic radio halo

Details Cosmic-ray electrons in the galactic radio halo Cosmic-ray electrons in the galactic radio halo

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..44..255b&link_type=abstract

Astrophysics and Space Science, vol. 44, Oct. 1976, p. 255-266. Translation.

Astronomy and Astrophysics

Astrophysics

17

Cosmic Rays, Electron Diffusion, Electron Radiation, Galactic Radiation, Halos, Emission Spectra, Energy Spectra, Galactic Structure, Interstellar Magnetic Fields, Radioactive Decay

Scientific paper

Previous studies of the cosmic-ray electron component in connection with the possible existence of a galactic radio halo are reviewed. The existence of an extended radio halo with a bulk luminosity close to that of the disk is deduced by analyzing the galactic cosmic-ray electron energy spectrum. Diffusion of the electrons through the galactic magnetic fields is taken into account along with their synchrotron and Compton energy losses. The dependence of halo-emission spectral index on observation direction is also examined. It is noted that results obtained from radio data concerning an extended halo of relatively long-lived cosmic rays do not contradict cosmic-ray age data obtained by observing the intensity of radioactive nuclei.

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