Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.182..751s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 182, Mar. 1978, p. 751-760.
Astronomy and Astrophysics
Astronomy
39
Bremsstrahlung, Cosmic Rays, Electron Flux Density, Galactic Radiation, Gamma Rays, Synchrotron Radiation, Gradients, Pions, Proton Flux Density, Radiant Flux Density, X Ray Spectra
Scientific paper
Recent measurements of cosmic gamma rays above 35 MeV give spectral shapes which indicate unexpectedly high fluxes of primary electrons in the cosmic ray flux in the producing regions. Coupled with the well known difficulty in explaining the observed flux of galactic synchrotron emission in terms of the local electron spectrum and likely magnetic fields in the Galaxy, the gamma-ray data indicate that the electron/proton ratio in cosmic rays is probably much higher on average in the Galaxy than in the usual estimate for the solar vicinity. Consistency with the absolute gamma-ray intensities requires a simultaneous increase in electron flux and decrease in proton flux relative to solar values in directions away from the Galactic Center, together with spatial variability.
Bennett Kevin
Strong Andrew W.
Wills R. D.
Wolfendale Arnold W.
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