The gamma-ray colour of the Milky Way and the cosmic-ray electron density

Details The gamma-ray colour of the Milky Way and the cosmic-ray electron density The gamma-ray colour of the Milky Way and the cosmic-ray electron density

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202.1049m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Mar. 1983, p. 1049-1057.

Astronomy and Astrophysics

Astronomy

Cosmic Rays, Electron Density (Concentration), Galactic Radiation, Gamma Ray Astronomy, Milky Way Galaxy, Bremsstrahlung, Cos-B Satellite

Scientific paper

The γ-ray colour of the Milky Way, derived from COS-B observations, gives a simple and useful tool in order to investigate the origin of this high energy radiation. It is possible to show that the observed colour implies an enhanced bremsstrahlung emission from low energy cosmic-ray electrons and a density of these particles in the interstellar space higher than that estimated from measurements at Earth. This result still holds when the point source contribution to the galactic γ-ray emission is also taken into account, unless one admits that the integrated spectrum from unresolved sources is very steep.

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