Do supernova remnants provide the cosmic-ray electrons

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cosmic Rays, Electron Flux Density, High Energy Electrons, Relativistic Particles, Supernova Remnants, Synchrotron Radiation, Background Radiation, Galactic Radiation, Microwave Emission, Milky Way Galaxy, Monochromatic Radiation, Radiant Flux Density, Radio Astronomy, Stellar Evolution, Stellar Radiation

Scientific paper

Analysis of recently improved parameters of the radio structure and evolution of supernova remnants (SNRs) has allowed us to determine the total radio luminosity of the relativistic electrons from all the SNRs in the Galaxy. Although the results are uncertain to within a factor of almost 10, the radio luminosity of all the electrons which have escaped from the old SNRs appears to be equal to that of the general galactic background. This suggests that the SNRs provide the cosmic-ray electrons in the Galaxy.

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