The acceleration of cosmic rays in supernova explosions

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cosmic Rays, Electron Acceleration, Radio Sources (Astronomy), Relativistic Electron Beams, Stellar Radiation, Supernova Remnants, Cosmic Plasma, Magnetic Dipoles, Pulsars, Shock Fronts, Stellar Evolution, Stellar Magnetic Fields

Scientific paper

It is shown that the radio emissions of supernova remnants older than about 100 years can be explained by relativistic electrons accelerated to a stage of approximately 100 years. A model is proposed in which the acceleration occurs at the front of a shock wave, as well as through the action of the magnetic-dipole radiation of a pulsar. A possible explanation is given for the absence of radio emissions in supernova remnants younger than approximately 30 years.

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