Astronomy and Astrophysics – Astronomy
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...215..399b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 215, no. 2, May 1989, p. 399-408.
Astronomy and Astrophysics
Astronomy
8
Cosmic X Rays, Gamma Ray Astronomy, Neutrinos, Shock Wave Propagation, Stellar Envelopes, Supernovae, Density Distribution, Milky Way Galaxy, Particle Acceleration, Radio Emission, Velocity Distribution
Scientific paper
The generation of gamma, neutrino, and X-ray radiation produced by the protons accelerated at shock fronts in young SN II envelopes, is considered. The shocked gas is known to form a shell limited by the inner and outer shock fronts. The accelerated particles are shown to be confined within the same region. The considered radiations result from pp-interactions inside the shell through production and decay of pions. A lower limit of the X-ray flux provided by secondary electrons and shock heated gas is estimated. The fluxes of gamma-ray, neutrino, and X-ray radiations expected from a SN II in the Galaxy are shown to be detectable. The signature of the considered mechanism is an early production of the signal (t off about 10-100 days), whereas the radiations produced inside the envelope are emitted when transparency sets in.
Berezinskii V. S.
Ptuskin Vladimir S.
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