The evolution of supernova remnants. V - Cosmic rays in the dense shell

Details The evolution of supernova remnants. V - Cosmic rays in the dense shell The evolution of supernova remnants. V - Cosmic rays in the dense shell

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213...52c&link_type=abstract

Astrophysical Journal, Part 1, vol. 213, Apr. 1, 1977, p. 52-57.

Astronomy and Astrophysics

Astrophysics

20

Cosmic Rays, Cosmology, Gamma Rays, Relativistic Particles, Supernova Remnants, Betatrons, High Energy Interactions, Magnetic Pumping, Nebulae, Particle Acceleration, Shock Wave Interaction

Scientific paper

The effect of the compression behind a shock wave in an old supernova remnant on ambient cosmic rays is investigated. The energy gained by the particles by the betatron mechanism or magnetic pumping is calculated. Several tenths of 1% of the supernova energy may go into relativistic particles at this time. The total energy of cosmic rays in the shell is probably in the range between 10 to the 48th and 10 to the 49th power ergs. While the relativistic particles are in the dense shell, gamma-rays resulting from pion decay are produced. The gamma-ray structure of old remnants may be similar to their radio structure. The gamma-rays produced by swept-up cosmic rays in the Vela SNR may be near the limit of detectability.

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