Gamma-ray lines produced by low-energy cosmic rays in SN 1987A

Details Gamma-ray lines produced by low-energy cosmic rays in SN 1987A Gamma-ray lines produced by low-energy cosmic rays in SN 1987A

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340..950e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 340, May 15, 1989, p. 950-954.

Astronomy and Astrophysics

Astronomy

Cosmic Rays, Gamma Ray Astronomy, Gamma Ray Spectra, Supernova 1987A, Cosmic X Rays, Emission Spectra, Iron Isotopes, Particle Acceleration, Pulsars, Radioactive Isotopes

Scientific paper

The Fe-56 nuclei excited by the inelastic collision of protons with the energy of around 10 MeV emit gamma rays in the same nuclear gamma-ray lines as those from the radioactive decay of Co-56. Since a very young supernova remnant like SN 1987A is most likely to accelerate cosmic rays by the shock and a possible pulsar embedded in the ejecta, this process may account for the gamma-ray lines observed from SN 1987A. The conditions required to explain the observed flux of the gamma-ray lines were investigated. It was found that this jet having a large fraction of the total kinetic energy of the supernova explosion.

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