Gamma Ray Bursts, Supernovae, and Cosmic Ray Origin

Details Gamma Ray Bursts, Supernovae, and Cosmic Ray Origin Gamma Ray Bursts, Supernovae, and Cosmic Ray Origin

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rac..conf..189d&link_type=abstract

RELATIVISTIC ASTROPHYSICS AND COSMOLOGY. Proceedings of the 13th Course of the International School of Cosmic Ray Astrophysics.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Progress in the solution of the mystery of gamma ray bursts (GRBs) is leading to the solution of the mystery of cosmic ray origin. Successes and difficulties with the hypothesis that cosmic rays originate from galactic supernovae (SNe) are outlined. In particular, SNe satisfy power requirements, and first-order shock acceleration in supernova remnant (SNR) shocks explains the power-law spectrum of cosmic rays below the knee. The lack of detection of the π0 bump and weakness of hadronic TeV emission from SNRs suggests, however, that cosmic rays are accelerated by a rare type of supernova. Statistical arguments show that the average kinetic power of GRBs and clean and dirty fireballs into an L* galaxy like the Milky Way is at the level of 1040 ergs s-1, with ~ 1 event every 103-104 years. This power and rate is sufficient to explain the origin of hadronic cosmic rays observed locally. The rare SNe that give rise to GRBs are proposed to be those which accelerate cosmic rays.

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