Physics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc....2..238c&link_type=abstract
Presented at the 18th Intern. Cosmic Ray Conf., Bangalore, India, 22 Aug. - 3 Sep. 1983
Physics
Cosmic Rays, Flux (Rate), Origins, Protons, Radiation Distribution, Supernovae, Active Galactic Nuclei, Angular Distribution, Isotropy, Milky Way Galaxy
Scientific paper
Ultrahigh energy cosmic ray which are usually associated with an extragalactic origin. Active galactic nuclei are an unlikely source because of photon drag. Here the possibility of supernova events are considered. The time spread of arrival of 10(2)0 eV protons is 100 to 400 years at 10 to 20 kpc and the angular spread is +- 15 to +-300 depending upon the Galactic field configuration. The time spread is sufficient to include several to a dozen type I SN. This is enough events and angular spread to include the observed data. The concentration of the observed events at the galactic poles is contradictory. The flux is reasonable if the observed flux and slope at 10(12) to 10(15) eV is characteristic of the source(s) and confined at this energy for roughly 100 traversals of the Galaxy, or 3 x 10(6) years.
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