Isotropy of ultra-high-energy cosmic rays and multiple supernova I galactic source

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Ultra-high-energy cosmic rays 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/sup 20/ eV protons is 100 to 400 years at 10 to 20 kpc and the angular spread is +-15 to +-30/sup 0/ 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 … continued below

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4 pages

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Colgate, S. A. April 7, 1983.

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Ultra-high-energy cosmic rays 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/sup 20/ eV protons is 100 to 400 years at 10 to 20 kpc and the angular spread is +-15 to +-30/sup 0/ 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/sup 12/ to 10/sup 15/ eV is characteristic of the source(s) and confined at this energy for roughly 100 traversals of the Galaxy, or 3 x 10/sup 6/ years.

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4 pages

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NTIS, PC A02/MF A01.

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  • 18. international cosmic ray conference, Bangalore, India, 22 Aug 1983

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  • Other: DE83011319
  • Report No.: LA-UR-83-1049
  • Report No.: CONF-830830-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 6036786
  • Archival Resource Key: ark:/67531/metadc1098216

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  • April 7, 1983

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  • Feb. 18, 2018, 3:59 p.m.

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  • Feb. 3, 2020, 2:44 p.m.

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Colgate, S. A. Isotropy of ultra-high-energy cosmic rays and multiple supernova I galactic source, article, April 7, 1983; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1098216/: accessed May 11, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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