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Department of Physics

Staff profile

Publication details for Prof Sir Arnold Wolfendale

Erlykin, AD & Wolfendale, AW (2005). Further evidence favouring the single source model for cosmic rays. Astroparticle Physics 23(1): 1-9.
  • Publication type: Journal Article
  • ISSN/ISBN: 0927-6505
  • Keywords: MASS COMPOSITION; MONOGEM RING; ENERGIES; SPECTRUM; KNEE; PEV;SPECTROSCOPY

Author(s) from Durham

Abstract

A detailed examination has been made of recent estimates of the energy
spectra of the different mass components of cosmic rays. Although the
results depend on the interaction models used, sufficient insight is
provided to allow us to confirm that the spectral changes needed to
explain the data are too sharp to be accounted for by the process of
conventional Galactic Modulation, i.e. a gradual leaking out of
particles from the Galaxy. Instead they fit well our 'single source
model' which explains features in the spectra as being due to oxygen
nuclei (at similar to3 PeV) and iron nuclei (at 12 PeV).
The presence of further structure in the spectrum beyond about 50 PeV
is hinted at. (C) 2004 Elsevier B.V. All rights reserved.