Structure in the cosmic ray spectrum: an update
- 5 April 2001
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 27 (5) , 1005-1030
- https://doi.org/10.1088/0954-3899/27/5/305
Abstract
An update is given of the evidence from extensive air showers relating to our claim that there is `structure' in the energy spectrum of high-energy cosmic rays. The structure is explained, in our model, in terms of there having been a recent nearby supernova, the remnant of which has accelerated cosmic ray nuclei, with rather sharp energy cut-offs at ~ 3×106 GeV for oxygen nuclei and ~ 1×107 GeV for iron nuclei. The addition of the later data on the shower size spectra which amounts to a 250% increase and includes that of Cherenkov radiation, hadrons and muons, is considered by us to enhance the probability of our model being correct, although the case is still not `watertight'.Keywords
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