Letter to the Editor
The origin of PeV cosmic rays
Received 8 December 1999 / Accepted 18 March 2000
The search for the origin of cosmic rays is a continuing one. The energy range covered is immense: 109 eV to 3.1020 eV, and perhaps beyond. Only at the lowest energies ( eV) have analyses of gamma rays (e.g. Osborne et al., 1995) shown that supernova remnants are probably important - above this there is great uncertainty. In a series of papers, we (e.g. Erlykin and Wolfendale, 1997a) have claimed that a 40-year old property of the cosmic ray energy spectrum at eV (3 PeV) - the so-called `knee' - is in fact a complex feature that is strongly related to the origin mechanism. Specifically, we have made the case for the feature being due to a single, recent, local supernova. The case has not been accepted by the community, hitherto, but here we present very recent results which complement those analysed earlier and give, in our view, support to the hypothesis; at least for the contention that there is structure. We have now seen the same, complex, feature in every aspect of the cosmic radiation that we have examined.
Key words: acceleration of particles ISM: cosmic rays
This article contains no SIMBAD objects.
© European Southern Observatory (ESO) 2000
Online publication: April 17, 2000