A Single Source for Galactic Cosmic Rays in the 109-1018.5 eV Range?

Details A Single Source for Galactic Cosmic Rays in the 109-1018.5 eV Range? A Single Source for Galactic Cosmic Rays in the 109-1018.5 eV Range?

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....5.1788k&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

1

Scientific paper

We propose that the galactic cosmic ray spectrum comprises two components:(a) One due to acceleration in suprenova shocks which yields proton spectra of index γSN 2.68 which cut-off at an energy Ep ˜ 1014 eV and spectra for higher Z nuclei of similar slopes and cut-off energies EZ = ZEp, as demanded by the rigidity dependent cut-off of shock acceleration. (b) An additional component of slope γ2 .6 that consists mainly of protons and extends to an energy E0 1018.5 eV, the limiting energy for confining protons within the galaxy. We examine to what extent the current data are consistent with the above decomposition and the recent proposal that the "knee" of the cosmic ray spectrum at E ˜ 1015.5 eV is due to new interactions beyond those of the Standard Model of Weak EM interactions.

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