High energy cosmic ray spectroscopy. IV. The evidence from direct observations at lower energies and directional anisotropies

Details High energy cosmic ray spectroscopy. IV. The evidence from direct observations at lower energies and directional anisotropies High energy cosmic ray spectroscopy. IV. The evidence from direct observations at lower energies and directional anisotropies

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aph.....8..283e&link_type=abstract

ASTROPARTICLE PHYSICS, Volume 8, Issue 4, p. 283-292.

Physics

24

Scientific paper

In previous papers (A.D. Erlykin, A.W. Wolfendale, Astropart. Phys. 7 (1997) 1, 203; 8 (1998) 265; J. Phys. G 23 (1997) 979), we presented evidence for structure in the size spectrum of cosmic ray air showers which we interpreted as due to the presence of oxygen and iron nuclei from a local, recent, supernova remnant. Although the energies in question are 3x10^15 eV and 1.2x10^16 eV, well above those where direct measurements are possible, the direct measurements are, in fact, relevant. We find that the direct measurements are quite consistent with an extrapolation back of our spectra. Indeed, taken alone, the direct measurements themselves provide strong evidence for the existence of an extra, single source contribution to the total energy spectrum. The paper also includes a discussion of the high energy electron spectrum, anisotropies and the likely site of the local SNR.

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