Spectral Features and Masses in the PeV Region

Details Spectral Features and Masses in the PeV Region Spectral Features and Masses in the PeV Region

2002-10-08

arxiv.org/abs/astro-ph/0210192v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, talk presented at XII Inrternational Symposium on Very High Energy Cosmic Ray Interactions, CERN, Geneva,

Scientific paper

10.1016/S0920-5632(03)80380-8

An analysis is made of the masses and spectral features for cosmic rays in the PeV region, insofar as they have a bearing on the problem of the interaction of cosmic ray particles. In our Single Source Model we identified two 'peaks' seen in a summary of the world's data on primary spectra, and claimed that they are probably due to oxygen and iron nuclei from a local, recent supernova. In the present work we examine other possible mass assignments. We conclude that of the other possibilities only Helium and Oxygen (instead of O and Fe) has much chance of success; the original suggestion is still preferred, however. Concerning our location with respect to the SNR shell, the analysis suggests that we are close to it - probably just inside.

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