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Astron. Astrophys. 330, 389-398 (1998)

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5. Summary

Here we have discussed first the predictions and the errors inherent in the theory to explain the origin of cosmic rays proposed by (paper CR I and later papers) and then give the cosmic ray spectra above [FORMULA] GeV for all elements from [FORMULA] to 28, based on the full available set of data. Fitting powerlaws to the spectra we compare the powerlaw indices with the prediction.

The agreement is quite satisfactory.

The spectra imply that a substantial component of spallation exists at the source, with a grammage of order [FORMULA] ; such a level of spallation can be understood from the interaction of the cosmic rays in the supernova shock as it hits a surrounding molecular shell (see Nath & Biermann 1994b).

Further work will concentrate on improving our understanding of the detailed abundances of cosmic rays.

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© European Southern Observatory (ESO) 1998

Online publication: January 8, 1998
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