High energy rise of the cosmic ray positron fraction: Possible causes

Details High energy rise of the cosmic ray positron fraction: Possible causes High energy rise of the cosmic ray positron fraction: Possible causes

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009nuphs.194..145s&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 194, p. 145-150.

Physics

Nuclear Physics

Scientific paper

In the last year, the PAMELA satellite has suggested an “anomalous” rise with energy of the cosmic ray positron fraction. Several explanations have been proposed: here I recapitulate the basic physics behind astrophysical explanations and summarize the existing issues in interpreting the data via dark matter. In particular, I will discuss observational ways to test different scenarios.

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