Cosmic rays from Wolf-Rayet stars

Details Cosmic rays from Wolf-Rayet stars Cosmic rays from Wolf-Rayet stars

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icrc....9..159c&link_type=abstract

IN: International Cosmic Ray Conference, 18th, Bangalore, India, August 22-September 3, 1983, Late Papers. Volume 9 (A85-22801 0

Computer Science

Cosmic Rays, Stellar Composition, Wolf-Rayet Stars, Carbon, Helium, Isotopic Enrichment, Magnesium, Oxygen, Stellar Models

Scientific paper

Some points of the scenario in which Wolf-Rayet (WR) stars are the sources of cosmic rays (CRs) are discussed. The relative contributions of hydrogen-burning (WN) stars and helium-burning (WC) stars to the CR source composition are briefly addressed, and possible difficulties of the WR source model, including the silicon isotopes at CR sources and the N problem, are briefly considered. It is concluded that while encouraging agreement has been obtained between the WR source model and isotopic anomalies of Ne and Mg at CR sources, the Si isotopic anomalies, if real, are not explained. This suggests that the WR scenario is probably not unique, and a composite picture of CR sources seems difficult to avoid.

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