Nucleosynthetic Contributions to the Cosmic-Rays Source

Details Nucleosynthetic Contributions to the Cosmic-Rays Source Nucleosynthetic Contributions to the Cosmic-Rays Source

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..aprh14008w&link_type=abstract

American Physical Society, April Meeting, April 28 - May 1, 2001 Washington, DC Bulletin of the American Physical Society, Vol.

Physics

Scientific paper

Measurements of low-energy galactic cosmic rays by the Cosmic-Ray Isotope Spectrometer on the Advanced Composition Explorer spacecraft have been used to derive the abundances of more than 20 isotopes in cosmic-ray source material. Comparison of the derived composition with the calculated yields from various types of supernovae can provide constraints on the relative contributions of these objects to the cosmic-ray source. We will summarize the present state of the observations and the source abundance determinations and will present derived upper limits on the fractions of this material that could have been synthesized in supernovae over a range of stellar masses. Research was supported by NASA at Caltech (under grant NAG5-6912), JPL, NASA/GSFC, and Washington U.

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