Physics – Nuclear Physics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aps..apr.u2003w&link_type=abstract
American Physical Society, APS April Meeting, April 16-19, 2005, abstract #U2.003
Physics
Nuclear Physics
Scientific paper
It is by now well established that the bulk of the elements heavier than helium have been assembled in stars, and that supernovae have played a major role in this synthesis. Though there remain some interesting exceptions - the origin of the light p-process nuclei and a few other rare isotopes and the site for the r-process, to name but two - the abundances we see in the sun are, at least qualitatively, understood. Nucleosynthesis is thus increasingly used as a diagnostic for cosmic events and evolution. From the numerous possibilities, I will discuss four in some detail: nucleosynthetic diagnostics of a) the neutrino burst in core-collapse supernovae; b) the neutrino-powered wind from young neutron stars; c) the average rate of nucleosynthesis in the Galaxy as evidenced by the abundances of gamma-ray line emitters ^26Al and ^60Fe; and d) Population III stars, ``hypernovae,'' and gamma-ray bursts. Uncertainties in nuclear physics will be discussed where appropriate.
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