Can neutrino effects establish core-collapse supernovae as the site of the r-process?

Details Can neutrino effects establish core-collapse supernovae as the site of the r-process? Can neutrino effects establish core-collapse supernovae as the site of the r-process?

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..apr..k301q&link_type=abstract

American Physical Society, APS/AAPT Joint Meeting, April 18-21, 1997, abstract #K3.01

Physics

Scientific paper

Roughly half the natural abundance of elements with mass number A>70 and all of the actinides come from the rapid neutron capture process, or the r-process. Since Burbidge, Burbidge, Fowler, and Hoyle coined the name ``r-process'' about four decades ago, where the r-process occurs has been a mystery, although there is a strong prejudice that it takes place in core-collapse supernovae. With significant progress in both observation and theory in recent years, this prejudice is likely to become a fact. In this talk, I discuss the effects of the intense supernova neutrino flux on the r-process nucleosynthesis. In particular, I show how such effects can lead to signatures in the observed r-process abundance pattern, thus providing a strong evidence for an r-process in core-collapse supernovae. Furthermore, I discuss how the r-process nucleosynthesis is sensitive to the properties of neutrinos once core-collapse supernovae are established as the r-process site. In conclusion, I stress that the study of the supernova r-process nucleosynthesis has vividly revealed a strong interplay between nuclear, particle, and astro- physics. Ultimately, the mystery of the r-process site may have to be solved by laboratory neutrino experiments.

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