Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-08-30
Nucl.Phys.Proc.Suppl. 91 (2000) 345-350
Astronomy and Astrophysics
Astrophysics
6 pages including 2 figures, to appear in the Proceedings of Neutrino 2000
Scientific paper
10.1016/S0920-5632(00)00961-0
Intense fluxes of neutrinos are emitted by the hot neutron star produced in a supernova. The electron neutrino and antineutrino capture reactions on neutrons and protons, respectively, provide heating to drive a wind from the hot neutron star. The same reactions also determine the neutron-richness of the wind material. Nucleosynthesis via rapid neutron capture, the r-process, may occur in the wind material as it expands away from the neutron star. The neutron-richness of the wind material, and hence, the r-process nucleosynthesis therein, are sensitive to mixing between the muon (or tauon) neutrino/antineutrino and the electron (or sterile) neutrino/antineutrino. Indirect arguments and direct tests for the supernova origin of the r-process elements are discussed with a goal to establish supernova r-process nucleosynthesis as an important probe for neutrino mixing.
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