Tuesday, May 16, 2006, 11:00 am — Building 510, Room 2-160
Neutrinos are extremely important in a core collapse supernova, as they dominate its energy budget and are involved in a variety of crucial processes in the star. They also give unique information on the interior of the star, opaque to photons, and on the neutrino properties, in particular on the neutrino mixing matrix and mass spectrum. After the observation of neutrinos from SN1987A, the study of supernova neutrinos is entering a new phase, with the first strong bounds on the diffuse flux of neutrinos from all supernovae. These bounds approach the range of theoretical predictions of the flux, so that the time is mature for in-depth work to update those predictions and determine their uncertainties. These are dominated by the poor knowledge of the spectra of the neutrinos produced inside a supernova, and have a strong impact on the
possibility to use neutrino data to learn on the cosmic supernova rate.
Hosted by: Anna Stasto
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