Neutrino emission from type II supernovae - an analysis of the spectra

Details Neutrino emission from type II supernovae - an analysis of the spectra Neutrino emission from type II supernovae - an analysis of the spectra

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224...49j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. 49-56.

Statistics

Computation

88

Neutrinos, Spectrum Analysis, Stellar Radiation, Stellar Spectra, Supernovae, Black Body Radiation, Computational Astrophysics, Monte Carlo Method, Stellar Mass Accretion, Supernova 1987A

Scientific paper

A Monte Carlo transport code was used to compute spectra of neutrinos of all flavors for two stages after the collapse of the iron core of a 20 solar mass star. It is demonstrated that the neutrinos emitted during the mass accretion phase of the hot shocked core are not thermalized with the matter around the 'neutrino sphere' and that their energy distributions are more narrow than blackbody Fermi-Dirac distributions. Parameterizations for a thermal description are given and attempts to fit the nonthermal behavior are tested. Implications of these results for the interpretation SN 1987A, are discussed.

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