A look at supernova 1987A

Details A look at supernova 1987A A look at supernova 1987A

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988nuphs...3..471s&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 3, p. 471-493.

Physics

Nuclear Physics

3

Scientific paper

Supernova 1987A is reviewed with emphasis on the neutrino observations. It is shown that the results fit well with the expectations for neutrino temperatures (T ~ 4 to 4.5 MeV) and total energy emitted (2 to 4 × 105 3 ergs). It is argued that the detection tends to favor collapse models that yield emission for 10 second timescales with a 1 to 2 second early accretion phase followed by Kelvin-Helmholtz cooling as opposed to prompt shocks with the immediate onset of cooling. It is also argued that the probable detection of one or more electron scattering event favors a superthermal tail at high energies. Neutrino mass limits and flavor limits are comparable to laboratory experiments. An estimate for future collapse rates in our galaxy of 1/7 year is made based on nucleosynthesis yields. The supernova also has eliminated many axion and majoron models.

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