The modulation of neutrinos from SN 1987 A during stellar collapse

Details The modulation of neutrinos from SN 1987 A during stellar collapse The modulation of neutrinos from SN 1987 A during stellar collapse

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...185l..13d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 185, no. 1-2, Oct. 1987, p. L13-L15.

Statistics

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7

Gravitational Collapse, Gravitational Lenses, Neutrino Beams, Supernova 1987A, Computational Astrophysics, Stellar Mass

Scientific paper

The time separation between the neutrino events from SN 1987 A measured by the Kamiokande-II and IMB detectors are examined for deviations from exponentiality: the significance of the existence of a 7-sec delay of neutrinos in the Kamiokande data is 3.1 sigma, while the IMB data shows no significant deviation from exponentiality. It was reported that Kamiokande saw a 0.2024-sec periodicity at a confidence level of 99.9 percent, while IMB did not see any such effect. The idea of the gravitational lensing of the Kamiokande neutrinos is inconsistent with the observed periodicity. The apparently clashing results will be consistent if the time of Kamiokande's first neutrino is UT 7:35:31 + or - 2 sec, the probable time of stellar collapse.

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