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Observation of a Neutrino Burst from the Supernova SN1987a: The KAMIOKANDE-II Collaboration

Published online by Cambridge University Press:  12 April 2016

Yoji Totsuka*
Affiliation:
ICEPP, Faculty of ScienceUniversity of Tokyo

Extract

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A neutrino burst was observed in the KAMIOKANDE-II detector on 23 February, 7:35:35 UT ( ±1 minute) during a time interval of 13 seconds. The signal consisted of 11 electron events of energy 7.5 to 36 MeV, of which the first 2 point back to the Large Magellanic Cloud (LMC) with angles 18° ± 18 ° and 15° ± 27°.

A new analysis of the special low threshold trigger counts strongly indicates that KAMIOKANDE did not observe any signals at 2:52:36 which is the time claimed by the Mont Blanc group.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Copyright
Copyright © Springer-Verlag 1988

References

[1] IAU Circular No.4316.Google Scholar
[2] Hirata, K. et al., Phys. Rev. Lett. 58 (1987) 1490.CrossRefGoogle Scholar
[3] Beier, E.W., Proceedings of 7th WOGU/ICOBAN’86, April, 1986. Toyama, Japan.Google Scholar
[4] This is for the entire volume inside the PMT array. The detection efficiency for a fiducial volume of 780 ton, 2m inside the PMT array is 90% at 10 MeV and 50% at 7.6 MeV.Google Scholar
[5] Suzuki, A., Proceedings of the 12th Int. Conf. on Neutrino Physics and Astrophysics, page 306, June, 1986, Sendai, Japan.Google Scholar
[6] Aglietta, M. et al., Europhys. Lett. 3 (1987) 1315.CrossRefGoogle Scholar
[7] de Rujula, A., Phys. Lett. 193(1987) 514.CrossRefGoogle Scholar