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Collapse of the Neutron Star Induced by Phase Transitions and Neutrino Emission from SN1987A

Published online by Cambridge University Press:  12 April 2016

Mariko Takahara  and
Katsuhiko Sato
Mariko Takahara
Affiliation:
Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
Katsuhiko Sato
Affiliation:
Department of Physics, University of Tokyo, Tokyo, Japan

Extract

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The neutrino burst from SN1987A were detected by KAMIOKANDE and also IMB in February this year. The neutrino events detected by KAMIOKANDE were clustered into three bunches; event number 1-5, 7-9, 10-12. The first two bunches of the neutrino events can be understood by the standard scenario of supernova explosions.

However, it is very difficult to explain the last bunch of the neutrino events by the standard scenario, especially the total energy of the neutrinos and the radius of the neutrino sphere; it is necessary at least several times of 1052 ergs to explain the total energy of the last three events. In order to explain this energy, we must consider the non-standard mechanism of the neutrino emission.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 430 - 431
Copyright
Copyright © Springer-Verlag 1988