Determining the Supernova Direction by Its Neutrinos
Open Access
- 1 May 2002
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 107 (5) , 957-966
- https://doi.org/10.1143/ptp.107.957
Abstract
Supernova neutrinos, which arrive at Earth earlier than light, allow for the earliest determination of the direction of the supernova. The topic of this paper is to study how accurately we can determine the supernova direction. We simulate supernova neutrino events at the SuperKamiokande detector, using a realistic supernova model and several realistic neutrino oscillation models. With the results of our simulation, we can restrict the supernova direction to be within a circle of radius 9°. In several neutrino oscillation models, this accuracy is increased to 8°. We also discuss the influence of an accident that occurred at the SuperKamiokande detector. After repair of the detector, using the remaining PMTs, the accuracy becomes about 12° for no oscillation.Keywords
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