Determining the supernova direction of its neutrinos

被引：25

作者：

Ando, S ^{[1
]}

Sato, K

机构：

[1] Univ Tokyo, Dept Phys, Sch Sci, Tokyo 1130033, Japan

[2] Univ Tokyo, Res Ctr Early Universe, Sch Sci, Tokyo 1130033, Japan

来源：

PROGRESS OF THEORETICAL PHYSICS | 2002年 / 107卷 / 05期

关键词：

D O I：

10.1143/PTP.107.957

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 9degrees. In several neutrino oscillation models, this accuracy is increased to 8degrees. 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 12degrees for no oscillation.

引用

页码：957 / 966

页数：10

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