SN1987Aからのup going muon(基研短期研究会「SN1987A」,研究会報告)

概要

論文の詳細を見る
A search was made for high energy neutrinos from SN1987A. Actually, upward-going muons with energy greater than 1.7GeV produced in the near by rock by neutrinos from SN1987A were searched for in a 2140 ton underground water Cherenkov detector, KAMIOKANDE-II. No upward-going muons from the direction of SN1987A were found within the time period between February 23, 1987 and September 1, 1987. The 90% C.L. flux limit of the upward-going muons from SN1987A is found to be 1.2×10^<-13>cm^<-2>s^<-1> for the energy threshold of 1.7GeV. For neutrino energy greater than 1.7GeV, limits on the SN1987A neutrino flux and luminosity are: 2.4×10^<-5>cm^<-2>s^<-1> and 1.6×10^<41>erg・s^<-1> for a cutoff energy E_c=10^<15>eV and a spectral index γ=2.1; and 2.3×10^<-3>cm^<-2>s^<-1> and 4.6×10^<42>erg・s^<-1> for E_c=10^<12>eV and γ=2.7.
素粒子論グループ素粒子研究編集部の論文
1988-05-20