Searches for ultra-high-energy gamma rays from SN 1987A and centaurus X-3

被引：6
作者：
Yoshi, H
Baba, T
Kaneko, T
Suga, K
Kakimoto, F
Ogio, S
Shirasaki, Y
Gironda, N
Teshima, M
Toyoda, Y
Murakami, K
Matsubara, Y
Mizumoto, Y
Matsuoka, M
Nishi, K
Tajima, N
Shimoda, S
Nakatani, H
Yamada, Y
Gotoh, E
Veralde, A
Siles, L
Miranda, P
Velasquez, W
Poma, I
机构：
[1] OKAYAMA UNIV,DEPT PHYS,OKAYAMA 700,JAPAN
[2] TOKYO INST TECHNOL,DEPT PHYS,MEGURO KU,TOKYO 152,JAPAN
[3] UNIV TOKYO,INST COS RAY RES,TANASHI,TOKYO 188,JAPAN
[4] FUKUI UNIV TECHNOL,FAC GEN EDUC,FUKUI 910,JAPAN
[5] NAGOYA UNIV FOREIGN STUDIES,NISSHIN,AICHI 47001,JAPAN
[6] NAGOYA UNIV,SOLAR TERR ENVIRONM LAB,NAGOYA,AICHI 46401,JAPAN
[7] NATL ASTRON OBSERV,MITAKA,TOKYO 181,JAPAN
[8] INST PHYS & CHEM RES,WAKO,SAITAMA 35101,JAPAN
[9] UNIV MAYOR SAN ANDRES,INST INVEST FIS,LA PAZ,BOLIVIA
来源：
ASTROPHYSICAL JOURNAL | 1996年 / 472卷 / 02期
关键词：
gamma rays; observations; stars; individual (Centaurus X-3); supernovae; individual; (SN; 1987A);
D O I：
10.1086/178108
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Searches for gamma rays above 100 TeV from SN 1987A and above 50 TeV from Cen X-3 were carried out with an air shower array at Mount Chacaltaya over a period of 3 years. The array, which consists of 13 4 m(2) and 28 1 m(2) scintillation detectors, was located on a slope of about 30 degrees facing southward to effectively observe air showers coming from the directions of these sources. In the analysis, a selection by shower age parameter was applied to reduce the background due to showers initiated by protons or nuclei. No significant excess of gamma rays (and/or neutral particles) from these sources was found; our upper limits on the flux of gamma rays above 100 TeV from SN 1987A and above 50 TeV from Cen X-3 are 2.2 x 10(-13) and 3.5 x 10(-13) photons cm(-2) s(-1) (95% confidence level), respectively.
引用
收藏
页码：800 / 805
页数：6
相关论文
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