Evidence for TeV emission from GRB 970417a

被引：140
作者：
Atkins, R [1 ]
Benbow, W
Berley, D
Chen, ML
Coyne, DG
Dingus, BL
Dorfan, DE
Ellsworth, RW
Evans, D
Falcone, A
Fleysher, L
Fleysher, R
Gisler, G
Goodman, JA
Haines, TJ
Hoffman, CM
Hugenberger, S
Kelley, LA
Leonor, I
McConnell, M
McCullough, JF
McEnery, JE
Miller, RS
Mincer, AI
Morales, MF
Nemethy, P
Ryan, JM
Shen, B
Shoup, A
Sinnis, C
Smith, AJ
Sullivan, GW
Tumer, T
Wang, K
Wascko, MO
Westerhoff, S
Williams, DA
Yang, T
Yodh, GB
机构：
[1] Univ Utah, Salt Lake City, UT 84112 USA
[2] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA
[3] Univ Maryland, College Pk, MD 20742 USA
[4] Natl Sci Fdn, Arlington, VA 22230 USA
[5] Brookhaven Natl Lab, Upton, NY 11973 USA
[6] George Mason Univ, Fairfax, VA 22030 USA
[7] Univ New Hampshire, Durham, NH 03824 USA
[8] NYU, New York, NY 10003 USA
[9] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[10] Univ Calif Irvine, Irvine, CA 92697 USA
[11] Univ Calif Riverside, Riverside, CA 92521 USA
来源：
ASTROPHYSICAL JOURNAL | 2000年 / 533卷 / 02期
基金：
美国国家科学基金会;
关键词：
gamma rays : bursts; gamma rays : observations;
D O I：
10.1086/312629
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrito during this period. An excess of events coincident in time and space with one of these bursts, GRB 970417a, was observed by Milagrito. The excess has a chance probability of 2.8 x 10(-5) of being a fluctuation of the background. The probability for observing an excess at least this large from any of the 54 bursts is 1.5 x 10(-3). No significant correlations were detected from the other bursts.
引用
收藏
页码：L119 / L122
页数：4
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