학술논문
First results of a study of TeV emission from GRBs in Milagrito
Document Type
article
Author
Miller, RS; Atkins, R; 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; 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
Source
FIFTH COMPTON SYMPOSIUM. 510(1)
Subject
Language
Abstract
Milagrito, a detector sensitive to gamma-rays at TeV energies, monitored thenorthern sky during the period February 1997 through May 1998. With a largefield of view and high duty cycle, this instrument was used to perform a searchfor TeV counterparts to gamma-ray bursts. Within the Milagrito field of view 54gamma-ray bursts at keV energies were observed by the Burst And TransientSatellite Experiment (BATSE) aboard the Compton Gamma-Ray Observatory. Thispaper describes the results of a preliminary analysis to search for TeVemission correlated with BATSE detected bursts. Milagrito detected an excess ofevents coincident both spatially and temporally with GRB 970417a, with chanceprobability $2.8 \times 10^{-5}$ within the BATSE error radius. No othersignificant correlations were detected. Since 54 bursts were examined thechance probability of observing an excess with this significance in any ofthese bursts is $1.5 \times 10^{-3}$. The statistical aspects and physicalimplications of this result are discussed.