The High‐Energy Gamma‐Ray Fluence and Energy Spectrum of GRB 970417a from Observations with Milagrito
Author(s) -
R. Atkins,
W. Benbow,
D. Berley,
M. L. Chen,
D. G. Coyne,
B. L. Dingus,
D. E. Dorfan,
R. W. Ellsworth,
David A.D. Evans,
A. Falcone,
Lazar Fleysher,
Roman Fleysher,
G. Gisler,
M. M. González,
J. A. Goodman,
T. J. Haines,
C. M. Hoffman,
S. Hugenberger,
L. A. Kelley,
S. R. Klein,
I. Leonor,
J. F. McCullough,
J. E. McEnery,
R. S. Miller,
A. I. Mincer,
M. F. Morales,
P. Némethy,
J. M. Ryan,
F. W. Samuelson,
B. C. Shen,
A. Shoup,
G. Sinnis,
A. J. Smith,
G. W. Sullivan,
Tümay O. Tümer,
K. Wang,
M. O. Wascko,
S. Westerhoff,
D. A. Williams,
T. Yang,
G. B. Yodh
Publication year - 2003
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/345499
Subject(s) - gamma ray burst , astrophysics , fluence , energy (signal processing) , energy spectrum , physics , astronomy , gamma ray , nuclear physics , irradiation , quantum mechanics
Evidence of TeV emission from GRB970417a has been previously reported usingdata from the Milagrito detector. Constraints on the TeV fluence and the energyspectrum are now derived using additional data from a scaler system thatrecorded the rate of signals from the Milagrito photomultipliers. This analysisshows that if emission from GRB970417a has been observed, it must containphotons with energies above 650 GeV. Some consequences of this observation arediscussed.Comment: Submitted to the Astrophysical Journa
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