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High-energy emission in gamma-ray burstsBetween February 1980 and August 1983 the Gamma-Ray Spectrometer on the Solar Maximum Mission Satellite (SMM) detected 72 events identified as being of cosmic origin. These events are an essentially unbiased subset of all gamma-ray bursts. The measured spectra of these events show that high energy (greater than 1 MeV) emission is a common and energetically important feature. There is no evidence for a general high-energy cut-off or a distribution of cut-offs below about 6 MeV. These observations imply a limit on the preferential beaming of high energy emission. This constraint, combined with the assumption of isotropic low energy emission, implies that the typical magnetic field strength at burst radiation sites is less than 1 x 10 to the 12th gauss.
Document ID
19850042225
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Matz, S. M.
(New Hampshire Univ. Durham, NH, United States)
Forrest, D. J.
(New Hampshire Univ. Durham, NH, United States)
Vestrand, W. T.
(New Hampshire Univ. Durham, NH, United States)
Chupp, E. L.
(New Hampshire, University Durham, NH, United States)
Share, G. H.
(U.S. Navy, E. O. Hulbert Center for Space Research, Washington DC, United States)
Rieger, E.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Date Acquired
August 12, 2013
Publication Date
January 15, 1985
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 288
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
85A24376
Funding Number(s)
CONTRACT_GRANT: NGL-30-002-021
CONTRACT_GRANT: NAS5-23761
CONTRACT_GRANT: NASA ORDER S-70926-A
CONTRACT_GRANT: BMFT-01-OK-017-ZA/WS/WK
Distribution Limits
Public
Copyright
Other

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