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A 2.2 second period in the 1984 August 5 gamma-ray burstA time history and Fourier power spectrum are presented for the August 5, 1984 gamma-ray burst (GRB) observed with the SMM Hard X-ray Burst Spectrometer and the Pioneer Venus Orbiter spacecraft. A significant complex feature of the event is identifiable in both data sets: a gradual ripple with a well-defined 2.2-sec period lasting for seven cycles, with a series of narrow spikes, which appear always on the ascending phase of the sinusoidal ripple. This event is unusual in both its temporal and spectral attributes: it exhibits coexistence of periodic and nonperiodic features, and it was also reported as the most intense GRB event observed with the SMM Gamma-Ray Spectrometer, extending up to 100 MeV.
Document ID
19880058918
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kouveliotou, C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Desai, U. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cline, T. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Dennis, B. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fenimore, E. E.
(Los Alamos National Laboratory NM, United States)
Date Acquired
August 13, 2013
Publication Date
July 15, 1988
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 330
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
88A46145
Funding Number(s)
CONTRACT_GRANT: NSG-5066
Distribution Limits
Public
Copyright
Other

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