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The continuum spectral characteristics of gamma ray bursts observed by BATSEDistributions of the continuum spectral characteristics of 260 bursts in the first Burst and Transient Source Experiment (BATSE) catalog are presented. The data are derived from flux ratios calculated from the BATSE Large Area Detector (LAD) four channel discriminator data. The data are converted from counts to photons using a direct spectral inversion technique to remove the effects of atmospheric scattering and the energy dependence of the detector angular response. Although there are intriguing clusterings of bursts in the spectral hardness ratio distributions, no evidence for the presence of distinct burst classes based on spectral hardness ratios alone is found. All subsets of bursts selected for their spectral characteristics in this analysis exhibit spatial distributions consistent with isotropy. The spectral diversity of the burst population appears to be caused largely by the highly variable nature of the burst production mechanisms themselves.
Document ID
19940022183
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Pendleton, Geoffrey N.
(Alabama Univ. Huntsville., United States)
Paciesas, William S.
(Alabama Univ. Huntsville., United States)
Briggs, Michael S.
(Alabama Univ. Huntsville., United States)
Mallozzi, Robert S.
(Alabama Univ. Huntsville., United States)
Koshut, Tom M.
(Alabama Univ. Huntsville., United States)
Fishman, Gerald J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Meegan, Charles A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Wilson, Robert B.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Harmon, Alan B.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Kouveliotou, Chryssa
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
February 15, 1994
Publication Information
Publication: Alabama Univ., BATSE Data Analysis
Subject Category
Space Radiation
Accession Number
94N26686
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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