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Hardness/intensity correlations among BATSE burstsConclusions about the nature of gamma-ray bursts derived from the size-frequency distribution may be altered if a significant correlation exists between burst intensity and spectral shape. Moreover, if gamma-ray bursts have a cosmological origin, such a correlation may be expected to result from the expansion of the universe. We have performed a rudimentary search of the BATSE bursts for hardness/intensity correlations. The range of spectral shapes was determined for each burst by computing the ratio of the intensity in the range 100-300 keV to that in 55-300 keV. We find weak evidence for the existence of a correlation, the strongest effect being present when comparing the maximum hardness ratio for each burst with its maximum rate.
Document ID
19930056086
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Paciesas, William S.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Pendleton, Geoffrey N.
(Alabama Univ. Huntsville, United States)
Kouveliotou, Chryssa
(Universities Space Research Association Huntsville, AL, 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)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Gamma-ray bursts; Proceedings of the Workshop, Univ. of Alabama, Huntsville, Oct. 16-18, 1991 (A93-40051 16-93)
Publisher: American Institute of Physics
Subject Category
Space Radiation
Accession Number
93A40083
Distribution Limits
Public
Copyright
Other

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