Hardness/intensity correlations among BATSE bursts

Details Hardness/intensity correlations among BATSE bursts Hardness/intensity correlations among BATSE bursts

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..265..190p&link_type=abstract

Gamma-ray bursts. AIP Conference Proceedings, Volume 265, pp. 190-194 (1991).

Mathematics

Logic

Gamma-Ray Sources, Gamma-Ray Bursts, Observation And Data Reduction Techniques, Computer Modeling And Simulation

Scientific paper

Conclusions about the nature of γ-ray bursts derived from the size-frequency distribution may be altered if a significant correlation exists between burst intensity and spectral shape. Moreover, if γ-rays bursts have 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.

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