Log-normal Distributions in Gamma-Ray Burst Time Histories
Open Access
- 1 October 1996
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 469 (2) , L115-L118
- https://doi.org/10.1086/310275
Abstract
We propose a new, simple but powerful algorithm to analyze the gamma-ray burst temporal structures based on identifying nonstatistical variations ("peaks") in the time histories. Detailed analyses of the bursts from the third BATSE catalog show that ~30 bursts have more than 20 peaks individually. Upon identifying most of the peaks in those bursts, we show that the peak fluence Si, and peak interval δi distributions within each burst are consistent with log-normal distributions. Furthermore, we show that Gaussian (in linear space) and power-law distributions for peak fluences are ruled out, as is the Poisson distribution for peak intervals.Keywords
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