Wavelet Analysis and Lognormal Distributions in GRBs

Details Wavelet Analysis and Lognormal Distributions in GRBs Wavelet Analysis and Lognormal Distributions in GRBs

1998-07-21

arxiv.org/abs/astro-ph/9807219v1

AIP Conf.Proc.428:191,1997

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures

Scientific paper

10.1063/1.55319

A wavelet analysis has been performed on 80 intense gamma-ray bursts GRBs) from the BATSE 3B catalog with durations longer than 2 seconds. The wavelet analysis applied novel features developed for edge detection in image processing and this filtering process was used to extract a fit to the irregular GRB profile from the background. A straightforward algorithm was subsequently used to identify statistically significant peaks in this profile. The areas and FWHM of 270 peaks that were characterised as isolated were found to be consistent with lognormal distributions. The distribution of time intervals between peak maxima for all 963 identified peaks in the GRBs is also presented.

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