Minimum variability time-scales of long and short GRBs

We have investigated the time variations in the light curves from a sample of long and short Fermi/GBM gamma-ray bursts (GRBs) using an impartial wavelet analysis. The results indicate that in the source frame, the variability time-scales for long bursts differ from that for short bursts, variabilit...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2013-06, Vol.432 (2), p.857-865
Main Authors: MacLachlan, G. A., Shenoy, A., Sonbas, E., Dhuga, K. S., Cobb, B. E., Ukwatta, T. N., Morris, D. C., Eskandarian, A., Maximon, L. C., Parke, W. C.
Format: Article
Language:English
Subjects:
Astrophysics
Gamma ray astronomy
Time
Wavelet transforms
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Summary:We have investigated the time variations in the light curves from a sample of long and short Fermi/GBM gamma-ray bursts (GRBs) using an impartial wavelet analysis. The results indicate that in the source frame, the variability time-scales for long bursts differ from that for short bursts, variabilities of the order of a few milliseconds are not uncommon and an intriguing relationship exists between the minimum variability time and the burst duration.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stt241