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The Minimum Variability Time Scale and its Relation to Pulse Profiles of Fermi GRBs

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arxiv 1205.0055 v4 pith:XUV3Z4SX submitted 2012-04-30 astro-ph.HE

G. A. MacLachlan , A. Shenoy , E. Sonbas , K. S. Dhuga , A. Eskandarian , L. C. Maximon , W. C. Parke This is my paper · ORCID
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keywords pulsesextractedfermifittedminimumtimeusedvariability
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We present a direct link between the minimum variability time scales extracted through a wavelet decomposition and the rise times of the shortest pulses extracted via fits of 34 Fermi GBM GRB light curves comprised of 379 pulses. Pulses used in this study were fitted with log-normal functions whereas the wavelet technique used employs a multiresolution analysis that does not rely on identifying distinct pulses. By applying a corrective filter to published data fitted with pulses we demonstrate agreement between these two independent techniques and offer a method for distinguishing signal from noise.

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