The Minimum Variability Time Scale and its Relation to Pulse Profiles of Fermi GRBs
High Energy Astrophysical Phenomena
2015-06-04 v4
Abstract
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.
Keywords
Cite
@article{arxiv.1205.0055,
title = {The Minimum Variability Time Scale and its Relation to Pulse Profiles of Fermi GRBs},
author = {G. A. MacLachlan and A. Shenoy and E. Sonbas and K. S. Dhuga and A. Eskandarian and L. C. Maximon and W. C. Parke},
journal= {arXiv preprint arXiv:1205.0055},
year = {2015}
}
Comments
Accepted for publication in MNRAS Letters. 4 pages, 4 figures