On the Power Spectrum Density of Gamma Ray Bursts
Astrophysics
2009-11-06 v1
Abstract
Gamma ray bursts (GRBs) are known to have short-time variability and power-law behavior with the index -1.67 in the power spectrum density. Reanalyzing the expanded data, we have found a) the power-law comes from the global profile of the burst and not from the self-similar shots nor rapid fluctuations in the luminosity profile. b) The power indices vary from burst to burst and the value -1.67 is given simply as the mean value of the distribution; there is no systematic correlation among GRBs to yield the power law.
Keywords
Cite
@article{arxiv.astro-ph/0104232,
title = {On the Power Spectrum Density of Gamma Ray Bursts},
author = {Motoko Suzuki and Masahiro Morikawa and Izumi Joichi},
journal= {arXiv preprint arXiv:astro-ph/0104232},
year = {2009}
}
Comments
10 pages, 4 figures, submitted to ApJ Letters