Scale-invariance in soft gamma repeaters
Abstract
The statistical properties of the soft gamma repeater SGR J1550--5418 are investigated carefully. We find that the cumulative distributions of fluence, peak flux and duration can be well fitted by a bent power law, while the cumulative distribution of waiting time follows a simple power law. In particular, the probability density functions of fluctuations of fluence, peak flux, and duration have a sharp peak and fat tails, which can be well fitted by a -Gaussian function. The values keep approximately steady for different scale intervals, indicating a scale-invariant structure of soft gamma repeaters. Those results support that the origin of soft gamma repeaters is crustquakes of neutron stars with extremely strong magnetic fields.
Cite
@article{arxiv.1702.05842,
title = {Scale-invariance in soft gamma repeaters},
author = {Zhe Chang and Hai-Nan Lin and Yu Sang and Ping Wang},
journal= {arXiv preprint arXiv:1702.05842},
year = {2017}
}
Comments
7 pages, 5 figures, 2 tables