A New Frequency-Luminosity Relation for Long GRBs?
High Energy Astrophysical Phenomena
2015-05-20 v1
Abstract
We have studied power density spectra (PDS) of 206 long Gamma-Ray Bursts (GRBs). We fitted the PDS with a simple power-law and extracted the exponent of the power-law (alpha) and the noise-crossing threshold frequency (f_th). We find that the distribution of the extracted alpha peaks around -1.4 and that of f_th around 1 Hz. In addition, based on a sub-set of 58 bursts with known redshifts, we show that the redshift-corrected threshold frequency is positively correlated with the isotropic peak luminosity. The correlation coefficient is 0.57 +/- 0.03.
Keywords
Cite
@article{arxiv.1011.4342,
title = {A New Frequency-Luminosity Relation for Long GRBs?},
author = {T. N. Ukwatta and K. S. Dhuga and D. C. Morris and G. MacLachlan and W. C. Parke and L. C. Maximon and A. Eskandarian and N. Gehrels and J. P. Norris and A. Shenoy},
journal= {arXiv preprint arXiv:1011.4342},
year = {2015}
}
Comments
9 pages, 17 figures, 1 table; Accepted for publication in MNRAS