A New Frequency-Luminosity Relation for Long GRBs?

Details A New Frequency-Luminosity Relation for Long GRBs? A New Frequency-Luminosity Relation for Long GRBs?

2010-11-19

arxiv.org/abs/1011.4342v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

9 pages, 17 figures, 1 table; Accepted for publication in MNRAS

Scientific paper

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.

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