Gamma-Ray Bursts are Produced Predominately in the Early Universe
Astrophysics
2007-05-23 v2
Abstract
It is known that some observed gamma-ray bursts (GRBs) are produced at cosmological distances and that the GRB production rate may follow the star formation rate. We model the BATSE-detected intensity distribution of long GRBs in order to determine their space density distribution and opening angle distribution. Our main results are: the lower and upper distance limits to the GRB production are z 0.24 and >10, respectively; the GRB opening angle follows an exponential distribution and the mean opening angle is about 0.03 radians; and the peak luminosity appears to be a better standard candle than the total energy of a GRB.
Keywords
Cite
@article{arxiv.astro-ph/0311363,
title = {Gamma-Ray Bursts are Produced Predominately in the Early Universe},
author = {J. R. Lin and S. N. Zhang and T. P. Li},
journal= {arXiv preprint arXiv:astro-ph/0311363},
year = {2007}
}
Comments
12 pages, 2 figure