Redshifts of the Long Gamma-Ray Bursts
Astrophysics
2007-05-23 v1
Abstract
The low energy spectra of some gamma-ray bursts' show excess components beside the power-law dependence. The consequences of such a feature allows to estimate the gamma photometric redshift of the long gamma-ray bursts in the BATSE Catalog. There is good correlation between the measured optical and the estimated gamma photometric redshifts. The estimated redshift values for the long bright gamma-ray bursts are up to z=4, while for the the faint long bursts - which should be up to z=20 - the redshifts cannot be determined unambiguously with this method. The redshift distribution of all the gamma-ray bursts with known optical redshift agrees quite well with the BATSE based gamma photometric redshift distribution.
Keywords
Cite
@article{arxiv.0704.0864,
title = {Redshifts of the Long Gamma-Ray Bursts},
author = {Z. Bagoly and I. Csabai and A. Meszaros and P. Meszaros and I. Horvath and L. G. Balazs and R. Vavrek},
journal= {arXiv preprint arXiv:0704.0864},
year = {2007}
}
Comments
published in Baltic Astronomy