Long gamma-ray bursts without visible supernovae: a case study of redshift estimators and alleged novel objects
Astrophysics
2010-11-11 v4
Abstract
It has been argued that the observational limits on a supernova (SN) associated with GRB060614 convincingly exclude a SN akin to SN1998bw as its originator, and provide evidence for a new class of long-duration GRBs. We discuss this issue in the contexts of indirect 'redshift estimators' and of the fireball and cannonball models of GRBs. The latter explains the unusual properties of GRB060614: at its debated but favoured low redshift (0.125) they are predicted, as opposed to exceptional, if the associated core-collapse SN is of a recently discovered, very faint type. We take the occasion to discuss the 'association' between GRBs and SNe.
Cite
@article{arxiv.astro-ph/0611161,
title = {Long gamma-ray bursts without visible supernovae: a case study of redshift estimators and alleged novel objects},
author = {Shlomo Dado and Arnon Dar and A. De Rujula and Rainer Plaga},
journal= {arXiv preprint arXiv:astro-ph/0611161},
year = {2010}
}
Comments
19 pages, 2 figures. To be published in ApJ