The Jet and the Supernova in GRB990712
Astrophysics
2007-05-23 v1
Abstract
The optical light curve of the afterglow following the gamma-ray burst GRB990712 is re-examined. Recently published polarization measurements of that source require a collimated outflow geometry that in turn predicts a break in the light curve. We show that the V-band light curve is consistent with such a break and that the post-break light curve evolution is dominated by a supernova contribution.
Cite
@article{arxiv.astro-ph/0104174,
title = {The Jet and the Supernova in GRB990712},
author = {G. Bjornsson and J. Hjorth and P. Jakobsson and L. Christensen and S. Holland},
journal= {arXiv preprint arXiv:astro-ph/0104174},
year = {2007}
}
Comments
4 pages, 1 figure, accepted for publication in ApJL