Polarimetric observations of GRB 011211
Astrophysics
2008-11-26 v2
Abstract
We present and discuss polarimetric observations performed with the VLT-UT3 (Melipal) on the afterglow of GRB 011211, ~35 hours after the burst onset. The observations yielded a 3-sigma upper limit of P<2.7%. We discuss this result in combination with the lightcurve evolution, that may show a break approximately at the time of our observation. We show that our upper limit is consistent with the currently favored beamed fireball geometry, especially if the line of sight was not too close to the edge of the cone.
Cite
@article{arxiv.astro-ph/0207335,
title = {Polarimetric observations of GRB 011211},
author = {S. Covino and D. Lazzati and D. Malesani and G. Ghisellini and G. L. Israel and L. Stella and A. Cimatti and S. di Serego and F. Fiore and N. Kawai and S. Ortolani and L. Pasquini and G. Ricker and P. Saracco and G. Tagliaferri and F. M. Zerbi},
journal= {arXiv preprint arXiv:astro-ph/0207335},
year = {2008}
}
Comments
5 pages, 4 figures, 1 table; uses aa.cls (now included). Accepted for publication in A&A