Polarization Evolution of the GRB 020405 Afterglow
Astrophysics
2009-11-07 v1
Abstract
Polarization measurements for the optical counterpart to GRB 020405 are presented and discussed. Our observations were performed with the VLT-UT3 (Melipal) during the second and third night after the gamma-ray burst discovery. The polarization degree (and the position angle) appears to be constant between our two observations at a level around (1.5 - 2)%. The polarization can be intrinsic but it is not possible to unambiguously exclude that a substantial fraction of it is induced by dust in the host galaxy.
Cite
@article{arxiv.astro-ph/0211245,
title = {Polarization Evolution of the GRB 020405 Afterglow},
author = {S. Covino and D. Malesani and G. Ghisellini and D. Lazzati and S. di Serego Alighieri and M. Stefanon and A. Cimatti and M. Della Valle and F. Fiore and P. Goldoni and N. Kawai and G. L. Israel and E. Le Floc'h and I. F. Mirabel and G. Ricker and P. Saracco and L. Stella and G. Tagliaferri and F. M. Zerbi},
journal= {arXiv preprint arXiv:astro-ph/0211245},
year = {2009}
}
Comments
4 pages, 3 color figures, accepted for publication in A&A Letters. Contains aa.cls