Polarization Evolution of the GRB 020405 Afterglow

Details Polarization Evolution of the GRB 020405 Afterglow Polarization Evolution of the GRB 020405 Afterglow

2002-11-12

arxiv.org/abs/astro-ph/0211245v1

Astron.Astrophys. 400 (2003) L9

Astronomy and Astrophysics

Astrophysics

4 pages, 3 color figures, accepted for publication in A&A Letters. Contains aa.cls

Scientific paper

10.1051/0004-6361:20030133

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.

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