Polarimetric observations of GRB 011211

Details Polarimetric observations of GRB 011211 Polarimetric observations of GRB 011211

2002-07-16

arxiv.org/abs/astro-ph/0207335v2

Astron.Astrophys.392:865-868,2002

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, 1 table; uses aa.cls (now included). Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20021025

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.

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