[vsnet-grb-info 20292] GRB 180205A: VLT polarimetry

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22388
SUBJECT: GRB 180205A: VLT polarimetry 
DATE:    18/02/05 19:20:24 GMT
FROM:    Klaas Wiersema at U of Warwick  <K.Wiersema at warwick.ac.uk>

K. Wiersema (Warwick) & S. Covino (INAF / OAB) report on behalf of the
Stargate consortium:

We observed the afterglow of GRB 180205A (Evans et al. GCN 22381; 
Zheng et al. GCN 22382; Bolmer et al. GCN 22383, Tanvir et al. GCN 22384) 
with the ESO Very Large Telescope equipped with FORS2. We obtained
a set of imaging polarimetry observations in R band, starting at 07:07 UT
(approximately 2.67 hours after burst). Using archival calibration data, we 
find a low level of polarisation, P ~ 0.9%, similar to the majority of 
late-time GRB afterglow measurements (Covino & Gotz 2016, A&AT 29, 205). 

We acknowledge excellent support from the ESO staff.