[vsnet-grb-info 10530] GRB 110422A: MASTER earlier OT polarization observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sat Apr 23 06:09:58 JST 2011
TITLE: GCN CIRCULAR
NUMBER: 11960
SUBJECT: GRB 110422A: MASTER earlier OT polarization observations
DATE: 11/04/22 21:09:53 GMT
FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc at observ.inetcomm.ru>
O. Gres, K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev, O.Chuvalaev
Irkutsk State University
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina,
N.Shatskiy, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M.
Kornilov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, A.Sankovich
Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov
Ural State University, Kourovka
V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina
Blagoveschensk Educational State University, Blagoveschensk
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in Tunka (Baykal lake) was pointed to the GRB 110422A 34 sec
after notice time and 53 sec after GRB time at 2011-04-22 15:42:48.507 UT.
On our first (10s exposure) double set we found optical transient
within SWIFT error-box (Palmer et al.11959). The position coincided with
Elunko et al. GCN 11958.
The polarizated magnitude in R band is ~16.5+-0.4 .
We see OT on all next images in both polarizations.
Is seems some brightenning during first minutes.
The reduction is continuated.
The message may be cited.
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