GCN Circular 13848
Subject
GRB 121011A: MASTER-Net early OT light curve
Date
2012-10-11T13:10:07Z (12 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina,
N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, A.Sankovich,
D.Denisenko
Moscow Lomonosov State University, Sternberg Astronomical Institute,
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinski, I.Zalozhnich, A. Popov, A. Bourdanov, A. Punanova
Ural Federal University
Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in Blagoveschensk was pointed to the GRB121011.47 10 sec s after
notice time and 51 sec after GRB time at 2012-10-11 11:16:21.301 UT in
two polarizations.
The 5-sigma upper limit of the first (10s exposure) set has been about
17.0 mag
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in Tunka was pointed to the GRB 121011A 65 sec s after notice
time and 106 sec after GRB time at 2012-10-11 11:17:14 UT in two
polarizations. On our first
(10s exposure) set we haven't found optical transient within SWIFT
error box. The weather conditions were not very good.
The first individual image on which we see the OT was taken on 2012-10-11
at 11:19:20, i.e 230 sec. after the GRB time. The maximum brightness
(calibrated to 0.8*R+0.2*B from USNO-B1.0) was 16.1.
The preliminary light curve is available here:
http://master.sai.msu.ru/static/GRB/GRB121011_pre_lc.png
We note that nothing is visible at the position of the OT on the Palomar
DSS plates and on color-combined SDSS image, implying the host galaxy is
fainter than 22.5 m.
The reduction of the whole data set is continuing.
This message can be cited.
