[vsnet-grb-info 14115] GRB 131031A: MASTER optical observation
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Nov 1 19:36:41 JST 2013
TITLE: GCN CIRCULAR
NUMBER: 15429
SUBJECT: GRB 131031A: MASTER optical observation
DATE: 13/11/01 10:36:33 GMT
FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc at observ.inetcomm.ru>
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina,
N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov,
D.Denisenko, A.Sankovich
Sternberg Astronomical Institute, Moscow State University
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University
V.Krushinski, I.Zalozhnih, A. Popov
Ural Federal University, Kourovka
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory
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 GRB131031A 11 s after notice
time and 51 s after GRB time at 2013-10-31 11:34:23UT by FERMI trigger
N404912015.
Using very wide field cameras (FOV=2x384 square degrees, D=72mm, f/1.2, 1
pix = 22 arcsec), we cover Swirt error box (Cummings et al. GCN15421).
The 5-sigma upper limit has been about 11 mag on single 5 sec image and
12.5 on coaad of 12 continuously images with total exposure 60 sec.
On 40-cm MASTER-II telescope with FOV 4 sq. degree look at a center
of FERMI GBM error box (ra=01 47 16 dec=+00 33 34 r=2.3) and not cover
Swirt error box .
The message may be cited.
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