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GCN Circular 26264

Subject
LIGO/Virgo S191120aj: Global MASTER-Net observations report
Date
2019-11-20T16:50:00Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, 
A.Kuznetsov, F.Balakin,
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, 
D.Kuvshinov
(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),

H.Levato
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),

D. Buckley
(South African Astronomical Observatory),

O.A. Gres, N.M. Budnev, O.Ershova
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko
(Blagoveschensk Educational State University)




MASTER-Kislovodsk robotic telescope  (Global MASTER-Net: 
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, 
vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar 
Station of Pulkovo observatory) started inspect of the LIGO/Virgo 
S191120aj errorbox  572 sec after notice time and 1096 sec after trigger 
time at 2019-11-20 16:41:50 UT, with upper limit up to  19.0 mag. The 
observations began at zenith distance = 73 deg. The sun  altitude  is 
-32.4 deg.

The galactic latitude b = 66 deg., longitude l = 45 deg.


Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/ligo_1.php?id=10927

We obtain a following upper limits.

Tmid-T0  |      Date Time      |          Site       |             Coord 
(J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     1186 | 2019-11-20 16:41:50 |   MASTER-Kislovodsk | (16h 14m 13.05s ,  +41d 52m 15.3s) |   C |   180 | 18.4 |
     1186 | 2019-11-20 16:41:50 |   MASTER-Kislovodsk | (16h 03m 31.42s ,  +42d 17m 44.2s) |   C |   180 | 19.0 |
Filter C is a clear (unfiltred) band.


The observation and reduction will continue.
The message may be cited.
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