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GCN Circular 26474

Subject
LIGO/Virgo S191216ap: IceCube event: MASTER OF detection in GW and Neutrino error field
Date
2019-12-17T14:14:26Z (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),

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)

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),


During a MASTER-net  inspect of LIGO/Virgo S191216ap (Lipunov et al., GCN 
26457)   MASTER-Amur robotic telescope  (Global MASTER-Net: 
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, 
vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical 
University) started inspect of the LIGO/Virgo S191216ap  IceCube  neutrino 
counterpart  errorbox (GCN 26460,26463)   41727 sec after trigger time at 
2019-12-17 09:17:25 UT, with upper limit up to  17.4 mag. Observations 
started at twilight.  The observations began at zenith distance = 50 deg. 
The sun  altitude  is -16.2 deg.

MASTER-Tunka robotic telescope  located in Russia (Applied Physics 
Institute, Irkutsk State University) started inspect of the LIGO/Virgo 
S191216ap  IceCube  neutrino counterpart   errorbox  44823 sec after 
trigger time at 2019-12-17 10:09:01 UT, with upper limit up to  19.0 mag. 
Observations started at twilight.  The observations began at zenith 
distance = 50 deg. The sun  altitude  is -10.0 deg.

MASTER OF J212806.11+023221.9s - Optical Flare known CV.

MASTER-Tunka auto-detection system ( Lipunov et al., "MASTER Global 
Robotic Net", Advances in Astronomy, 2010, 30L )
  discovered OF at  (RA, Dec) = 21h 28m 06.11s +02d 32m 21.9s on 
2019-12-17.43984 UT.

This flash falls off with the position of the famous CV CSS 151110: 212806 
+ 023221 (U Gem type).

The OT magnitude in 'C' filter is 17.0m
(mlim18.3=).

The OT is seen in 2 images. There is no minor planet at this place.

We have reference image on 2010-08-29.64730 UT with  unfiltered mlim= 
18.8m.

Spectral observations are required.


Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1228593

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