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GCN Circular 18804

Subject
LIGO/Virgo G211117: MASTER OTs 26.XII.2015 - 01.I.2016
Date
2016-01-02T15:03:27Z (9 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov2007@gmail.com>
V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, P.Balanutsa, A.Kuznetsov 
Lomonosov Moscow State University, Sternberg Astronomical Institute

D.Buckley, S. Potter, M. Kotze South African Astronomical Observatory

R. Rebolo, M. Serra-Ricart, G. Israelian, N.Lodiu
The Instituto de Astrofisica de Canarias

A. Tlatov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory

N.M. Budnev, O. Gress, K. Ivanov
Irkutsk State University

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


We covered northern and small part of the southern segment of 
LIGO/Virgo G211117 (~ 77.8% of the total probability and 99.3% of 
the Northen segment)) by MASTER-IAC, MASTER-SAAO, MASTER-Amur, 
MASTER-Tunka and MASTER-Kislovodsk) several times.

The covering map is available at
  http://master.sai.msu.ru/static/OT/G211117_master2.png

The map of image limits is available at
   http://master.sai.msu.ru/static/OT/G211117.png

Below you can find the results of the week observations possible 
Gravitational 
Wave Burst LIGO/Virgo G211117 by MASTER Global Net:


1). MASTER OT J020906.21+013800.1  - possible OT in PGC Galaxy.

  Lipunov et al.,  GCN #18729Loading...
 
    https://gw-astronomy.org/circs/18729.lvc3
  D'Avanzo et al., GCN #18775Loading...
 
    https://gw-astronomy.org/circs/18775.lvc3
  I.Steele         GCN #18782Loading...
 
    https://gw-astronomy.org/circs/18782.lvc3

2). MASTER OT J034313.67+320044.9  - 19.0m   flare young star is 
not connected with LIGO/Virgo G211117 event.

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 03h 43m 
13.67s +32d 00m 44.9s on 2015-12-29.94159 UT.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/034313.67320044.9.png

3). MASTER OT J025756.02+285337.6  (PS15dpa, Smit et al., GCN 18786Loading...
 
 ) - 
19.5 mag PSN in SDSS9 galaxy

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 02h 57m 
56.02s +28d 53m 37.6s on 2015-12-31.97184 UT.
The OT unfiltered magnitude is 19.5m (limit 20.3m).
The OT is seen in 9 images.
We have reference image without OT on 2015-11-09.06204 UT with unfiltered 
magnitude limit 20.6m. There are 3 SDSS9 galaxies:

     J025756.06+285337.9 galaxy with offset 0.7 arcsec.
     J025756.14+285339.5 galaxy with offset 2.5 arcsec.
     J025755.75+285339.7 galaxy with offset 4.1 arcsec.

Spectral observations are required. But its seems very far for Gravitational 
Wave Source.

The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/025756.02285337.6.png

4). MASTER OT J150113.71-734333.8 discovery - bright (14.5) high amplitude 
(>7.5mag) outburst. Dwarf Nova?

MASTER-SAAO auto-detection system 
(http://www.astronomerstelegram.org/?read=8472 ) discovered OT source at (RA, 
Dec) = 15h 01m 13.71s -73d 43m 33.8s on 2015-12-25.016 UT. The OT unfiltered 
magnitude is 14.5m (the limit was 18.0m).

5). MASTER OT J142741.38-330531.7 discovery - 14.9 flare BLAZAR with 
Gamma-ray 
counterpart  2 hours before  trigger ( 
http://www.astronomerstelegram.org/?read=8472 )

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 14h 27m 
41.38s -33d 05m 31.7s on 2015-12-26.07199 UT.
The OT unfiltered magnitude is 14.9m (limit 17.7m).
We have reference image without OT on 2015-01-19.07569 UT with unfiltered 
magnitude limit 19.4m.

The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/142741.38-330531.7_1.png


6.) MASTER OT J012034.47-042003.6 possible  detection - 19.8 posible OT in 
SDSS9 galaxy, but its very far for GWB.

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 01h 20m 
34.47s -04d 20m 03.6s on 2016-01-01.86469 UT.
The OT unfiltered magnitude is 19.8m (limit 20.5m).

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

We have reference image without OT on 2015-09-14.17252 UT with unfiltered 
magnitude limit 21.2m.
There is SDSS9 J012034.29-042001.9 galaxy with 3 arc sec offset.

Spectral observations are required.
The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/012034.47-042003.6.png


7). MASTER OT J201539.32-693614.7 - Dwarf Nova (no coonection with GWB).

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 20h 
15m 39.32s -69d 36m 14.7s on 2016-01-01.79416 UT.
The OT unfiltered magnitude is 17.9m (limit 19.5m).


We have reference image without OT on 2016-01-01.78390 UT with unfiltered 
magnitude limit 18.6m.

Spectral observations are required.

The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/201539.32-693614.7.png

The map of our OTs is vailable at
    http://master.sai.msu.ru/static/OT/G211117.png


THis circular can be cited.