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GCN Circular 20697

Subject
LIGO/Virgo G274296: Global MASTER Net two OTs detection
Date
2017-02-19T08:50:42Z (7 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov2007@gmail.com>
V.M.  Lipunov, P.Balanutsa, V.Shumkov, E. Gorbovskoy,  N.Tyurina,
V.G. O.Gress, Kornilov, A.Kuznetsov, M.I.Panchenko
Lomonosov Moscow State University, Sternberg Astronomical Institute

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

R.Podesta, C.Lopez, F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA) , National University of San
Juan, Argentina

H. Levato, C. Saffe
Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),
San Juan, Argentina

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

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

MASTER-Tunka (Sibiriya, Baykal, -30C)detected two additional OTs during 
LIGO/VIRGO alert inspection  (Peter Shawhan, GCN 20689; Lipunov et al., 
GCN 20696).

MASTER OT J111410.86+383448.2  - AGN.


MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 11h 
14m 10.86s +38d 34m 48.2s on 2017-02-18.77808 UT.
The OT unfiltered magnitude is 18.6m (limit 19.6m).

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

We have reference image without OT on 2011-04-23.66288 UT with unfiltered 
magnitude limit 20.2m.
There is  object SDSS DR10 catalogue of candidate quasars 
(Brescia+, 2015, 2015MNRAS.450.3893B )
Spectral observations are required.

The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/111410.86383448.2.png


MASTER OT J104314.39+241518.4 -  PSN in the SDSS galaxy with ~4 arcsec 
offset.


MASTER-Tunka auto-detection system discovered OT source at (RA, Dec) = 10h 
43m 14.39s +24d 15m 18.4s on 2017-02-18.73677 UT.
The OT unfiltered magnitude is 18.8m (limit 19.3m).

The OT is seen in 1 image. There is no minor planet at this place.

We have reference image without OT on 2011-03-30.69752 UT with unfiltered 
magnitude limit 20.4m.

THERE is SDSS galaxy J104314.36+241522.4 in 4 arcsec from OT.

Spectral observations are required.

The discovery and reference images are available at:

http://master.sai.msu.ru/static/OT/104314.39241518.4.png
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