[vsnet-grb-info 15385] GRB 140809A (FERMI trigger 429246673): MASTER follow-up inspection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16674
SUBJECT: GRB 140809A (FERMI trigger 429246673): MASTER follow-up inspection
DATE:    14/08/09 19:47:19 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc at observ.inetcomm.ru>

V.Shumkov,  D.Denisenko, E. Gorbovskoy, V. Lipunov,
M.Pruzhinskaya, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,
A.Kuznetsov, V.V.Chazov
Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University


K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University

V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk

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

V.Krushinsky, I.Zalozhnih,  A. Popov
Ural Federal University, Yekaterinburg, Kourovka

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 Kislovodsk was starting survey on the FERMI  GRB140809A 
error-box (ra=11 15 14 dec=+71 00 36 r=6.040000)  52916 sec after trigger 
time at 2014-08-09 17:53:06 UT.

  During the observations of the error box of possible GRB 140809A (Fermi 
trigger 429246673) MASTER-Tunka auto-detection system discovered OT source 
at (RA, Dec) = 11h 46m 55.24s +66d 09m 59.3s on 2014-08-09.63454 UT ( 
Shumkov et al., Atel #6379). The 
OT unfiltered magnitude is 17.0m (limit 19.1m). The OT is seen in 6 
images. There is no minor planet at this place. We have reference image 
without OT on 2014-04-21.58762 UT with unfiltered magnitude limit 20.0m.

The new object is located 1.5" east and 17" north of the center of galaxy 
PGC 36760 = SDSS J114654.97+660942.3 (g=15.34 r=14.73 i=14.42) with 
z=0.0413. Discovery and reference images are available at: 
http://master.sai.msu.ru/static/OT/114655.24660959.3.png

It is   just a chance coincidence possible. Spectral and photometric 
confirmation is requested. Observations in X-rays and other wave bands are 
also strongly encouraged.

The OT search is continuated.

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