[vsnet-grb-info 16777] Swift IGR J00291+5934: MASTER Optical flare detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18058
SUBJECT: Swift IGR J00291+5934: MASTER Optical flare detection 
DATE:    15/07/24 16:46:47 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

---------- Forwarded message ----------
Date: Fri, 24 Jul 2015 19:44:33 +0300 (MSK)
From: Lipunov V.M. <lipunov at xray.sai.msu.ru>
To: gcncirc at capella.gsfc.nasa.gov
Subject: IGR J00291+5934: Optical flare detection


R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias


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


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


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

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

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

V.Krushinski, I.Zalozhnih
Ural Federal University, 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 
IAC was pointed to the  IGR J00291+5934 (Cummings et al., GCN 18051) 24 sec 
after notice time and 1103 sec after trigger time at
2015-07-24 05:42:03 UT. On our first (180s exposure)  set we haven`t found 
optical transient  within SWIFT error-box.
The 5-sigma upper limit has been about 17.2 mag

MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in 
Tunka was pointed to the  IGR J00291+5934 Swift Trigger  35223 sec after notice 
time and 36279 sec after trigger time at 2015-07-24 15:28:16 UT. On our first 
(180s exposure)  set we  found 1 optical transient within Swift error-box ~ 
17.5 unfileterd mag (CCD is red, m=0.2B+0.8R with respect to USNO B ).
The 5-sigma upper limit has been about 19.4 mag .

The message may be cited.