{
  "bibcode": "2015GCN.17956....1I",
  "body": "K.Ivanov, O.Gres, N.M.Budnev, S.Yazev, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nV.Krushinski, I.Zalozhnih,  A. Popov\nUral Federal University, Kourovka\n\nE. Gorbovskoy, V. Lipunov,  N.Tyurina, V.Kornilov, P.Balanutsa, \nA.Kuznetsov, E.Popova, D.Kuvshinov,\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nRafael Rebolo, Miquel Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\n(The Instituto de Astrofisica de Canarias)\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov, A.Gabovich\nBlagoveschensk Educational State University, Blagoveschensk\n\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nCarlos Lopez, Claudio Mallamaci and Federico Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nMASTER-Tunka was pointed to the V404 Cyg 36 sec after notice time , 164 \nsec after Swift trigger  N 643949 (Barthelmy et. al GCN #17929 )time at \n2015-06-15 18:34:23 UT. MASTER-Ural was pointed to the V404 Cyg 22 sec\nafter notice time , 150   sec after swift trigger N 643949 (Barthelmy et. \nal GCN #17929 ) time at 2015-06-15 18:34:09 UT.\nThe 5 MASTER (http://observ.pereplet.ru  , Lipunov et al.2010, Advances in \nAstronomy, vol. 2010, pp. 1-7) robotic twin telescopes every clear night \nobserved V404 Cyg by Integral alerts sending ( Erik Kuulkers, ATel #7695).\n\n\n\n  Site          DATE  UT Start         DATE  UT Finish    Exp  Duration    Polarisation\n\n  Tunka      2015-06-15 18:34:23    2015-06-15 19:33:48   40    1.0 h         |-\n2 Ural      2015-06-15 18:34:09    2015-06-15 19:42:09   10    1.1 h         /\\\n3 IAC       2015-06-18 00:09:07    2015-06-18 05:26:19  190    5.2 h         |-\n4 Tunka     2015-06-18 14:45:47    2015-06-18 19:44:43   96    5.0 h         |-\n5 Kisl      2015-06-18 18:50:29    2015-06-19 00:34:30  176    5.4 h         |-\n6 SAAO      2015-06-18 22:19:33    2015-06-19 04:42:30  282    6.5 h         \\/\n7 Tunka     2015-06-19 14:21:47    2015-06-19 19:12:1    90    4.9 h         |-\n8 Kisl      2015-06-19 18:08:38    2015-06-19 22:02:20  108    3.1 h         |-\n9 SAAO      2015-06-19 21:26:05    2015-06-20 04:41:46  318    7.3 h         \\/\n10 Tunka    2015-06-20 16:07:32    2015-06-20 19:33:50   59    3.5 h         |-\n11 Kisl     2015-06-20 17:55:38    2015-06-20 20:24:19   36    3.5 h         |-\n12 SAAO     2015-06-20 21:59:20    2015-06-21 04:43:37  320    6.7 h         \\/\n13 Tunka    2015-06-21 19:04:51    2015-06-21 19:36:31   26    0.5 h         |-\n14 SAAO     2015-06-21 21:16:36    2015-06-22 04:43:06  320    7.5 h         \\/\n15 Kisl     2015-06-21 21:30:56    2015-06-22 00:36:31   78    3.0 h         |-\n16 SAAO     2015-06-22 21:15:28    2015-06-23 04:43:58  260    7.5 h         \\/\n\nWe have more than 2400 mesuarments now; The preliminary photometry of \nMASTER-Net telescopes are available at \nhttp://master.sai.msu.ru/static/OT/MASTERV404.jpg\n\nWe see > 8% linear polarisation ( that corresponds to ATEL #7678 , ATEL \n#7674). We defenitely detect polatizations variability at time scale ~10 \nminutes.\n\nThe Ural light curves (upper fig.) VS polarization (below) data are \navailable at http://master.sai.msu.ru/static/v404syg_tu.png\n\nThe observations are continued.\n\nThe message may be cited.",
  "circularId": 17956,
  "createdOn": 1435064197000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "V404 Cyg: MASTER Swift, Integral alert observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>"
}