{
  "bibcode": "2015GCN.18718....1G",
  "body": "O. Gress, K. Ivanov, N.M. Budnev, V.A. Poleshchuk, S.A. Yazev\nIrkutsk State University\n\nE. Gorbovskoy, V. Lipunov, N.Tyurina, D. Vlasenko, V.Kornilov, \nP.Balanutsa,A.Kuznetsov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nV.Yurkov, Yu.Sergienko, A.Gabovich, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nWe reported about V404 Cyg optical detection by MASTER-Amur (Yurkov et \nal., GCN 18717) after Swift BAT alert ( Barthelmy et al.,  18716).\n\nMASTER-Tunka starts alert observations of V404 at 2015-12-23 10:16:20 UT \n(just after the sunset, 17447 sec after notice time and 17787 sec after \ntrigger time).\n  There is fast about half-magnitude variability at the interval about \n10min time scale.\n\nPreliminary LC is available at \nhttp://master.sai.msu.ru/static/v404_23dec2015.png\n\n\n  The message may be cited.",
  "circularId": 18718,
  "createdOn": 1450874656000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "V404Cyg Swift Trigger 668097: MASTER-Tunka optical wake up detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>"
}