{
  "bibcode": "2019GCN.24338....1L",
  "body": "V. Lipunov, N.Tyurina, E. Gorbovskoy, V.Kornilov, D.Vlasenko, V.Vladimirov, \nD.Zimnukhov, A.Kuznetsov, P.Balanutsa, I.Gorbunov, A. Chasovnikov, \nV.Grinshpun, F.Balakin, A.Chasovnikov (Lomonosov Moscow State University, SAI, \nPhysics Department),\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The \nInstituto de Astrofisica de Canarias),\n\nR. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico  Felix \nAguilar OAFA, San Juan National University),\n\nH.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio \nICATE,SJNU)\n\nD. Buckley (South African Astronomical Observatory),\n\nO. Gress, N.M. Budnev, O.Ershova (Applied Physics Institute, Irkutsk State \nUniversity),\n\nV. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk EducationState \nUniversity),\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar  Station \nof the Pulkovo Observatory),\n\nGlobal MASTER-Net (http://observ.pereplet.ru, Lipunov et al., 2010, Advances in \nAstronomy, vol. 2010, 30L)   started inspect of the LIGO/Virgo S190425z \nerrorbox (Singer et al. GCN 24168) 3133 sec after trigger time at 2019-04-25 \n09:10:18 UT  (Lipunov et al. GCN 24167).\n\nAfter reviewing 25% of total probability, we found several possible \ntransients. The most interesting is the MASTER OT J155829.22+271714.6.\nMost likely this flash is related to the activity of the galaxy nuclear. \nToo large  redshift s = 0.09 (distance ~380 Mpc) excludes OT from possible \ncandidates for a gravitational-wave event LIGO/Virgo S190425z.\n\n\nMASTER OT J155829.22+271714.6  - Optical Flare in Active Seyfert Galaxy\n\n\nMASTER-IAC (Teide Observatory, IAC, Tenerife, Spain) auto-detection system \ndiscovered OT source at (RA, Dec) = 15h 58m 29.22s +27d 17m 14.63s\n2019-04-25 23:42:39.4 UT.\nThe OT unfiltered magnitude is 18.4m (limit 19.7 m).\n  There is no minor planet at this place.\nThe discovery, referenceand differences images are available at\nhttp://observ.pereplet.ru/images/MASTEROTJ155829.22+271714.6.jpg\n\nThe message may be cited.",
  "circularId": 24338,
  "createdOn": 1556523427000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "LIGO/Virgo S190425z: MASTER detection of the faint flare in SDSS Seyfert  galaxy z = 0.09",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "LIGO/Virgo S190425z"
}