{
  "bibcode": "2019GCN.25558....1L",
  "body": "V. Lipunov, F.Balakin,  E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, \nA.Kuznetsov, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik,\nT.Pogrosheva,  D.Kuvshinov\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nH.Levato\n(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\n(Blagoveschensk Educational State University)\n\n\nMASTER-Kislovodsk robotic telescope  (Global MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar \nStation of Pulkovo observatory) was pointed to the SWIFT GRB190829.83 \n(trigger No 922968,Dichiara et al GCN 25552) errorbox \n1215 sec after notice time and 1239 sec after trigger time at 2019-08-29 \n20:17:23 UT, with upper limit up to  18.6 mag. The observations began at \nzenit distance = 89 deg. The sun  altitude  is -36.2 deg.\n\nMASTER-SAAO robotic telescope  located in South Africa (South African \nAstronomical Observatory) was pointed to the SWIFT GRB190829.83 errorbox \n1215 sec after notice time and 6757 sec after trigger time at 2019-08-29 \n21:49:21 UT, with upper limit up to  17.3 mag. The observations began at \nzenit distance = 76 deg. The sun  altitude  is -64.5 deg.\n\nMASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI \nCrimea astronomical station) was pointed to the SWIFT GRB190829.83 \nerrorbox  1215 sec after notice time and 6766 sec after trigger time at \n2019-08-29 21:49:30 UT, with upper limit up to  16.4 mag. The observations \nbegan at zenit distance = 79 deg. The sun  altitude  is -36.7 deg.\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id=1119490\n\nMASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) \n= 02h 58m 10.51s -08d 57m 27.2s on 2019-08-29.86841 UT.\nThe OT unfiltered magnitude is 14.9m (limit 17.2m).\n\nThe OT is seen in 12 images.\nThe OT decay on ~2 magnitudes  during first 2 hours of observations. \nSo this OT could be a GRB 190829A optical counterpart.\n\nWe have reference image without OT on 2014-11-20.85262 UT with unfiltered \nmagnitude limit 20.7m.",
  "circularId": 25558,
  "createdOn": 1567118155000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 190829A:: MASTER-net bright and decay OT detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 190829A"
}