{
  "bibcode": "2014GCN.15879....1L",
  "body": "V. Lipunov, M. Pruzhinskaya, E. Gorbovskoy, D.Denisenko, V.Kornilov, \nN.Tyurina, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D.Kuvshinov\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Krushinski, I.Zalozhnih,  A. Popov\nUral Federal University, Kourovka\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nClaudio Mallamaci, Carlos Lopez and Federico Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nWe refined our reduction of images started 18h 22m after trigger time \n(Gorbovskoy et al., GCN 15871). We  found  the 3-sigma OT on several (at \nleast 4) best unfiltered images with limit ~ 20 mag inside XRT error box \n(Mangano  and Evans, GCN 15875) at automatic position:\n\n\n2014-02-20 14:08:50.873 \t10h 24m 06.46s , +06d 29m 40s.8\n\nwith 2 arcsec  error (2 arcsec = 1 pix).\n\nThe unfiltered magnitude is about 19.\n\nFortunately we have archive images of this area at the same telescope \nwith slightly better limit(MASTER II, Tunka,2011-02-06 16:34:55 \n180) without any optical source. The OT is brighter at least 1 magnitude \nat 18.5 hours after trigger.\n\nThe OT position does not coincide with  SDSS J102406.58+062945.7 galaxy \n(Singer, iPTF  GCN 15878, source XRT 5), closer to SDSS star\nJ102406.41+062937.6 .\n\nThe detection and reference images are  available at\nhttp://master.sai.msu.ru/static/GRB/GRB140219A_OT.png\n\nWe do not see any OT at alert Very Wide Field images at this place \n(Gorbovskoy et al., GCN 15871).\n\nThe message may be cited.",
  "circularId": 15879,
  "createdOn": 1393171195000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 140219A: MASTER  optical brightening inside  XRT-5 error box detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 140219A"
}