{
  "bibcode": "2019GCN.26613....1S",
  "body": "D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks,\nM. Ulanov, A. Tsvetkova, A. Lysenko, A. Ridnaia, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe short-duration GRB 191227B\n(IPN triangulation: Hurley et al., GCN Circ. 26612)\ntriggered Konus-Wind at T0=62500.487 s UT (17:21:40.487).\n\nThe burst light curve shows a multi-peaked structure\nwhich starts at ~T0 s and has a total duration of ~0.2 s.\nThe emission is seen up to ~10 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB191227_T62500/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 8.80(-1.42,+1.40)x10^-6 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.030 s,\nof 8.83(-2.12,+2.10)x10^-5 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-averaged spectrum of the burst\n(measured from T0 to T0+0.192 s)\nis best fit in the 20 keV - 10 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.56(-0.21,+0.31),\nthe high energy photon index beta = -2.35(-1.19,+0.38),\nthe peak energy Ep = 985(-323,+373) keV\n(chi2 = 49/49 dof).\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 26613,
  "createdOn": 1577710569000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 191227B",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 191227B"
}