{
  "bibcode": "2017GCN.22244....1K",
  "body": "A.Kozlova, S. Golenetskii, R. Aptekar, D. Frederiks, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 171210A\n(Fermi-LAT detection: Bissaldi et al., GCN 22228,\nFermi-GBM observation: Poolakkil et al., GCN 22233)\ntriggered Konus-Wind at T0=42556.704 s UT (11:49:16.704).\n\nThe burst light curve shows a single pulse\nstarted at ~T0-6.1 s with a total duration of ~186.6 s.\nThe emission is seen up to ~10 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 1.15(-0.10,+0.11)x10^-4 erg/cm2,\nand a 64-ms peak flux, measured from T0+2.816 s,\nof 7.85(-1.73,+1.79)x10^-6 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+140.544 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 = -0.76(-0.13,+0.15),\nthe high energy photon index beta = -2.42(-0.21,+0.14),\nthe peak energy Ep = 158(-14,+16) keV\n(chi2 = 99/88 dof)\n\nThe spectrum near the maximum count rate\n(measured from T0+0.256 to T0+5.376 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 = -0.64(-0.09,+0.11),\nthe high energy photon index beta = -2.83(-1.36,+0.40),\nthe peak energy Ep = 426(-46,+46) keV\n(chi2 = 70/79 dof)\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB171210_T42556/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 22244,
  "createdOn": 1513083510000,
  "email": "ann_kozlova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 171210A",
  "submitter": "Anna Kozlova at Ioffe Institute  <ann_kozlova@mail.ioffe.ru>",
  "eventId": "GRB 171210A"
}