{
  "bibcode": "2017GCN.21767....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 170826B (Fermi GBM observation: Poolakkil\net al., GCN 21717; Insight-HXMT detection: Li et al., GCN 21739;\nIPN Triangulation: Hurley et al., GCN 21753)\ntriggered Konus-Wind at T0=70742.555 s UT (19:39:02.555).\n\nThe burst light curve shows a multipeaked structure\nwhich starts at ~T0-3.9 s and has a total duration of ~23.6 s.\nThe emission is seen up to ~10 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 5.70(-0.53,+0.53)x10^-5 erg/cm2,\nand a 64-ms peak flux, measured from T0+1.728 s,\nof 1.62(-0.29,+0.30)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+14.592 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 = -0.73(-0.14,+0.15),\nthe high energy photon index beta = -2.12(-0.14,+0.10),\nthe peak energy Ep = 261(-32,+46) keV\n(chi2 = 87/83 dof).\n\nThe spectrum near the maximum count rate\n(measured from T0+0.256 to T0+6.400 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 = -0.54(-0.19,+0.20),\nthe high energy photon index beta = -2.05(-0.13,+0.09),\nthe peak energy Ep = 259(-36,+53) keV\n(chi2 = 99/83 dof).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB170826_T70742/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 21767,
  "createdOn": 1504105524000,
  "email": "ann_kozlova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 170826B",
  "submitter": "Anna Kozlova at Ioffe Institute  <ann_kozlova@mail.ioffe.ru>",
  "eventId": "GRB 170826B"
}