{
  "bibcode": "2015GCN.18259....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. \nUlanov, D. Svinkin, A. Tsvetkova, A.Lysenko, A.Kozlova, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe short-duration, hard-spectrum  GRB 150906B\n(IPN triangulation:  Hurley, et al., GCN 18258)\ntriggered Konus-Wind at 31340.560 s UT (08:42:20.560).\n\nThe KW light curve shows a single, multi-peaked pulse\nwith a duration of ~2 s.\nThe emission is visible up to ~10 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB150906_T31340/\n\nAs observed by Konus-Wind, the burst had a fluence\nof 2.8(-0.2,+0.2)x10^-5 erg/cm2, and a 16-ms peak flux,\nmeasured from T0+1.488 s, of 2.9(-0.3,+0.3)x10^-5 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-averaged spectrum (measured from T0 to T0+8.448 s)\nis best fit in the 20 keV - 15 MeV range\nby the cutoff power law with the following model parameters:\nthe photon index alpha = -0.43(-0.11,+0.12),\nand the peak energy Ep = 928(-95,+111) keV,\nchi2 = 93/94 dof.\nFitting this spectrum with the GRB (Band) function yields\nthe same alpha and Ep with an upper limit on beta of -2.8\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 18259,
  "createdOn": 1441735965000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 150906B",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 150906B"
}