{
  "bibcode": "2011GCN.12270....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin,\nP. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf\nof the Konus-Wind team, report:\n\nThe short-duration extremely hard GRB 110808A\n(localized by IPN: Hurley et al., GCN 12269)\ntriggered Konus-Wind at T0=56695.237s UT (15:44:55.237)\n\nThe burst light curve shows a single bright hard pulse,\nwith a duration of ~0.5 s and much weaker tail of\nthe emission which is detectable till T0+8 s.\nThe emission is seen up to 13 MeV.\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB110808_T56695/\n\nAs observed by Konus-Wind the burst\nhad a fluence of (1.6 � 0.2)x10-5 erg/cm2,\nand a 16-ms peak flux, measured from T0+0.112 s,\nof (1.1 � 0.2)x10-4 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe spectrum of the burst (measured from T0 to T0+0.256 s)\nis best fitted in the 20 keV - 10 MeV range\nby a power law with exponential cutoff model, for which\nalpha = -1.13 (-0.08, +0.08),\nand Ep = 2960(-796, +1217) keV,\nchi2 = 53.2/45 dof.\nFitting this spectrum by the GRB (Band) function yields\nthe following model parameters:\nthe low-energy photon index alpha = -1.13 (-0.08, +0.07),\nthe high energy photon index beta = -2.5 (<-1.9),\nthe peak energy Ep = 2630(-744, +836) keV,\nchi2 = 54.3/44 dof.\n\nThe spectrum at the maximum count rate\n(measured from T0+0.064 to T0+0.128 s)\nis best fitted in the 20 keV - 10 MeV range\nby a power law with exponential cutoff model, for which\nalpha = -1.07 (-0.11, +0.12),\nand Ep = 4238(-1530, +3270) keV,\nchi2 = 12.5/16 dof.\n\nAll the quoted results are preliminary.\nAll the quoted errors are at the 90% confidence level.",
  "circularId": 12270,
  "createdOn": 1313058642000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 110808A",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 110808A"
}