{
  "bibcode": "2011GCN.12627....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 long hard intense GRB 111205A (localized by IPN: Hurley et al., GCN \n12626) triggered Konus-Wind at T0=47450.301 s UT (13:10:50.301)\n\nThe light curve starts with a hard bright ~20 s long pulse\nfollowed by a weaker tail of softer emission.\nA total duration of the burst is ~85 s.\nThe emission is seen up to ~8 MeV.\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB111205_T47450/\n\nAs observed by Konus-Wind the burst\nhad a fluence of (1.7 � 0.1)x10^-4 erg/cm2,\nand a 64-ms peak flux, measured from T0+1.024 s,\nof (2.2 � 0.25)x10^-5 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum of the burst (measured from T0 to T0+80.384 \ns) is best fitted in the 20 keV - 10 MeV range\nby a power law with exponential cutoff model, for which\nalpha = -0.82 (-0.04, +0.04),\nand Ep = 998 (-70, +77) keV,\nchi2 = 98.0/85 dof.\nFitting by GRB (Band) model yields the same alpha and Ep,\nand only an upper limit on the high energy\nphoton index: beta < -2.86 (chi2 = 97.2/84 dof).\n\nThe spectrum at the maximum count rate (measured from T0 to T0+4.352 s)\nis best fitted in the 20 keV - 10 MeV range\nby a power law with exponential cutoff model, for which\nalpha = -0.35 (-0.05, +0.05),\nand Ep = 1120 (-57, +60) keV,\nchi2 = 68.8/85 dof.\n\n\nAll the quoted results are preliminary.\nAll the quoted errors are at the 90% confidence level.",
  "circularId": 12627,
  "createdOn": 1323283722000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 111205A",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 111205A"
}