{
  "bibcode": "2014GCN.16389....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Tsvetkova, A. Lyssenko, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe short/hard GRB 140611A (IPN triangulation: Golenetskii at al., GCN 16384;\nSwift-BAT detection in ground analysis: Cummings, GCN 16386)\ntriggered Konus-Wind at T0=13864.927 s UT (03:51:04.927).\n\nThe burst light curve starts, at ~T0-0.1, with a rise of short,\nbright pulse with a duration of ~0.5 s, followed by a weaker,\nsecond pulse from ~T0-1.5 s to ~T0+2.2 s.\nThe total duration of the burst is ~2.3 s.\nThe emission is seen up to ~5 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 1.5(-0.3,+0.4)x10^-5 erg/cm2,\nand a 64-ms peak flux, measured from T0+0.256 s,\nof 4.5(-0.5,+0.5)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 - 18 MeV range\nby the cutoff power law with the following model parameters:\nthe photon index alpha = -0.68 (-0.18,+0.22),\nand the peak energy Ep = 1460(-360,+520) keV,\nchi2 = 111/98 dof.\nFitting this spectrum with the Band model yields the same\nvalues of alpha and Ep with an upper limit on beta of -2.3.\n\nThe spectrum near the maximum count rate\n(measured from T0 to T0+0.256 s)\nis best fit in the 20 keV - 5 MeV range\nby the cutoff power law with the following model parameters:\nthe photon index alpha = -0.24(-0.14,+0.16),\nand the peak energy Ep = 1410(-160,+170) keV,\nchi2 = 69/68 dof.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB140611_T13864/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 16389,
  "createdOn": 1402574012000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 140611A",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 140611A"
}