{
  "bibcode": "2014GCN.17055....1G",
  "body": "S. Golenetskii, R.Aptekar, V. Pal'shin, D. Frederiks, P. Oleynik, \nM.Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind\nteam report:\n\nThe most intense part of the long GRB 141109A (Swift-BAT trigger \n#618024: D'Avanzo, et al., GCN Circ. 17037, Baumgartner, et al., GCN \nCirc. 17044) was detected by Konus-Wind in the waiting mode.\n\nThe burst light curve shows two pulses started at ~T0(BAT)+31 s with a \ntotal duration of ~94 s, and a weak tail seen in the soft energy range \nG1 up to ~T0(BAT)+300 s.\n\nAs observed by Konus-Wind, the burst had a fluence of\n1.37(-0.18,+0.20)x10^-5 erg/cm2 and a 2.944-s peak flux,\nmeasured from ~T0(BAT)+81 s, of (4.9 +/- 0.8)x10^-7 erg/cm2 (both in the \n20 - 1200 keV energy range).\n\nModeling the K-W 3-channel time-integrated spectrum (from T0(BAT)+31 s\nto T0(BAT)+125 s) by a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nyields alpha = -1.24(-0.25,+0.37), and Ep = 191(-43,+76) keV.\n\nAssuming z = 2.993 (Xu et al., GCN 17040) and a standard cosmology model \nwith H_0 = 71 km/s/Mpc, Omega_M = 0.27, Omega_Lambda = 0.73, the \nisotropic energy release is E_iso = 3.31(-0.59,+0.78)x10^53 erg, and\nthe isotropic peak luminosity is L_iso = (4.8 +/- 0.9)x10^52 erg/s in 1 \nkeV to 10 MeV at the GRB rest frame extrapolating the best exponential \ncutoff function fit.\n\nAll the quoted errors are estimated at the 1 sigma confidence level.\nAll the presented results are preliminary.\n\nThe K-W light curve of this burst is available at\nhttp://www.ioffe.rssi.ru/LEA/GRBs/GRB141109A/",
  "circularId": 17055,
  "createdOn": 1415640948000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 141109A",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 141109A"
}