{
  "bibcode": "2014GCN.15818....1G",
  "body": "S. Golenetskii, R.Aptekar, V. Pal'shin, D. Frederiks, P. Oleynik, M.\nUlanov, D. Svinkin, A. Tsvetkova and T. Cline on behalf of the\nKonus-Wind team report:\n\nThe bright GRB 140209A (Swift-BAT trigger #586071: Cenko et al., GCN \n15808, Palmer et al., GCN 15812; Fermi-GBM detection: von Kienlin, GCN \n15811) triggered Konus-Wind at T0=27060.493 s UT (07:31:00.493).\n\nThe burst light curve shows a double peaked pulse with a total duration \nof ~1.4 s. The emission is seen up to ~1 MeV.\n\nAs observed by Konus-Wind, the burst had a fluence of (7.2 � 0.6)x10^-6 \nerg/cm2, and a 16-ms peak flux, measured from T0+0.280 s,\nof (2.2 � 0.3)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum (measured from T0 to T0+8.448 s)\nis best fit (in the 20 keV - 1 MeV range)\nby a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith alpha = -1.09(-0.21,+0.23)\nand Ep = 173(-20,+15) keV (chi2 = 53.2/55 dof).\nFitting by GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy\nphoton index: beta < -2.8 (chi2 = 53.2/54 dof).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB140209_T27060/\n\nAll the quoted errors are at the 90% confidence level.\n\nAll the quoted results are preliminary.",
  "circularId": 15818,
  "createdOn": 1392138792000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 140209A",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 140209A"
}