{
  "bibcode": "2016GCN.18857....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, P. Oleynik, M. Ulanov,\nD. Svinkin, A. Tsvetkova, A. Lysenko, A. Kozlova and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 160107A\n(MAXI/GSC detection: Nakagawa et al., GCN 18839;\nFermi GBM observation: Veres & Meegan, GCN 18844;\nCALET Gamma-Ray Burst Monitor detection: Nakahira et al., GCN 18845)\ntriggered Konus-Wind at T0=80440.646 s UT (22:20:40.646).\n\nThe burst light curve shows multiple, partly overlapped peaks\nin the interval from ~T0-40 s to ~T0+110 s.\nThe emission is seen up to ~5 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 2.48(-0.28,+0.54)x10^-5 erg/cm2,\nand a 64-ms peak energy flux, measured from T0+25.232 s,\nof 5.86(-1.22,+1.39)x10^-6 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum of the burst\n(measured from T0 to T0+106.752 s)\nis best fit in the 20 keV - 5 MeV range\nby a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith  alpha = -1.75(-0.16,+0.18),\nand Ep = 131(-36,+85) keV (chi2 = 83/77 dof).\nFitting by the GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index:\nbeta < -2.0 (chi2 = 82/76 dof).\n\nThe spectrum near the peak count rate\n(measured from T0+24.832 to T0+33.024 s)\nis best fit in the 20 keV - 3 MeV range\nby a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith  alpha = -1.52(-0.16,+0.18),\nand Ep = 198(-43,+86) keV (chi2 = 49/68 dof).\nFitting by the GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index:\nbeta < -2.1 (chi2 = 49/67 dof).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB160107_T80440/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 18857,
  "createdOn": 1452692182000,
  "email": "tsvetkova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 160107A",
  "submitter": "Anastasia Tsvetkova at Ioffe Institute  <tsvetkova@mail.ioffe.ru>",
  "eventId": "GRB 160107A"
}