{
  "bibcode": "2016GCN.18837....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 short-duration, intense GRB 151225A\n(CALET detection: Kawakubo et al., GCN 18724;\nIPN triangulation: Golenetskii et al., GCN 18836)\ntriggered Konus-Wind at T0=68946.508 s UT (19:09:06.508).\n\nThe burst light curve shows a  multipeaked structure\nwith a total duration of ~1.1 s.\nThe emission is seen up to ~2 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 3.17(-0.85,+1.79)x10^-6 erg/cm2,\nand a 16-ms peak energy flux, measured from T0+0.416 s,\nof 2.22(-0.79,+1.46)x10^-5 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+8.448 s)\nis best fit in the 20 keV - 2 MeV range\nby a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith  alpha = -1.13(-0.48,+0.74),\nand Ep = 360(-153,+741) keV (chi2 = 56/62 dof).\nFitting by the GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index:\nbeta < -1.7 (chi2 = 56/61 dof).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB151225_T68946/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 18837,
  "createdOn": 1452170163000,
  "email": "tsvetkova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 151225A",
  "submitter": "Anastasia Tsvetkova at Ioffe Institute  <tsvetkova@mail.ioffe.ru>",
  "eventId": "GRB 151225A"
}