{
  "bibcode": "2013GCN.14447....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin,\nP. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf\nof the Konus-Wind team, report:\n\nThe long-duration intense GRB 130425A\n(Fermi-GBM detection: von Kienlin, GCN 14442;\nIPN triangulation: Hurley et al., GCN 14446)\ntriggered Konus-Wind at T0=28280.029s UT (07:51:20.029)\n\nThe light curve shows an initial pulse, from ~T0-9 s to\n~T0+15 s, followed by a bright multi-peaked structure\nfrom ~T0+30 s to ~T0+68 s.\nA total duration of the burst is ~80 s.\nThe emission is seen up to 10 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB130425_T28280/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of (5.9 � 0.7)x10-5 erg/cm2,\nand a 64-ms peak flux, measured from T0+39.808s,\nof (7.1 � 0.6)x10-6 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-integrated spectrum (measured from T0 to T0+73.216 s)\nis best fit in the 20 keV - 15 MeV range\nby the GRB (Band) function with the following model parameters:\nthe low-energy photon index alpha = -1.29 � 0.08,\nthe high energy photon index beta = -2.46 � 0.23,\nthe peak energy Ep = 167 � 17 keV,\nchi2 = 107/97 dof.\n\nThe spectrum at the maximum count rate (measured from T0+33.024\nto T0+40.448 s) is best fit in the 20 keV - 15 MeV range\nby the GRB (Band) function with the following model parameters:\nthe low-energy photon index alpha = -1.10 � 0.12,\nthe high energy photon index beta = -2.40 � 0.36,\nthe peak energy Ep = 237 � 45 keV,\nchi2 = 91/97 dof.\n\nAll the quoted results are preliminary.",
  "circularId": 14447,
  "createdOn": 1366993066000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 130425A",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 130425A"
}