{
  "bibcode": "2015GCN.18636....1G",
  "body": "S. Golenetskii, R. Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, A. Kozlova,\nand T. Cline on behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 151120A\n(INTEGRAL ISGRI detection: S. Mereghetti et al., GCN Circ. 18623;\nFermi GBM detection: A. von Kienlin, GCN Circ. 18628)\ntriggered Konus-Wind at T0=30171.357 s UT (08:22:51.357).\n\nThe burst light curve shows a multipeaked structure\nstarted at ~T0-1.3 s with a total duration of ~20 s.\nThe emission is seen up to ~2 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB151120_T30171/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 7.20(-1.25,+1.79)x10^-6 erg/cm2,\nand a 64-ms peak flux, measured from T0+0.752 s,\nof 2.09(-0.88,+1.15)x10^-6 erg/cm2/s\n(both in the 20 keV - 10 MeV energy range).\n\nThe time-averaged spectrum of the burst\n(measured from T0 to T0+24.832 s)\nis best fit in the 20 keV - 10 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.26 (-0.48,+0.77),\nthe high energy photon index beta = -2.70 (-0.88,+0.35),\nthe peak energy 106 (-19,+20) keV\n(chi2 = 84/85 dof)\n\nThe spectrum near the maximum count rate\n(measured from T0+0.256 to T0+8.448 s)\nis best fit in the 20 keV - 10 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = 0.81 (-0.75,+3.91),\nthe high energy photon index beta = -2.42 (-0.38,+0.35),\nthe peak energy 113 (-40,+22) keV\n(chi2 = 81/82 dof)\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 18636,
  "createdOn": 1448273653000,
  "email": "ann_kozlova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 151120A",
  "submitter": "Anna Kozlova at Ioffe Institute  <ann_kozlova@mail.ioffe.ru>",
  "eventId": "GRB 151120A"
}