{
  "bibcode": "2015GCN.17911....1G",
  "body": "S. Golenetskii, R. Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 150607A (Swift-BAT trigger #642620:\nD'Elia, et al., GCN 17904; Palmer, et al., GCN 17907;\nFermi GBM detection: Roberts, GCN 17906) triggered Konus-Wind at \nT0=28509.211 s UT (07:55:09.211).\n\nThe burst light curve shows a multipeak structure\nwith a total duration of ~30 s.\nThe emission is seen up to ~1 MeV.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB150607_T28509/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 4.2(-0.8,+1.3)x10^-6 erg/cm2,\nand a 64-ms peak flux, measured from T0-0.222 s,\nof 1.2(-0.5,+0.6)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+33.024 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 = -1.4(-0.3,+0.4)\nand Ep = 173(-57,+183) keV (chi2 = 61/62 dof).\nFitting by a GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index: beta < -2\n(chi2 = 60/61 dof)\n\nThe spectrum near the maximum count rate\n(measured from T0+0.000 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 = -1.4(-0.3,+0.4)\nand Ep = 152(-42,+108) keV (chi2 = 46/62 dof).\nFitting by a GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index: beta < -2\n(chi2 = 46/61 dof)\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 17911,
  "createdOn": 1433761170000,
  "email": "svinkin@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 150607A",
  "submitter": "Dmitry Svinkin at Ioffe Institute  <svinkin@mail.ioffe.ru>",
  "eventId": "GRB 150607A"
}