{
  "bibcode": "2016GCN.19244....1T",
  "body": "A. Tsvetkova, S. Golenetskii, R.Aptekar, D. Frederiks, P. Oleynik,\nM. Ulanov, D. Svinkin, A. Lysenko, A. Kozlova and T. Cline\non behalf of the Konus-Wind team, report:\n\nThe long-duration GRB 160325A\n(Swift-BAT trigger #680436: Sonbas, Lien & Page, GCN 19222;\nFermi GBM detection: Roberts, GCN 19224;\nFermi-LAT detection: Axelsson et al., GCN 19227)\ntriggered Konus-Wind at T0=25162.835 s UT (06:59:22.835).\n\nThe burst light curve shows two emission episodes,\na total duration of the burst (80-360 keV) is ~45 s.\nThe emission is seen up to ~1.5 MeV.\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 1.73(-0.12,+0.14)x10^-5 erg/cm2,\nand a 64-ms peak energy flux, measured from T0+10.304 s,\nof 3.04(-1.04,+1.08)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+49.408 s)\nis best fit in the 20 keV - 1.5 MeV range\nby a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nwith  alpha = -0.93(-0.14,+0.15),\nand Ep = 214(-23,+31) keV (chi2 = 69/60 dof).\nFitting by the GRB (Band) model yields the same alpha and Ep,\nand an upper limit on the high energy photon index:\nbeta < -2.45 (chi2 = 69/59 dof).\n\nThe spectrum near the peak count rate\n(measured from T0 to T0+16.640 s)\nis best fit in the 20 keV - 2 MeV range\nby the GRB (Band) model with the following parameters:\nthe low-energy photon index alpha = -0.76(-0.15,+0.18),\nthe high energy photon index beta = -2.47(-0.59,+0.26),\nthe peak energy Ep = 207(-26,+32) keV,\nchi2 = 70/57 dof.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB160325_T25162/\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 19244,
  "createdOn": 1459259066000,
  "email": "tsvetkova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 160325A",
  "submitter": "Anastasia Tsvetkova at Ioffe Institute  <tsvetkova@mail.ioffe.ru>",
  "eventId": "GRB 160325A"
}