{
  "bibcode": "2015GCN.17373....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, intense GRB 150201A\n(Swift BAT trigger 629302: Cannizzo et al., GCN 17368;\nFermi-GBM detection: Yu and Pelassa, GCN 17370)\ntriggered Konus-Wind at T0=49611.653 s UT (13:46:51.653).\n\nThe burst light curve shows a double-peaked pulse with a total duration \nof ~26 s.\nThe emission is seen up to ~10 MeV.\nNo post-burst activity was observed by Konus-Wind until ~T0+450s;\nalso, since the instrument switched to the read-out mode,\nthere are no triggered or waiting mode data available for the time\nof the second GBM trigger 150201590 (14:09:56 UT; GCN 17370).\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB150201_T49611/\n\nAs observed by Konus-Wind, the burst\nhad a fluence of 6.18(-0.22,+0.23)x10^-5 erg/cm2,\nand a 64-ms peak flux, measured from T0+1.712 s,\nof 2.10(-0.28,+0.30)x10^-5 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+22.272 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 = -1.20(-0.11,+0.13),\nthe high energy photon index beta = -2.89(-0.27,+0.17),\nthe peak energy 123(-6,+5) keV\n(chi2 = 88/93 dof)\n\nThe spectrum near the maximum count rate\n(measured from T0 to T0+2.048 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 = -0.77(-0.12,+0.14),\nthe high energy photon index beta = -2.47(-0.25,+0.17),\nthe peak energy 193(-20,+21) keV\n(chi2 = 65/50 dof)\n\nAll the quoted errors are at the 90% confidence level.\nAll the quoted values are preliminary.",
  "circularId": 17373,
  "createdOn": 1422897025000,
  "email": "tsvetkova@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 150201A",
  "submitter": "Anastasia Tsvetkova at Ioffe Institute  <tsvetkova@mail.ioffe.ru>",
  "eventId": "GRB 150201A"
}