{
  "bibcode": "2017GCN.20387....1M",
  "body": "R. Marcinkowski (PSI), H. Xiao (PSI) and W. Hajdas (PSI) report on behalf\nof the POLAR collaboration:\n\nAt 2017-01-05T06:14:07.0 UT(T0), during a routine on-ground search of\ndata, POLAR detected the GRB 170105A, which was also observed by SPIACS \nat 2017-01-05T06:14:06 and Konus-Wind at 22450.264s UT (06:14:10.264).\n\nThe POLAR light curve consists of 1 peak with duration (T90) of \n2.0 +/- 0.5 s measured from T0.\nThe 0.5 s peak flux at T0 + 0.8 s  is equal to 2490 +/- 90 counts/sec.\nPOLAR recorded 3600 +/- 160 events from the burst.\nAbove measurements are in the energy range of about 80 - 500 keV.\n\nLC_URL: http://polar.psi.ch/triggers/GRB_170105A_raw.png\n     or http://polar.psi.ch/pub/lc.php?event=GRB+170105A\n\nThe analysis results presented above are preliminary. Calibration of the \ninstrument is ongoing. POLAR is a dedicated Gamma-Ray Burst polarimeter \nwhich was launched on-board the Chinese space laboratory Tiangong-2 (TG-2)\non Sep 15, 2016. The energy detection range of POLAR is ~ 50-500 keV.\nMore information about POLAR can be found at http://polar.psi.ch/pub ,\nhttp://polar.ihep.ac.cn/en/ and http://isdc.unige.ch/polar/ .\n\nThis message is quotable in publications.",
  "circularId": 20387,
  "createdOn": 1483771477000,
  "email": "radoslaw.marcinkowski@psi.ch",
  "subject": "GRB 170105A: POLAR Observation",
  "submitter": "Radek Marcinkowski at PSI/POLAR  <radoslaw.marcinkowski@psi.ch>",
  "eventId": "GRB 170105A"
}