GCN Circular 20274
Subject
GRB 161213A: POLAR Observation
Date
2016-12-16T14:58:03Z (8 years ago)
From
Haulin Xiao at PSI/POLAR <hualin.xiao@psi.ch>
R. Marcinkowski, H. Xiao and W. Hajdas in the name of POLAR Collaboration
At 2016-12-13T07:05:02 during a routine on-ground search of data, POLAR detected the GRB 161213A, which was also observed by the FERMI/GBM (trigger #503305506) and Integral/SPIACS (2016-12-13T07:05:02.85). The POLAR light curve consists of two main peaks with total duration of 7s. The 1s maximum peak flux is 370 +/- 50 cts/s (background subtracted). The total number of counts is 1360 +/- 140 (background subtracted). The above measurements are preliminary and estimated energy range is about 80 keV to 500 keV.
LC_URL: http://polar.psi.ch/triggers/POLAR_GRB161213A.png
The incident angle in POLAR detector coordinate is:
theta: 46 [deg]
phi: 245 [deg]
This direction is computed using the best location from the FERMI/GBM, which is:
RA: 238 [deg]
Dec: 31 [deg]
The analysis results presented above are preliminary. The calibration work is ongoing.
POLAR is a dedicated Gamma-Ray Burst polarimeter which was launched on-board the Chinese space laboratory Tiangong-2 (TG-2) on Sep 15, 2016.The energy detection range of POLAR is ~ 50-500 keV