GCN Circular 20460
Subject
GRB 170112B: POLAR observation
Date
2017-01-15T06:28:51Z (8 years ago)
From
Wen Xing at POLAR <wenxing@ihep.ac.cn>
Xing Wen (IHEP), Yi Zhao (IHEP) and Hancheng Li (IHEP)
report on behalf of the POLAR collaboration:
At 2017-01-12T23:16:09.00 UT (T0), during a routine on-ground
search of data, POLAR detected the GRB 170112B,
which was also detected by the
Fermi/GBM (trigger 505955774/170112970).
The POLAR light curve consists of a single peak,
with a duration (T90) of 13.54 s measured from T0-0.06 s.
The 1-s peak rate measured from T0+0.00 s is 509.0 cnts/s.
The total counts is about 1970 cnts. The above measurements
are in the energy range of about 80-500 keV.
LC_URL:
http://polar.ihep.ac.cn/grb/2017/01/GRB170112B/lc/POLAR_lc_grb170112B.jpg
All analysis results presented above are preliminary.
POLAR is a dedicated Gamma-Ray Burst polarimeter (50-500 keV)
on-board the Chinese space laboratory Tiangong-2 launched on
Sep 15,2016. More information about POLAR can be found at
http://polar.ihep.ac.cn/en/ , http://isdc.unige.ch/polar/
and http://polar.psi.ch/pub/.