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GCN Circular 20271

Subject
GRB 161210A: POLAR observation
Date
2016-12-16T06:21:33Z (7 years ago)
From
Zhengheng Li at POLAR <lizhengheng@ihep.ac.cn>
Z. H. Li (IHEP), Y. H. Wang (IHEP), Y. Zhao (IHEP), M. Z. Feng(IHEP),
J. C. Sun (IHEP), H. C. Li (IHEP), S. L. Xiong (IHEP), T. Batsch(NCBJ),
T. Bernasconi (ISDC/UniGe), F. Cadoux (DPNC/UniGe), Y. W. Dong (IHEP),
M. Y. Ge (IHEP),W.Hajdas (PSI),Y. Huang (IHEP), Karol Jedrzejczak (NCBJ),
M. R. Kole (DPNC/UniGe), F. J. Lu (IHEP), R. Marcinkowski(PSI), 
M. Pohl (DPNC/UniGe), N. Produit (ISDC/UniGe),A. Rutczynska (NCBJ),
D. Rybka (NCBJ),L. M. Song (IHEP), J. Szabelski (NCBJ), X. Wen (IHEP),
 B. B. Wu (IHEP),X. Wu (DPNC/UniGe), H. L. Xiao (PSI), M. Xu (IHEP),
J. Zhang (IHEP),L. Y. Zhang (IHEP), P. Zhang (PSI), S. N. Zhang (IHEP),
Y. J. Zhang (IHEP), A. Zwolinska (NCBJ)
report for the POLAR collaboration:

At��2016-12-10T12:33:54��UT��(T0),��during��a��routine��on-ground��
search��of��data,��POLAR��detected the GRB 161210A,��
which��was��also��detected��by��the��Fermi/GBM (trigger 503066038/161210523).

The��POLAR��light��curve��consists��of��a��single��peak,
with��a��duration��(T90) of��11.76��s��measured��from��T0-0.10��s .
The��1s��peak��rate��measured��from��T0+0.00��s��is��199.3��cnts/s,
The��total��counts��is��about��1318 cnts.  The��above��measurements��are
in��the��energy��range��of��about��80-500��keV.

LC_URL:
http://polar.ihep.ac.cn/grb/2016/GRB161210A/lc/POLAR_lc_grb161210523.jpg

Using��the��best��location��from��the��Fermi/GBM,��which��is��(J2000):
RA:����    283.120 �� [deg]
Dec:���� �� +63.050   [deg]
Err:�������� 10.11     [deg]

the��incident��angle��in��POLAR��coordinate��at��T0��is:
theta:�� 75.9 ��[deg]
phi: ����-23.6�� [deg]

The��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/html/
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