TITLE:   GCN CIRCULAR
NUMBER:  22400
SUBJECT: GRB 180202A: Insight-HXMT/HE detection
DATE:    18/02/07 09:18:13 GMT
FROM:    Yue Huang at IHEP  <huangyue@ihep.ac.cn>

Y. Huang, Y. Zhu, S. L. Xiong, X. B. Li, C. K. Li, C.Z. Liu,
X.F. Li, Z. W. Li, Z. Chang, J. L. Zhao, A. M. Zhang, Y. F. Zhang,
X. F. Lu, C. L. Zou (IHEP), Y. J. Jin, Z. Zhang (THU), T. P. Li (IHEP/THU),
F. J. Lu, L. M. Song, H. Y. Wang, M. Wu, Y. P. Xu, S. N. Zhang (IHEP),
report on behalf of the Insight-HXMT team:
 
At 2018-02-02T05:04:28.00 UT, the Insight-HXMT/HE detected
GRB 180202A(trigger ID: HEB180202211) in a routine search of the data,
which was also triggered by INTEGRAL/SPI-ACS and KONUS-Wind.
 
The Insight-HXMT/HE light curve consists of a single pulse
with a duration (T90) of 7.2 s measured from T0+0.2 s.
The 500-ms peak rate, measured from T0+4.2 s, is 4245.7 cnts/sec.
The total counts from this burst is 15793.7 counts.

URL_LC: http://www.hxmt.org/images/GRB/HEB180202211_lc.jpg
 
All measurements above are made with the CsI detectors operating in the
regular mode with the energy range of about 80-800 keV (record energy).
Only gamma-rays with energy greater than about 200 keV can penetrate
the spacecraft and leave signals in the CsI detectors installed inside
of the telescope.
 
The analysis results presented above are preliminary, 
final results will be published elsewhere.
 
Insight-HXMT is the first Chinese space X-ray telescope, which was funded
jointly by the China National Space Administration (CNSA) and the Chinese
Academy of Sciences (CAS). More information about it could be found at:
http://www.hxmt.org/index.php/enhome.


huangyue@ihep.ac.cn