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GCN Circular 31293

Subject
GRB 211223A: Insight-HXMT/HE detection
Date
2021-12-24T02:03:26Z (3 years ago)
From
Xiaolu Zhang at IHEP <xlzhang@ihep.ac.cn>
X.L.Zhang, Y. Q. Zhang, S. L. Xiong, X. B. Li, C. Cai, Q. Luo, 
S. Xiao, J. C. Liu, W. C. Xue, Q. B. Yi, C. Zheng���Y. Huang,
G. Li, J. Y. Liao, X. Y. Song, S. L. Xiong, C. Z. Liu,  C. K. Li, 
X. F. Li, Z. W. Li, Z. Chang, 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, 
M. Wu, Y. P. Xu, S. N. Zhang (IHEP), 
report on behalf of the Insight-HXMT team:

At 2021-12-23T02:40:35.450 (T0), Insight-HXMT/HE detected 
GRB 211223A (trigger ID: HEB211223111) in a routine search of the data, 
which also triggered GECAM (GECAM Team, GCN #31286) and CALET.

URL_LC: http://twiki.ihep.ac.cn/pub/HXMT/GRBList/HEB211223111lc.png

All measurements above are made with the CsI detectors operating in the 
regular mode with the energy range of about 80-800 keV (deposited 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. 

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.
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