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GCN Circular 27565

Subject
GRB 200412B: Insight-HXMT/HE detection
Date
2020-04-13T09:40:36Z (4 years ago)
From
YaoGuang Zheng at IHEP <zhengyg@ihep.ac.cn>
Y. G. Zheng, C. Cai, Y. F. Du, W. C. Xue, 
Q. Luo, S. Xiao, Q. B. Yi, Y. Huang, C. K. Li, G. Li, 
X. B. Li, J. Y. Liao, S. L. Xiong,C. Z. Liu, 
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 2020-04-12T09:08:45.80 (T0), Insight-HXMT/HE detected 
GRB 200412B (trigger ID: HEB200412381) in a routine search of the data, 
which also triggered Fermi/GBM (GCN #27547).

The Insight-HXMT/HE light curve mainly consists of a single  
pulse with a duration (T90) of 5.50 s measured from T0+0.05 s. 
The 1-ms peak rate, measured from T0+4.28 s, is 14908 cnts/sec. 
The total counts from this burst is 25230 counts. 
URL_LC: http://twiki.ihep.ac.cn/pub/HXMT/GRBList/HEB200412381_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 (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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