GCN Circular 28490
Subject
GRB 200922A: Insight-HXMT/HE detection
Date
2020-09-24T11:02:22Z (4 years ago)
From
YaoGuang Zheng at IHEP <zhengyg@ihep.ac.cn>
Y. Q. Zhang, Y. G. Zheng, C. Cai, Q. Luo, S. Xiao, Q. B. Yi,
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 2020-09-22T12:06:46.00 (T0), Insight-HXMT/HE detected
GRB 200922A (trigger ID: HEB200922504) in a routine search of the data,
which also triggered Swift/BAT (Moss et al., GCN #28471).
The Insight-HXMT/HE light curve mainly consists of single
pulses with a duration (T90) of 1.87 s measured from T0+0.04 s.
The 1-ms peak rate, measured from T0+0.18 s, is 629 cnts/sec.
The total counts from this burst is 742 counts.
URL_LC: http://twiki.ihep.ac.cn/pub/HXMT/GRBList/HEB200922504_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.