GCN Circular 25646
Subject
GRB 190901A: Insight-HXMT/HE detection
Date
2019-09-04T06:48:31Z (6 years ago)
From
Ce Cai at IHEP <caice@ihep.ac.cn>
J. M. Yao, Y. G. Zheng, C. Cai, 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 2019-09-01T21:21:57.80 (T0), Insight-HXMT/HE detected
GRB 190901A (trigger ID: HEB190901890) in a routine search of the data,
which was also triggered by Fermi GBM (GCN #25601).
The Insight-HXMT/HE light curve mainly consists of a single
pulse with a duration (T90) of 15.69 s measured from T0-3.00 s.
The 1-ms peak rate, measured from T0+0.95 s, is 1500 cnts/sec.
The total counts from this burst is 12538 counts.
URL_LC: http://www.hxmt.org/images/GRB/HEB190901890_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.