[vsnet-grb-info 24050] GRB 191031E: Insight-HXMT/HE detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26148
SUBJECT: GRB 191031E: Insight-HXMT/HE detection
DATE:    19/11/03 01:11:20 GMT
FROM:    QiBin Yi at IHEP, HXMT  <yiqb at ihep.ac.cn>

Q. B. Yi, S. Xiao, Q. Luo, C. Cai, C. K. Li,
X. B. Li, G. Li, J. Y. Liao, S. L. Xiong, 
C. Z. Liu, X. F. Li, Z. W. Li, Z. Chang, X. F. Lu,
A. M. Zhang, Y. F. Zhang, 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 2019-10-31T07:39:03.00 (T0), Insight-HXMT/HE detected 
GRB 191031E (trigger ID: HEB191031318) in a routine search of the data, 
which was also triggered by INTEGRAL/SPI-ACS (Num #8401) and KONUS/WIND. 

The Insight-HXMT/HE light curve mainly consists of a single  
pulse with a duration (T90) of 9.83 s measured from T0-6.60 s. 
The 1-ms peak rate, measured from T0+0.03 s, is 1045 cnts/sec. 
The total counts from this burst is 6357 counts. 
URL_LC: http://www.hxmt.org/images/GRB/HEB191031318_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.