[vsnet-grb-info 22615] GRB 190530A: Insight-HXMT/HE detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24714
SUBJECT: GRB 190530A: Insight-HXMT/HE detection
DATE:    19/06/02 15:17:47 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 2019-05-30T10:19:08.90 (T0), Insight-HXMT/HE detected 
GRB 190530A (trigger ID: HEB190530429) in a routine search of the data, 
which was also triggered by Fermi/GBM (GCN #24676), Fermi/LAT 
(GCN #24679), and AGILE/MCAL(GCN #24678). 

The Insight-HXMT/HE light curve mainly consists of multiple
pulses with a duration (T90) of 20.31 s measured from T0+2.11 s. 
The 1-ms peak rate, measured from T0+10.52 s, is 18182 cnts/sec. 
The total counts from this burst is 214189 counts. 
Some part of the Insight-HXMT/HE light curve suffers data saturation 
due to the extreme brightness of this burst.
URL_LC: http://www.hxmt.org/images/GRB/HEB190530429_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.