[vsnet-grb-info 22659] GRB 190604A: Insight-HXMT/HE detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24758
SUBJECT: GRB 190604A: Insight-HXMT/HE detection
DATE:    19/06/06 10:14:36 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 2019-06-04T10:42:38.00 (T0), Insight-HXMT/HE detected 
GRB 190604A (trigger ID: HEB190604446) in a routine search of the data, 
which was also triggered by Fermi/GBM (GCN #24739). 

The Insight-HXMT/HE light curve mainly consists of multiple
pulses with a duration (T90) of 6.37 s measured from T0+0.34 s. 
The 1-ms peak rate, measured from T0+2.82 s, is 1963 cnts/sec. 
The total counts from this burst is 6908 counts. 
URL_LC: http://www.hxmt.org/images/GRB/HEB190604446_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.