Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 24760

GRB 190605B: Insight-HXMT/HE detection
2019-06-06T10:22:20Z (5 years ago)
QiBin Yi at IHEP, HXMT <>
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 2019-06-05T02:39:08.00 (T0), Insight-HXMT/HE detected 
GRB 190605B (trigger ID: HEB190605110) in a routine search of the data, 
which was also triggered by INTEGRAL/SPI-ACS.

The Insight-HXMT/HE light curve mainly consists of multiple
pulses with a duration (T90) of 14.69 s measured from T0+0.78 s. 
The 1-ms peak rate, measured from T0+2.57 s, is 2204 cnts/sec. 
The total counts from this burst is 12835 counts. 

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:
Looking for U.S. government information and services? Visit