[vsnet-grb-info 21725] GRB 190129B: Insight-HXMT/HE detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23824
SUBJECT: GRB 190129B: Insight-HXMT/HE detection
DATE:    19/01/31 11:28:42 GMT
FROM:    QiBin Yi at IHEP, HXMT  <yiqb at ihep.ac.cn>

Q. B. Yi, 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, J. L. Zhao,
A. M. Zhang, Y. F. Zhang, C. L. Zou (IHEP), Y. J. Jin, 
Z. Zhang (THU), T. P. Li (IHEP/THU), L. M. Song, 
M. Wu, Y. P. Xu, S. N. Zhang (IHEP), 
report on behalf of the Insight-HXMT team: 

At 2019-01-29T12:15:31.000 (T0), the Insight-HXMT/HE detected 
GRB 190129B (trigger ID: HEB190129510) in a routine search of the data, 
which was also triggered by IPN  (Hurley et al., GCN 23808) 
and Konus-Wind (Frederiks et al., GCN 23809)

The Insight-HXMT/HE light curve mainly consists of multiple 
pulses with a duration (T90) of 10.1 s measured from T0+8.10 s. 
The 1-s peak rate, measured from T0+14.07 s, is 18437.6 cnts/s. 
The total counts from this burst is 126004.0 counts. 
URL_LC: http://www.hxmt.org/images/GRB/HEB190129510_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 (record 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 
fundedjointly by the China National Space Administration (CNSA) and 
the Chinese Academy of Sciences (CAS). 
More information could be found at: http://www.hxmt.org.