GCN Circular 22341
Subject
GRB 180111A: Insight-HXMT/HE observation
Date
2018-01-15T12:20:59Z (6 years ago)
From
Shaolin Xiong at IHEP <xiongsl@ihep.ac.cn>
G. Li, S. L. Xiong, X. B. Li, C. K. Li, J. Y. Liao, C. Z. Liu, X. F. Li,
Z. W. Li, X. F. Lu, Z. Chang, J. L. Zhao, A. M. Zhang, C. L. Zou (IHEP),
Y. J. Jin, Z. Zhang (THU), T. P. Li (IHEP/THU), F. J. Lu, L. M. Song, H.
Y. Wang, M. Wu, Y. P. Xu, S. N. Zhang (IHEP), report on behalf of the
Insight-HXMT team:
At 2018-01-11T16:42:06 (T0), Insight-HXMT/HE detected
GRB 180111A (trigger ID: HEB180111695) in a routine search of the
data,which is also triggered by Swift/BAT (Lien et al.,GCN
22318),AGILE/MCAL(Verrecchia et al.,GCN 22321),and CALET(Asaoka et
al.,GCN 22333).
The Insight-HXMT/HE light curve mainly consists of
multi-pulses with a duration (T90) of 19.94 s measured from T0+0.185 s.
The 500-ms peak rate, measured from T0+0.422 s, is 2332.29 cnts/sec.
The total counts from this burst is 13972.02 counts. URL_LC:
http://www.hxmt.org/images/GRB/HEB180111695_lc.jpg
All measurements above are made with the CsI detectors operating in the GRB mode, in
which the energy range is increased to about 200 - 3000 keV (record
energy), compared to the normal mode of 80 - 800 keV. 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.
The analysis results presented above are preliminary; final results will
be published elsewhere. 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/index.php/enhome .
