GCN Circular 43326
Subject
GRB 260103A: Insight-HXMT/HE detection
Event
Date
2026-01-05T05:48:29Z (6 days ago)
From
Xinghao Luo at IHEP <2952704891@qq.com>
Via
Web form
Xing-hao Luo, Chen-Wei Wang, Chao Zheng, and Shao-Lin Xiong (IHEP) report on behalf of the Insight-HXMT team:
At 2026-01-03T01:46:53.800 (T0), Insight-HXMT/HE detected the long burst GRB 260103A, which is also detected by SVOM/GRM (Chen-Wei Wang et.al., GCN #43314) , GECAM-B (Xing-Hao Luo et.al., GCN #43317)
The Insight-HXMT/HE light curve mainly consists of multiple pulses with a T90 of 4.6 +1.8/-1.0 s. The 1s peak rate, measured from T0-0.25 s, is 1848 cnts/sec. Insight-HXMT/HE detected a total of 4704 counts form this burst.
The HXMT/HE light curve can be found here:
https://www.bursthub.cn//admin/static/hxmtgrb260103A.png
All measurements above are made with the CsI detectors of Insight-HXMT/HE operating in the regular mode with the energy range of about 60-900 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