GCN Circular 45782
Subject
GRB 260926C: GECAM-B observation
Event
Date
2026-09-29T08:30:59Z (18 hours ago)
From
Jin-Ye Luo <jy_luo2002@163.com>
Via
Web form
Jin-Ye Luo, Chen-Wei Wang, Yue Wang, Zheng-Hang Yu, Xing-Hao Luo, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:
GECAM-B was triggered in-flight by GRB 260926C at 2026-09-26T23:27:12.450 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45766).
According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of a single pulse with a duration (T90) of 6.0 +2.5/-2.0 s.
The GECAM-B light curve can be found here:
https://www.bursthub.cn/gcn/2026/gecambgrb260926C.png
Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).