GCN Circular 45076
Subject
GRB 260629A: GECAM-A observation of a short burst
Event
Date
2026-07-04T11:20:10Z (6 days ago)
From
Yue Wang <m18509381757@163.com>
Via
Web form
Yue Wang, Chen-Wei Wang, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:
GECAM-A was triggered on-ground by GRB 260629A at 2026-06-29T15:06:59.000 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45056) and AstroSat CZTI (Harsha et. al., GCN #45074).
According to the GECAM-A light curves in about 70-6000 keV, this burst mainly consists of a single pulse with a duration (T90) of 3.20 +1.13/-1.10 s.
The GECAM-A light curve can be found here:
https://www.bursthub.cn//admin/static/gecamagrb260629A.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).