GCN Circular 44040
Subject
GRB 260316B: GECAM-B observation
Event
Date
2026-03-17T15:46:38Z (a month ago)
Edited On
2026-03-17T17:09:18Z (a month ago)
From
Yue Wang <m18509381757@163.com>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Yue Wang <m18509381757@163.com>
Via
Web form
Yue Wang, Chao Zheng, Chen-Wei Wang, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:
GECAM-B was triggered in-flight by GRB 260316B at 2026-03-16T17:12:53.100 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #44031), AstroSat CZTI (Harsha K. H. et. al., GCN
#44035) and SVOM/GRM (Yue Wang et. al., GCN #44039).
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 2.4 +0.4/-0.4 s.
The GECAM-B light curve can be found here:
https://www.bursthub.cn//admin/static/gecambgrb260316B.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).