TITLE: GCN CIRCULAR NUMBER: 45356 SUBJECT: GRB 260808A: GECAM-B observation DATE: 26/08/11 10:49:01 GMT FROM: Xinghao Luo at IHEP <2952704891@qq.com> Xing-Hao Luo, Chen-Wei Wang, Ren-Yang Zhao, Shao-Lin Xiong (IHEP) report on behalf of GECAM team: GECAM-B was triggered on-ground by GRB 260808A, at 2026-08-08T02:51:45.500 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45313), NuSTAR (G. Waratkar et.al., GCN#45327) and CGBM (M.L. Cherry et.al., GCN#45347). According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of multiple pulses with a duration (T90) of 14 +/-2 s. The GECAM-B light curve can be found here: https://www.bursthub.cn//gcn/2026/gecambgrb260808A.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). View this GCN Circular online at https://gcn.nasa.gov/circulars/45356. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...