TITLE: GCN CIRCULAR NUMBER: 45174 SUBJECT: GRB 260714B: GECAM-B observation of a burst DATE: 26/07/16 14:21:30 GMT FROM: renyz16607@163.com Yang-Zhao Ren, Chen-Wei Wang, Shao-Lin Xiong (IHEP) report on behalf of GECAM team: GECAM-B was triggered in-flight by GRB 260714B, at 2026-07-14T18:23:32.000 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45161), Fermi/LAT (Gupta et. Al., GCN #45162), and AstroSat/CZTI (Pathak et. al., GCN #45163). According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of multiple pulses with a duration (T90) of 21.5 +2.5/-10.0 s. The GECAM-B light curve can be found here: https://www.bursthub.cn/gcn/2026/gecambgrb260714B.png The time-averaged spectrum from T0-4 to T0 + 4 s is best fitted by a power law function. The power law index is -1.69 +0.09/-0.08. The event fluence (10-1000 keV) in this time interval is (6.06 +0.64/-0.67) E-06 erg/cm^2. 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/45174. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...