TITLE: GCN CIRCULAR NUMBER: 43402 SUBJECT: GRB 260114A: GECAM-B observation of a short burst DATE: 26/01/14 17:19:48 GMT FROM: renyz16607@163.com Yang-Zhao Ren, Chen-Wei Wang, Wen-Jun Tan, Zheng-Hang Yu, Shao-Lin Xiong (IHEP) report on behalf of GECAM team: GECAM-B was triggered in-flight by GRB 260114A, at 2026-01-14T11:40:26.350 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #43395), and Swift/BAT (Eyles-Ferris et al., GCN #43396). According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of a pulse with a duration (T90) of 0.38 +0.18/-0.08 s. The GECAM-B light curve can be found here: https://www.bursthub.cn//admin/static/gecambgrb260114A.png The time-averaged spectrum from T0-0.1 to T0+0.4 s is best fitted by a power law function with an exponential high-energy cutoff. The power law index is -0.26 +0.16/-0.30 and the cutoff energy, parameterized as Epeak, is 700 +93/-96 keV. The event fluence (10-1000 keV) in this time interval is (5.03 +0.34/-0.31)E-06 erg/cm^2. The 'Amati' relation diagram of GRB 260114A is shown at: https://www.bursthub.cn//admin/static/gecambgrb260114A_amati.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/43402. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...