TITLE: GCN CIRCULAR NUMBER: 45596 SUBJECT: GRB 260914A: SVOM/GRM observation DATE: 26/09/16 16:14:48 GMT FROM: Jin-Ye Luo SVOM/GRM team: Jin-Ye Luo, Wen-Jun Tan, Chen-Wei Wang, Yue Wang, Chao Zheng, Zheng-Hang Yu, Shi-Jie Zheng, Yue Huang, Shao-Lin Xiong, Shuang-Nan Zhang (IHEP) SVOM/ECLAIRs team: Report on behalf of the SVOM team: SVOM/GRM was triggered in-flight by GRB 260914A at 2026-09-14T11:12:33.000 (T0), which is also detected by SVOM/ECLAIRs (Wang et al., GCN #45562; Brunet et al., GCN #45594) and Fermi/GBM (Fermi GBM team, GCN #45569). With the event-by-event data downloaded through the X-band ground station, the GRM light curve shows that this burst consists of a single pulse with a possible precursor. The burst has a T90 of 3.5 +/-1.0 s in the 15-5000 keV band. The SVOM/GRM light curve can be found here: https://www.bursthub.cn/gcn/2026/svgrb260914A.png With the localization from SVOM/ECLAIRs (GCN #45564), the time-averaged spectrum from T0-4 to T0+3 s is best fitted by a power-law function with an exponential high-energy cutoff. The power law index is -0.4 +0.7/-0.6 and the cutoff energy, parameterized as Epeak, is 33.3 +4.3/-5.2 keV. The event fluence (10-1000 keV) in this time interval is (6.30 +0.66/−0.63)E-07 erg/cm^2. The localization of GRB 260914A in the 'Amati' relation diagram is shown at: https://www.bursthub.cn/gcn/2026/svgrb260914A_amati.png The Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. GRM is developed by the Institute of High Energy Physics (IHEP) of CAS. The SVOM/GRM point of contact for this burst is: Jin-Ye Luo (IHEP) (luojy@ihep.ac.cn)