TITLE: GCN CIRCULAR NUMBER: 44109 SUBJECT: GRID detection of GRB 260320A DATE: 26/03/25 01:52:27 GMT FROM: GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn> Longhao Li, Yuchen He, Chenyu Wang, Zirui Yang report on behalf of the GRID Collaboration: GRID-11B reports the detection of the long-duration GRB 260320A, which was also detected by Glowbug gamma-ray(C.C. Cheung et al.,GCN#44093), Insight-HXMT/HE (Xinghao Luo et al., GCN #44077) and NuSTAR (G. Waratkar et al., GCN #44064). The event was triggered with GRID on 2026-03-20 at 19:40:04.5 UTC. The measured burst duration (T90) in the 30-2000 keV range is approximately 9.9 +/- 1.8 seconds from GRID-11B . At present, only the GRID light curve is available. No spectral analysis is reported at this stage. The GRID light curve of this event can be found at https://mirrors.tuna.tsinghua.edu.cn/GRID/data/GRID-GCN/GRB260320A/GRID_2603... GRID is a student-led project to monitor the transient gamma-ray sky with multiple detectors onboard different nanosatellites in the era of multi-messenger astronomy. For more information about GRID, please refer to the following references: https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4. View this GCN Circular online at https://gcn.nasa.gov/circulars/44109. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...