TITLE:   GCN CIRCULAR
NUMBER:  44630
SUBJECT: GRID detection of GRB 260507A
DATE:    26/05/16 01:47:43 GMT
FROM:    GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn>

Longhao Li, Tingkai Sun, Chenyv Wang report on behalf of the GRID Collaboration:

GRID-09 reports the detection of the long-duration GRB 260507A, which was also detected by Fermi GBM (GCN Circular 44493), MASS-Cube (GRID 2.0,GCN Circular 44583).

The event was triggered with GRID on 2026-05-07 at 20:28:00 UTC. The measured burst duration (T90) in the 30-2000 keV range is approximately 12.1 +/- 2.8 seconds. 

The GRID light curve of this event can be found at https://mirrors.tuna.tsinghua.edu.cn/GRID/data/GRID-GCN/GRB260507A/GRID_260507A_ltcv.pdf.

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.