GCN Circular 43871

Subject

GRID detection of GRB 260223A

Event

GRB 260223A

Date

2026-02-28T04:46:33Z (5 days ago)

From

GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn>

Via

Web form

GRID detection of GRB 260223A

Longhao Li, Xinyu Liu, Chenyu Wang report on behalf of the GRID Collaboration:

GRID-11B reports the detection of the long-duration GRB 260223A, which was also detected by Fermi GBM (GCN Circular 43808

), MASTER-OAFA (GCN Circular ), BALROG (GCN Circular ), DDOTI (GCN Circular ), COLIBRÍ(GCN Circular ), SVOM (GCN Circular ), Glowbug (GCN Circular )

The event was triggered with GRID on 2026-02-23 at 04:11:09 UTC. The measured burst duration (T90) in the 30-2000 keV range is approximately 22.2 +/- 3.0 seconds.

The GRID light curve of this event can be found at GRID_GRB260223A_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.