STARITHM
Fermi GBM detects gamma-ray burst trigger 812924348; classified as AGN with 81% confidence
AI Summary
Fermi GBM triggered on a gamma-ray transient on 2026-10-05 at 20:19:03.32 UTC with a significance of 10.5 sigma in the ground-based localization. The event shows a hardness ratio of 0.56 and burst intensity of 110, with energy range 44-280 keV. Machine learning classification identifies this as most likely an AGN (81% probability) rather than a classical GRB, with SGR Complex as secondary candidate (11% probability). The localization uncertainty is 5.64 degrees (ground) to 16.08 degrees (flight), centered near RA 339.89°/347.08°, Dec 5.54°/26.12°. No follow-up circulars have been issued at this time.
Measurements
| Event ID | 812924348 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Mon, 05 Oct 2026 20:19:03 GMT |
| Right ascension (J2000) | 339.89° |
| Declination (J2000) | 5.54° |
| Position error radius | 5.64° |
| GCN notices | 3 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Mon, 05 Oct 2026 20:19:03 GMT
AI summary generated Mon, 05 Oct 2026 20:27:40 GMT.