STARITHM
Fermi GBM detects gamma-ray burst with uncertain localization near Galactic Center
AI Summary
Fermi GBM triggered on a gamma-ray burst at 2026-10-10 04:36:54 UTC (TrigID 813299819). The first three refined position notices classify the source as Galactic Center with 83-96% confidence, though localization uncertainty increases over successive refinements (5.4° to 30.3° error radius). A fourth notice flags the location as unreliable. The burst shows variable intensity (48-468 counts) and hardness ratios (0-73.29), with timescales ranging from 16 ms to 4.1 s, suggesting either a weak or poorly-localized event. No ground-generated positions or follow-up circulars are currently available.
Measurements
| Event ID | 813299819 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Sat, 10 Oct 2026 04:36:54 GMT |
| Right ascension (J2000) | 193.8167° |
| Declination (J2000) | -4.85° |
| Position error radius | 5.4167° |
| GCN notices | 5 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Sat, 10 Oct 2026 04:36:54 GMT
AI summary generated Sat, 10 Oct 2026 09:26:59 GMT.