STARITHM
Fermi GBM detects gamma-ray burst with conflicting localization classifications
AI Summary
Fermi GBM triggered on a gamma-ray burst at 2026-10-19T08:58:46.23Z (TrigID 814093131). The initial localization notice classified the source as Galactic Center with 90% confidence (RA 208.97°, Dec -6.88°, error 16.38°), but a subsequent rapid follow-up notice flagged the location as unreliable with 100% confidence, suggesting significant positional uncertainty. The burst shows moderate intensity (90-355 counts depending on timescale) with a hardness ratio of 138.26 in the initial detection, indicating a relatively hard spectrum. No ground-based follow-up observations or GCN circulars have been reported yet.
Measurements
| Event ID | 814093131 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Mon, 19 Oct 2026 08:58:46 GMT |
| Right ascension (J2000) | 208.9667° |
| Declination (J2000) | -6.8833° |
| Position error radius | 16.3833° |
| GCN notices | 3 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Mon, 19 Oct 2026 08:58:46 GMT
AI summary generated Mon, 19 Oct 2026 11:41:47 GMT.