STARITHM
Fermi GBM detects gamma-ray burst with ambiguous Galactic Center/AGN classification
AI Summary
Fermi GBM triggered on a gamma-ray burst at 2026-10-06 07:59:53.79 UTC (TrigID 812966398). The event shows conflicting classifications across multiple detections: early alerts favor Galactic Center origin (85-93% probability), while a later detection suggests AGN (49% probability). Burst intensity varies from 100-326 counts with hardness ratios ranging from 2.25-61.92, indicating spectral variability. Position uncertainties range from 10.4° to 33.1°, and no ground-generated coordinates are available, limiting immediate localization for follow-up observations.
Measurements
| Event ID | 812966398 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Tue, 06 Oct 2026 07:59:53 GMT |
| Right ascension (J2000) | 183.6° |
| Declination (J2000) | 3.8333° |
| Position error radius | 10.4° |
| GCN notices | 4 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Tue, 06 Oct 2026 07:59:53 GMT
AI summary generated Tue, 06 Oct 2026 08:29:06 GMT.