Fermi GBM detects a high-significance gamma-ray burst likely originating from a terrestrial gamma-ray flash (TGF).
AI Summary
The Fermi Gamma-Ray Burst Monitor detected an event classified as a TGF with high probability. Key parameters include an intensity of 517 and significant localization error. No additional follow-up observations have been reported.
Measurements
| Event ID | 814938473 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Thu, 29 Oct 2026 03:47:48 GMT |
| Right ascension (J2000) | 258.3° |
| Declination (J2000) | 21.3833° |
| Position error radius | 27.7333° |
| GCN notices | 2 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Thu, 29 Oct 2026 03:47:48 GMT
AI summary generated Thu, 29 Oct 2026 06:01:18 GMT.