STARITHM
Fermi GBM detected TGF event 812134961 on 2026-09-26 at 17:02:36 UTC
AI Summary
Fermi GBM triggered on a Terrestrial Gamma-ray Flash (TGF) classified with 100% confidence on 2026-09-26. The event shows a short duration burst (16 ms timescale) with moderate intensity (564 counts) and 5.5σ significance. Two position notices were generated with large localization uncertainties (~30 deg radius), consistent with the non-astrophysical TGF classification. No follow-up observations or GCN circulars have been issued.
Measurements
| Event ID | 812134961 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | low |
| Trigger time (UTC) | Sat, 26 Sep 2026 17:02:36 GMT |
| Right ascension (J2000) | 157.8° |
| Declination (J2000) | -54.4167° |
| Position error radius | 31.6° |
| GCN notices | 3 |
| GCN circulars | 0 |
Notices (1)
Fermi GBM — GRB · Sat, 26 Sep 2026 17:02:36 GMT
AI summary generated Sat, 26 Sep 2026 18:44:09 GMT.