STARITHM
Short GRB 261008A detected by Fermi GBM with 12.4° localization uncertainty
AI Summary
Fermi GBM triggered on a likely short gamma-ray burst (GRB 261008A) on October 8, 2026 at 18:19:08 UT. The burst was localized to RA=310.4°, Dec=11.1° with a statistical uncertainty of 12.4 degrees and a burst duration of ~0.256 seconds. Machine classification suggests AGN origin (84% probability) with secondary SGR Complex classification (10%), though the GCN circular identifies it as a likely short GRB; follow-up observations and refined localization are warranted to confirm the source nature.
Measurements
| Event ID | 813176353 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Thu, 08 Oct 2026 18:19:08 GMT |
| Right ascension (J2000) | 310.37° |
| Declination (J2000) | 11.08° |
| Position error radius | 12.44° |
| GCN notices | 4 |
| GCN circulars | 1 |
Notices (1)
Fermi GBM — GRB · Thu, 08 Oct 2026 18:19:08 GMT
GCN Circulars (1)
GCN-45866 — GRB 261008A
· Thu, 08 Oct 2026 18:29:38 GMT
The Fermi Gamma-ray Burst Monitor (GBM) detected a likely short gamma-ray burst (GRB 261008A) on October 8, 2026, at 18:19:08 UT. The event was located at RA = 310.4, Dec = 11.1 (J2000) with a statistical uncertainty of 12.4 degrees.
AI summary generated Thu, 08 Oct 2026 20:31:51 GMT.