STARITHM
Fermi GBM detected long GRB 261007B on Oct 7, 2026 at RA 222.2, Dec -54.1
AI Summary
The Fermi Gamma-ray Burst Monitor triggered on a likely long gamma-ray burst (GRB 261007B) at 13:20:18 UT on October 7, 2026. The on-ground localization places the burst at RA = 222.2°, Dec = -54.1° (J2000) with a statistical uncertainty of 9.1 degrees and 49° from the Fermi LAT boresight. Machine classification suggests AGN origin (90-92% probability) with secondary SGR Complex classification (4-6%), indicating potential contamination or misclassification. Follow-up observations and refined localization are recommended to confirm the GRB nature and enable multi-wavelength observations.
Measurements
| Event ID | 813072023 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | medium |
| Trigger time (UTC) | Wed, 07 Oct 2026 13:20:18 GMT |
| Right ascension (J2000) | 222.2° |
| Declination (J2000) | -54.1° |
| Position error radius | 9.07° |
| GCN notices | 6 |
| GCN circulars | 1 |
Notices (1)
Fermi GBM — GRB · Wed, 07 Oct 2026 13:20:18 GMT
GCN Circulars (1)
GCN-45836 — GRB 261007B
· Wed, 07 Oct 2026 13:30:45 GMT
The Fermi Gamma-ray Burst Monitor (GBM) detected a likely long gamma-ray burst (GRB 261007B) on October 7, 2026, at 13:20:18 UT. The event was located at RA = 222.2, Dec = -54.1 (J2000) with a statistical uncertainty of 9.1 degrees.
AI summary generated Wed, 07 Oct 2026 14:30:21 GMT.