Fermi GBM detects a likely short gamma-ray burst GRB 260820A with high significance probability of AGN origin.
AI Summary
On 20 August 2026, Fermi GBM detected a short gamma-ray burst (GRB 260820A) with high significance. It was localized at RA = 118.3, Dec = -6.1 (J2000) with a statistical uncertainty of 11.5 degrees. Follow-up observations indicate the most likely source to be an Active Galactic Nucleus (AGN).
Measurements
| Event ID | 808892684 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Thu, 20 Aug 2026 04:24:39 GMT |
| Right ascension (J2000) | 118.33° |
| Declination (J2000) | -6.1149° |
| Position error radius | 11.544° |
| GCN notices | 4 |
| GCN circulars | 1 |
Notices (1)
Fermi GBM — GRB · Thu, 20 Aug 2026 04:24:39 GMT
GCN Circulars (1)
GCN-45409 — GRB260820A
· Thu, 20 Aug 2026 07:41:32 GMT
The Fermi Gamma-ray Burst Monitor (GBM) detected a likely short gamma-ray burst (GRB 260820A) on 20 August 2026 at 04:24:39.99 UT. The event was located at RA = 118.3, Dec = -6.1 (J2000) with a statistical uncertainty of 11.5 degrees, and the angle from the Fermi LAT boresight was 56 degrees.
AI summary generated Fri, 21 Aug 2026 09:14:01 GMT.