Fermi GBM detects likely long GRB 260728A with significant gamma-ray burst intensity.
AI Summary
On July 28, 2026, Fermi GBM detected a long gamma-ray burst (GRB 260728A) at RA = 262.86, Dec = -48.57 (J2000) with a statistical uncertainty of 3.53 degrees. The event's significance suggests it originated from an astrophysical source, likely an active galactic nucleus (AGN), with a secondary probability of being associated with a Soft Gamma Repeater (SGR). Follow-up observations are recommended due to the high likelihood of this being an astrophysical event.
Measurements
| Event ID | 806906226 |
|---|---|
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Tue, 28 Jul 2026 04:37:01 GMT |
| Right ascension (J2000) | 262.86° |
| Declination (J2000) | -48.57° |
| Position error radius | 3.53° |
| GCN notices | 4 |
| GCN circulars | 1 |
Notices (1)
Fermi GBM — GRB · Tue, 28 Jul 2026 04:37:01 GMT
GCN Circulars (1)
GCN-45237 — GRB 260728A
· Tue, 28 Jul 2026 06:52:53 GMT
On 28 July 2026, the Fermi Gamma-ray Burst Monitor (GBM) detected a likely long gamma-ray burst (GRB 260728A) at coordinates RA = 262.86, Dec = -48.57 (J2000) with a statistical uncertainty of 3.53 degrees. The event was triggered at 04:37:01.48 UT and is significant for further astronomical study.
AI summary generated Wed, 29 Jul 2026 08:49:22 GMT.