STARITHM
GRB 260920A detected by Fermi GBM, SVOM, and AstroSat
AI Summary
GRB 260920A was detected on September 20, 2026, featuring a T90 duration of around 17-23.5 seconds and a fluence of 2.20 x 10^-5 erg/cm^2 in the 10-1000 keV band. Follow-up observations by SVOM/GRM and AstroSat CZTI confirm the burst's multi-pulse structure and spectral characteristics.
Measurements
| Event | GRB 260920A |
|---|---|
| Event ID | 811593149 |
| Source | Fermi GBM |
| Alert type | GRB |
| Significance | high |
| Trigger time (UTC) | Sun, 20 Sep 2026 10:32:24 GMT |
| Right ascension (J2000) | 293.03° |
| Declination (J2000) | -31.84° |
| Position error radius | 1.09° (1.09°) |
| Position from | notice FERMI_GBM_FIN_POS |
| GCN notices | 10 |
| GCN circulars | 4 |
Every localisation reported in Circulars (1)
| Instrument | Of | Error | Circular |
|---|---|---|---|
| Fermi-GBM | burst | 1.10° (1-sigma statistical) | GCN 45658 |
Observations (2)
Values parsed from the Circular text; each row names its Circular.
| Time since trigger | Band | Value | Telescope | Circular |
|---|---|---|---|---|
| — | 20-200 keV | 234 ± 37 counts/s | AstroSat | GCN 45672 |
| — | 100-500 keV | 750 ± 60 counts/s | AstroSat | GCN 45672 |
Notices (1)
Fermi GBM — GRB · Sun, 20 Sep 2026 10:32:24 GMT
GCN Circulars (4)
GCN-45719 — GRB 260920A
· Thu, 24 Sep 2026 08:35:39 GMT
The Space Variable Objects Monitor (SVOM) detected a gamma-ray burst, GRB 260920A, on September 20, 2026, which was also observed by Fermi/GBM and AstroSat CZTI. The burst consisted of multiple pulses with a duration (T90) of 23.5 seconds and a fluence of 2.20 x 10^-5 erg/cm^2 in the 10-1000 keV band.
GCN-45693 — GRB 260920A
· Tue, 22 Sep 2026 15:40:18 GMT
The Glowbug gamma-ray telescope on the International Space Station detected a gamma-ray burst, GRB 260920A, which was also observed by Fermi/GBM and AstroSat. The burst had a complex multi-peak structure and a duration of 16.4 seconds.
GCN-45672 — GRB 260920A
· Mon, 21 Sep 2026 09:20:58 GMT
A gamma-ray burst, GRB 260920A, was detected by AstroSat CZTI on September 20, 2021, with multiple emission peaks and a T90 duration of 17 seconds. The burst was also detected by the Fermi GBM team, confirming its significance.
GCN-45658 — GRB 260920A
· Sun, 20 Sep 2026 10:42:45 GMT
nap
AI summary generated Thu, 05 Nov 2026 13:21:56 GMT.