GRB 260316B

General information

GRB 260316B was detected as a likely long-duration gamma-ray burst on 2026-03-16 around 17:12:52–54 UT by multiple high-energy instruments, with localizations reported by Fermi/GBM and an IPN triangulation.

Wavelength coverage

Gamma-ray / hard X-ray: Detected by Fermi/GBM, AstroSat/CZTI (20–200 keV), SVOM/GRM (15–5000 keV), GECAM-B (~70–6000 keV), CALET/CGBM (40–1000 keV), Konus-Wind (20 keV–10 MeV), and Mars-Odyssey/HEND (via IPN triangulation report). No observations were mentioned in optical, near-IR, UV, soft X-ray, radio, gravitational waves, or neutrinos.

Lightcurve and spectrum

Redshift

What’s special vs typical

GCN 44166: Konus-Wind detection of GRB 260316B

2026-03-31T13:32:31.278Z | rev 0

GCN 44166: Konus-Wind detection of GRB 260316B (duplicate submission)

2026-03-31T13:32:31.278Z | rev 2

GCN 44165: Konus-Wind detection of GRB 260316B

2026-03-31T13:32:29.290Z | rev 0

GCN 44111: IPN triangulation of GRB 260316B

2026-03-25T13:33:31.803Z | rev 0

GCN 44100: GRB 260316B: CALET Gamma-Ray Burst Monitor detection

2026-03-24T07:55:16.464Z | rev 0

GCN 44040: GRB 260316B: GECAM-B observation

2026-03-17T15:46:38.970Z | rev 2

GCN 44039: GRB 260316B: SVOM/GRM observation

2026-03-17T15:43:47.613Z | rev 2

GCN 44035: GRB 260316B: AstroSat CZTI detection

2026-03-17T09:51:41.714Z | rev 2

GCN 44031: GRB 260316B: Fermi GBM Final Real-time Localization

2026-03-16T17:23:26.005Z | rev 2