General information
GRB 260310B is reported as a likely long GRB triggered by Fermi/GBM on 2026-03-10 21:41:23 UT, with additional high-energy detections by GECAM-B and Insight-HXMT/HE. Early optical follow-up by MASTER-Net reports only upper limits.
Wavelength coverage
- Gamma-ray / hard X-ray: Detected by Fermi/GBM; GECAM-B reports 70–6000 keV lightcurve and T90; Insight-HXMT/HE reports 60–900 keV lightcurve, T90, peak rate, and total counts.
- Optical: MASTER-Kislovodsk observed multiple fields starting ~552 s after trigger with clear-band upper limits to ~16.9 mag.
No observations are mentioned in radio, infrared, ultraviolet, soft X-ray, or TeV bands.
Lightcurve and spectrum
Redshift
What’s special vs typical