GRB 260214B

General information

GRB 260214B / EP260214b was detected by SVOM/ECLAIRs via an offline targeted search (too faint for onboard trigger), and an optical counterpart was observed by SVOM/VT several hours later.

Wavelength coverage

• Gamma/X-ray (4–120 keV): SVOM/ECLAIRs detection with localization, spectrum, and flux.
• Optical (400–1000 nm): SVOM/VT detections in VT_B and VT_R with AB magnitudes and no significant variability over 5.81–8.08 hr. No radio, UV, IR, or high-energy (GeV/TeV) observations are mentioned.

Lightcurve and spectrum

Redshift

A redshift of z=1.208 is mentioned as an assumed value (cited by SVOM/ECLAIRs from Le Floch et al., GCN 43749) and used to estimate rest-frame parameters.

What’s special vs typical

The burst was faint enough to be missed onboard and recovered through an offline targeted search; estimated Ep,z and E_iso (using the assumed redshift) place it toward the low end of typical long-GRB ranges while remaining consistent with the Amati relation.