GRB 260530C

General information

GRB 260530C is reported by SVOM/ECLAIRs as a transient detected via on-ground search of event-by-event data, with a best Image Trigger SNR of 6.8 and a 90% localization radius of 12.8 arcmin.

Wavelength coverage

• Gamma-ray / hard X-ray: Detected by SVOM/ECLAIRs (4–120 keV and 8–120 keV reported).
• X-ray: No observations reported; SVOM/MXT target-of-opportunity follow-up requested.
• Optical: No observations reported; SVOM/VT target-of-opportunity follow-up requested. No observations are mentioned in radio, infrared, ultraviolet, or very-high-energy gamma rays.

Lightcurve and spectrum

The burst shows a double-peak structure with an estimated duration of ~25 s (4–120 keV). A time-averaged 5–120 keV spectrum from T0−20.5 s to T0+4.5 s is fit by a power law with alpha = -1.10 ± 0.16; the derived 4–120 keV fluence is (3.2 +0.3/−1.0)×10^-7 erg/cm^2 and photon flux is 0.26 +0.02/−0.08 ph/cm^2/s.

Redshift

What’s special vs typical

The event was found through an on-ground search (rather than an on-board trigger), with modest significance (SNR 6.8) and a reported double-peaked profile; no counterpart or redshift information is available yet.