GRB 260225D

General information

GRB 260225D is a likely short-duration gamma-ray burst detected by multiple instruments, including Glowbug, SVOM/GRM, GRID, and TERI, with Konus-Wind also reported as a detector. A preliminary Glowbug localization is given at RA=94.7 deg, Dec=13.8 deg with a 7.0 deg (95%) radius.

Wavelength coverage

• Gamma-rays / hard X-rays: Glowbug detection with ~2 s duration and ~62 sigma significance; SVOM/GRM trigger and spectral fit; ECLAIRs detection via shield >50 keV; GRID and TERI detections (43856, 43885, 43890, 44681). No observations were mentioned in soft X-rays, optical/UV, infrared, radio, or TeV gamma-rays.

Lightcurve and spectrum

SVOM/GRM reports a cutoff power-law spectrum with photon index -1.12 (+0.18/-0.15) and Epeak = 700 (+480/-250) keV over T0-2 to T0+4 s, and a reported 10–1000 keV fluence (43885).

Redshift

What’s special vs typical