General information
GRB 260104B is a likely long-duration gamma-ray burst detected by Fermi/GBM on 2026-01-04 05:49:57.62 UT, with a broad GBM localization around RA=87.42 deg, Dec=-29.65 deg (J2000). Optical follow-up by MASTER-Kislovodsk/MASTER-Net reported only upper limits.
Wavelength coverage
- Gamma-ray: Detection and localization by Fermi GBM.
- Optical: MASTER-Kislovodsk/MASTER-Net imaging with limiting magnitudes reaching ~16.9 mag (clear/unfiltered), reporting non-detections.
No observations were mentioned in radio, infrared, ultraviolet, or X-ray bands.
Lightcurve and spectrum
Redshift
What’s special vs typical