Gamma-ray burst kept flaring for record 27 days, study finds

A gamma-ray burst detected by NASA's Swift telescope in July 2022 kept producing X-ray flares for 27 days in its own time frame, astronomers said in a preprint. That is about 20 days longer than the previous record, according to the team led by the University of Birmingham. The researchers said they don't yet know what powered the late activity.