Short-duration GRB 250221A Afterglow Driven by Two-Component Jets from the merger of a compact star

Xiao Tian, Hou-Jun Lü, Xiao-Xuan Liu +4

GRB 250221A is a short gamma-ray burst (GRB) at redshift $z=0.768$, with a duration of 1.8 s and no extended emission in either Swift/Burst Alert Telescope or Konus-Wind bands. A r…