An extremely bright slow-rising afterglow from an off-axis jet in GRB 260310A

Yu-Han Yang, Roberto Ricci, Eleonora Troja +31

We present a multi-wavelength study of GRB 260310A, a nearby long-duration gamma-ray burst at $z\simeq 0.153$ associated with a broad-lined Type Ic supernova. Despite its modest pro…