Fermi-LAT Detection of a GeV Afterglow from a Compact Stellar Merger
Fermi-LAT Detection of a GeV Afterglow from a Compact Stellar Merger
It is usually thought that long-duration gamma-ray bursts (GRBs) are associated with massive star core collapse, whereas short-duration GRBs are associated with mergers of compact stellar binaries. The discovery of a kilonova associated with a nearby (350 Mpc) long-duration GRB-GRB 211211A, however, indicates that the progenitor of this long-duration GRB …