short gamma-ray burst

A short gamma-ray burst (SGRB) is a gamma-ray burst lasting less than two seconds. Those lasting more than two seconds are termed long gamma-ray bursts (LGRBs). The events causing GRBs have been of research-interest since they were first detected. Current theory is that SGRBs are caused by neutron star mergers and neutron-star black-hole mergers, which also cause kilonovae and GW events. GW170817 was an instance of this, showing all three, and future such simultaneous detections could confirm the theory further.