Two gamma-ray bursts of different types erupt four minutes apart
GRB 160425A may require a rethink of gamma-ray burst origins and classifications
Astronomers have reported an unprecedented gamma-ray burst event, GRB 160425A, in which two distinct bursts, one short and one long, erupted just four minutes apart. Detected in 2016 by the Neil Gehrels Swift Observatory, the event is described in a paper published in Nature Astronomy and may require a rethink of how gamma-ray bursts are classified and how they originate.