The most intense explosions in the universe come in two varieties. One type lasts several seconds, and the others are gone in less than a second.
Until now, astronomers had not pinned down the sources of the short-duration bursts.
New observations show convincingly that they are created by collisions of two very dense objects, likely neutron stars or a neutron star and a black hole, as theory had predicted.
I think we've linked up three or four "solutions" to this problem, so (in my oh-so-greatly-informed opinion) this one is probably also a "wait-and-see" sort of thing.