Hell of a paper
Two whirling tidally-locked neutron stars each 20 km across spin into each other on a timescale of 1 or 2 miiliseconds.
A few fragments get spat into a spiral arm that evolves into a disk, and then that disk gets swallowed as the core of the two neutron stars collapses to a black hole.
The result, a GRB lasting a few tens of milliseconds...