Dynamical Capture Binary Neutron Star Mergers. (arXiv:1208.5279v1 [astro-ph.HE])

Dynamical Capture Binary Neutron Star Mergers. (arXiv:1208.5279v1 [astro-ph.HE]):
We study dynamical capture, binary neutron star mergers as may arise in dense
stellar regions such as globular clusters. Using general-relativistic
hydrodynamics we find that these mergers can result in the prompt collapse to a
black hole or in the formation of a hypermassive neutron star, depending not
only on the neutron star equation of state, but also on impact parameter. We
also find that these mergers can produce accretion disks of up to a tenth of a
solar mass, and unbound ejected material of up to a few percent of a solar
mass. We comment on the gravitational radiation and electromagnetic transients
that these sources may produce.