Irrotational binary neutron stars in quasiequilibrium

Details Irrotational binary neutron stars in quasiequilibrium Irrotational binary neutron stars in quasiequilibrium

1999-06-21

arxiv.org/abs/gr-qc/9906088v1

Phys.Rev. D60 (1999) 087301

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 2 figures, revtex, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.60.087301

We report on numerical results from an independent formalism to describe the quasi-equilibrium structure of nonsynchronous binary neutron stars in general relativity. This is an important independent test of controversial numerical hydrodynamic simulations which suggested that nonsynchronous neutron stars in a close binary can experience compression prior to the last stable circular orbit. We show that, for compact enough stars the interior density increases slightly as irrotational binary neutron stars approach their last orbits. The magnitude of the effect, however, is much smaller than that reported in previous hydrodynamic simulations.

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