Instabilities in Close Neutron Star Binaries

Wilson, J.R.; Mathews, G.J.

doi:10.1103/PhysRevLett.75.4161

Instabilities in Close Neutron Star Binaries

J.R. Wilson
(
- LLNL, Livermore
)
,
G.J. Mathews
(
- LLNL, Livermore
)

1995

4 pages

Published in:

Phys.Rev.Lett. 75 (1995) 4161-4164

DOI:

10.1103/PhysRevLett.75.4161

View in:

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Abstract: (APS)

We report on a new analysis of instabilities in close neutron star binaries based upon (3 + 1) dimensional general relativistic numerical hydrodynamics calculations. When a realistic equation of state is employed, orbit calculations for two 1.45M⊙ neutron stars reveal surprising evidence that general relativistic effects may cause otherwise stable stars to individually collapse prior to merging. Also, the strong fields cause the last stable orbit to occur at a larger separation distance and lower frequency than post-Newtonian estimates.

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