Gravitational Waves from Long-Duration Simulations of the Dynamical Bar Instability

Details Gravitational Waves from Long-Duration Simulations of the Dynamical Bar Instability Gravitational Waves from Long-Duration Simulations of the Dynamical Bar Instability

1999-11-30

arxiv.org/abs/astro-ph/9911525v2

Phys.Rev.D62:064019,2000

Astronomy and Astrophysics

Astrophysics

24 pages, including 10 figures; revised figures and appendix, additional minor changes; to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.62.064019

Compact astrophysical objects that rotate rapidly may encounter the dynamical ``bar instability.'' The bar-like deformation induced by this rotational instability causes the object to become a potentially strong source of gravitational radiation. We have carried out a set of long-duration simulations of the bar instability with two Eulerian hydrodynamics codes. Our results indicate that the remnant of this instability is a persistent bar-like structure that emits a long-lived gravitational radiation signal.

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