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

Abstract

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.

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

Cited by in corpus (38)

• Relativistic Fluid Dynamics: Physics for Many Different Scales
• The astrophysical gravitational wave stochastic background
• Gravitational waves from instabilities in relativistic stars
• Numerical Relativity: A review
• Accurate evolutions of inspiralling and magnetized neutron-stars: equal-mass binaries
• Relativistic Magnetohydrodynamics In Dynamical Spacetimes: Numerical Methods And Tests
• Accurate simulations of the dynamical bar-mode instability in full General Relativity
• Dynamical instability of differentially rotating stars
• Dynamical Rotational Instability at Low $T/W$
• Gravitational Waves from Gravitational Collapse
• Three-dimensional simulations of stellar core collapse in full general relativity: Nonaxisymmetric dynamical instabilities
• One-Armed Spiral Instability in Differentially Rotating Stars
• Unexpected Dynamical Instabilities In Differentially Rotating Neutron Stars
• Relativistic fluid dynamics: physics for many different scales
• Listening to the Universe with Gravitational-Wave Astronomy
• On the Shear Instability in Relativistic Neutron Stars
• Dynamical Bar Instability in Rotating Stars: Effect of General Relativity
• Low T/|W| dynamical instability in differentially rotating stars: Diagnosis with canonical angular momentum
• Evolution of Differentially Rotating Supermassive Stars to the Onset of Bar Instability
• Gravitational wave background from sub-luminous GRBs: prospects for second and third generation detectors
• Nonlinear Development of the Secular Bar-mode Instability in Rotating Neutron Stars
• Dynamical instability of new-born neutron stars as sources of gravitational radiation
• AMR simulations of the low T/|W| bar-mode instability of neutron stars
• Gravitational Waves from the Dynamical Bar Instability in a Rapidly Rotating Star
• Numerical evolution of secular bar-mode instability induced by the gravitational radiation reaction in rapidly rotating neutron stars
• Black hole formation through fragmentation of toroidal polytropes
• Quasi-equilibrium models for triaxially deformed rotating compact stars
• Dynamical Bar-Mode Instability in Differentially Rotating Magnetized Neutron Stars
• Uniformly rotating, axisymmetric and triaxial quark stars in general relativity
• The Formation of Supermassive Black Holes and the Evolution of Supermassive Stars
• Low-$T/|W|$ instabilities in differentially rotating proto-neutron stars with magnetic fields
• Dynamical bar instability in a relativistic rotational core collapse
• Faraday resonance in dynamical bar instability of differentially rotating stars
• The Kinematic Richness of Star Clusters - II. Stability of Spherical Anisotropic Models with Rotation
• Populating Stellar Orbits Inside a Rotating, Gaseous Bar
• On the foundations of general relativistic celestial mechanics
• Amplification of azimuthal modes with odd wave numbers during dynamical bar-mode growth in rotating stars
• A gravitational-wave perspective on neutron-star seismology