Stability analysis of the spin evolution fix points in inspiraling compact binaries with black hole, neutron star, gravastar, or boson star components
arXiv:2210.00285 · doi:10.1103/PhysRevD.103.084025
Abstract
Based on the secular spin evolution of black holes, neutron stars, gravastars, or boson stars in precessing compact binaries on eccentric orbit, we identify the aligned and more generic coplanar configurations of the spins and orbital angular momentum as fix points. Through a dynamical system analysis, we investigate their linear stability as function of the mass quadrupole parameter. Marginal stability holds for the binary configurations with both spins antialigned to the orbital angular momentum, for both spins aligned to the orbital angular momentum (with the exception of certain quadrupolar parameter ranges of neutron stars and boson stars), and for the extremal mass ratio. For equal masses, the configurations of one of the spins aligned and the other antialigned is stable for gravastar binaries, for neutron star binaries in the high quadrupolar parameter range, and for boson star binaries. For some unequal mass gravastar binaries, black hole binaries or neutron star binaries, a transition from stability to instability can occur during the inspiral, when one of the spins is aligned, while the other is antialigned to the orbital angular momentum. We discover a transitional instability regime during the inspiral of certain gravastar, neutron star, or boson star binaries with opposing spins. For coplanar configurations we find instabilities only for the gravastar - gravastar, boson star - boson star and black hole - boson star binaries. For a given spin configuration, marginal stability strongly depends on the value of the quadrupolar parameters. The stability region is larger for neutron star binaries than for black hole binaries, while the mixed systems have a restricted stability parameter region.
arXiv comment14 pages, 7 figures
References in corpus (24)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- GW190814: Gravitational Waves from the Coalescence of a 23 M Black Hole with a 2.6 M Compact Object
- Coalescing binary systems of compact objects to (post)$^{5/2}-Newtonian order. V. Spin Effects
- Spin effects in the inspiral of coalescing compact binaries
- Analysis of spin precession in binary black hole systems including quadrupole-monopole interaction
- Gravitational waves from inspiraling compact binaries: The quadrupole-moment term
- Quadrupole moments of rotating neutron stars
- Self-interaction spin effects in inspiralling compact binaries
- Spin-Orbit Resonance and the Evolution of Compact Binary Systems
- Tidal deformability and I-Love-Q relations for gravastars with polytropic thin shells
- Quadrupole moments of rotating neutron stars and strange stars
- Spin effects on gravitational waves from inspiraling compact binaries at second post-Newtonian order
- Precessional instability in binary black holes with aligned spins
- Spin effects in gravitational radiation backreaction III. Compact binaries with two spinning components
- Spin-spin effects in radiating compact binaries
- Spin effects in the phasing of gravitational waves from binaries on eccentric orbits
- Gravitational radiation reaction in compact binary systems: Contribution of the quadrupole-monopole interaction
- Second post-Newtonian radiative evolution of the relative orientations of angular momenta in spinning compact binaries
- Probing evolution of binaries influenced by the spin-orbit resonances
- Spinning compact binary dynamics and chameleon orbits
- Spinning compact binary inspiral: Independent variables and dynamically preserved spin configurations
- Spinning compact binary inspiral II: Conservative angular dynamics
- Spin and quadrupolar effects in the secular evolution of precessing compact binaries with black hole, neutron star, gravastar, or boson star components