Reducing orbital eccentricity in initial data of binary neutron stars
arXiv:1405.6207 · doi:10.1103/PhysRevD.90.064006
Abstract
We develop a method to compute low-eccentricity initial data of binary neutron stars required to perform realistic simulations in numerical relativity. The orbital eccentricity is controlled by adjusting the orbital angular velocity of a binary and incorporating an approaching relative velocity of the neutron stars. These modifications improve the solution primarily through the hydrostatic equilibrium equation for the binary initial data. The orbital angular velocity and approaching velocity of initial data are updated iteratively by performing time evolutions over ~3 orbits. We find that the eccentricity can be reduced by an order of magnitude compared to standard quasicircular initial data, specifically from ~0.01 to <~0.001, by three successive iterations for equal-mass binaries leaving ~10 orbits before the merger.
20 pages, 12 figures, matched to the published version
References in corpus (15)
- Short-Duration Gamma-Ray Bursts
- Constraints on a phenomenologically parameterized neutron-star equation of state
- Inspiral, merger and ring-down of equal-mass black-hole binaries
- Systematic and statistical errors in a bayesian approach to the estimation of the neutron-star equation of state using advanced gravitational wave detectors
- Simulating coalescing compact binaries by a new code SACRA
- Reducing orbital eccentricity in binary black hole simulations
- Where post-Newtonian and numerical-relativity waveforms meet
- Tidal effects in binary neutron star coalescence
- Black hole-neutron star mergers at realistic mass ratios: Equation of state and spin orientation effects
- Longterm general relativistic simulation of binary neutron stars collapsing to a black hole
- Reducing eccentricity in black-hole binary evolutions with initial parameters from post-Newtonian inspiral
- Intermediate-mass-ratio black hole binaries: intertwining numerical and perturbative techniques
- Measuring orbital eccentricity and periastron advance in quasi-circular black hole simulations
- An efficient iterative method to reduce eccentricity in numerical-relativity simulations of compact binary inspiral
- Accuracy Issues for Numerical Waveforms
Cited by in corpus (53)
- Binary neutron-star mergers: a review of Einstein's richest laboratory
- Closed-form tidal approximants for binary neutron star gravitational waveforms constructed from high-resolution numerical relativity simulations
- Dynamical mass ejection from black hole-neutron star binaries
- Revisiting the lower bound on tidal deformability derived by AT 2017gfo
- Gravitational-wave phasing for low-eccentricity inspiralling compact binaries to 3PN order
- Measurability of the tidal deformability by gravitational waves from coalescing binary neutron stars
- Black hole-neutron star binary merger: Dependence on black hole spin orientation and equations of state
- General-relativistic resistive-magnetohydrodynamic simulations of binary neutron stars
- Interpreting Binary Neutron Star Mergers: Describing the Binary Neutron Star Dynamics, Modelling Gravitational Waveforms, and Analyzing Detections
- Binary Neutron Stars with Generic Spin, Eccentricity, Mass ratio, and Compactness - Quasi-equilibrium Sequences and First Evolutions
- Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity
- A new public code for initial data of unequal-mass, spinning compact-object binaries
- Gravitational-wave cutoff frequencies of tidally disruptive neutron star-black hole binary mergers
- Frequency-domain gravitational waveform models for inspiraling binary neutron stars
- Coalescence of black hole--neutron star binaries
- Self-consistent picture of the mass ejection from a one second-long binary neutron star merger leaving a short-lived remnant in general-relativistic neutrino-radiation magnetohydrodynamic simulation
- Exploring tidal effects of coalescing binary neutron stars in numerical relativity II: Longterm simulations
- Sub-radian-accuracy gravitational waves from coalescing binary neutron stars II: Systematic study on the equation of state, binary mass, and mass ratio
- Gravitational Wave Signal for Quark Matter with Realistic Phase Transition
- Structure of Stable Binary Neutron Star Merger Remnants: Role of Initial Spin
- Perturbative extraction of gravitational waveforms generated with Numerical Relativity
- Aligned spin neutron star-black hole mergers: a gravitational waveform amplitude model
- Second release of the CoRe database of binary neutron star merger waveforms
- Simulations of inspiraling and merging double neutron stars using the Spectral Einstein Code
- Gravitational waves and mass ejecta from binary neutron star mergers: Effect of large eccentricities
- Black hole merger simulations in wave dark matter environments
- Constructing Binary Neutron Star Initial Data with High Spins, High Compactness, and High Mass-Ratios
- Analytic models of the spectral properties of gravitational waves from neutron star merger remnants
- Numerical relativity simulations of the neutron star merger GW190425: microphysics and mass ratio effects
- The Eccentric Behavior of Inspiraling Compact Binaries
- Initial data for binary neutron stars with adjustable eccentricity
- The initial value problem as it relates to numerical relativity
- Implementation of advanced Riemann solvers in a neutrino-radiation magnetohydrodynamics code in numerical relativity and its application to a binary neutron star merger
- Effect of spin on the inspiral of binary neutron stars
- Binary neutron star merger simulations with different initial orbital frequency and equation of state
- Quasi-equilibrium configurations of binary systems of dark matter admixed neutron stars
- Full 3D Numerical Relativity Simulations of Neutron Star -- Boson Star Collisions with BAM
- Initial-data contribution to the error budget of gravitational waves from neutron-star binaries
- A note on gravitational wave extraction from binary simulations
- Entropy-limited higher-order central scheme for neutron star merger simulations
- Modeling Mergers of Known Galactic Systems of Binary Neutron Stars
- Evolution of bare quark stars in full general relativity: Single star case
- Systematic effects from black hole-neutron star waveform model uncertainties on the neutron star equation of state
- Black-Hole Neutron Star Simulations with the BAM code: First Tests and Simulations
- Signature of hadron-quark crossover in binary-neutron-star mergers
- Three dimensional distorted black holes: using the Galerkin-Collocation method
- Superfluid dark stars
- Dependence of postmerger properties on the thermal heating efficiency in neutron star mergers
- Methods for relativistic self-gravitating fluids: From binary neutron stars to black hole-disks and magnetized rotating neutron stars
- Reducing orbital eccentricity in initial data of black hole--neutron star binaries in the puncture framework
- Insights into Binary Neutron Star Merger Simulations: A Multi-Code Comparison
- Eccentricity reduction of binary neutron star initial data with the entropy based flux limiting scheme
- Incorporating a radiative hydrodynamics scheme in the numerical-relativity code BAM