Black hole-neutron star mergers with massive neutron stars in numerical relativity

Abstract

We study the merger of black hole-neutron star (BH-NS) binaries in numerical relativity, focusing on the properties of the remnant disk and the ejecta, varying the mass of compactness of the NS and the mass and spin of the BH. We find that within the precision of our numerical simulations, the remnant disk mass and ejecta mass normalized by the NS baryon mass (${\hat{M}}_{\mathrm{rem}}$ and ${\hat{M}}_{\mathrm{eje}}$, respectively), and the cutoff frequency $f_{\mathrm{cut}}$ normalized by the initial total gravitational mass of the system at infinite separation approximately agree among the models with the same NS compactness $C_{\mathrm{NS}}=M_{\mathrm{NS}}/R_{\mathrm{NS}}$, mass ratio $Q=M_{\mathrm{BH}}/M_{\mathrm{NS}}$, and dimensionless BH spin ${\chi }_{\mathrm{BH}}$ irrespective of the NS mass $M_{\mathrm{NS}}$ in the range of $1.092$--$1.691M_{\odot }$. This result shows that the merger outcome depends sensitively on $Q$, ${\chi }_{\mathrm{BH}}$, and $C_{\mathrm{NS}}$ but only weekly on $M_{\mathrm{NS}}$. This justifies the approach of studying the dependence of NS tidal disruptions on the NS compactness by fixing the NS mass but changing the EOS. We further perform simulations with massive NSs of $M_{\mathrm{NS}}=1.8M_{\odot }$, and compare our results of ${\hat{M}}_{\mathrm{rem}}$ and ${\hat{M}}_{\mathrm{eje}}$ with those given by existing fitting formulas to test their robustness for more compact NSs. We find that the fitting formulas obtained in the previous studies are accurate within the numerical errors assumed, while our results also suggest that further improvement is possible by systematically performing more precise numerical simulations.

arXiv comment19 pages, 14 figures

References in corpus (87)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• The equation of state for nucleon matter and neutron star structure
• GW170817: Measurements of Neutron Star Radii and Equation of State
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Neutron Star Structure and the Equation of State
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• Accurate Evolutions of Orbiting Black-Hole Binaries Without Excision
• The Physics of Neutron Stars
• Gravitational wave extraction from an inspiraling configuration of merging black holes
• Properties of the binary neutron star merger GW170817
• On the Numerical Integration of Einstein's Field Equations
• Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
• INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
• Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Observation of gravitational waves from two neutron star-black hole coalescences
• Formation of Double Neutron Star Systems
• Tidal Deformabilities and Radii of Neutron Stars from the Observation of GW170817
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• The mass ejection from the merger of binary neutron stars
• Measuring the neutron star equation of state with gravitational wave observations
• Multi-messenger Bayesian parameter inference of a binary neutron-star merger
• Black Hole-Neutron Star Mergers: Disk Mass Predictions
• Remnant baryon mass outside of the black hole after a neutron star-black hole merger
• An HLLC Riemann Solver for Relativistic Flows: I. Hydrodynamics
• Simulating coalescing compact binaries by a new code SACRA
• An Extension of the Athena++ Code Framework for GRMHD Based on Advanced Riemann Solvers and Staggered-Mesh Constrained Transport
• Observational constraints on hyperons in neutron stars
• Compact binary evolutions with the Z4c formulation
• Fully General Relativistic Simulations of Black Hole-Neutron Star Mergers
• Notes on the integration of numerical relativity waveforms
• Dynamical mass ejection from black hole-neutron star binaries
• High-spin binary black hole mergers
• Relativistic simulations of black hole-neutron star coalescence: the jet emerges
• Evolving black hole-neutron star binaries in general relativity using pseudospectral and finite difference methods
• Gravitational waves from spinning black hole-neutron star binaries: dependence on black hole spins and on neutron star equations of state
• Relativistic Simulations of Black Hole-Neutron Star Mergers: Effects of black-hole spin
• Black hole-neutron star mergers at realistic mass ratios: Equation of state and spin orientation effects
• Models of Kilonova/macronova emission from black hole-neutron star mergers
• Neutron star-black hole mergers with a nuclear equation of state and neutrino cooling: Dependence in the binary parameters
• The mass distribution of Galactic double neutron stars
• Extracting equation of state parameters from black hole-neutron star mergers. I. Nonspinning black holes
• Estimates for Disk and Ejecta Masses Produced in Compact Binary Mergers
• Merger of black hole-neutron star binaries in full general relativity
• Merger of black hole and neutron star in general relativity: Tidal disruption, torus mass, and gravitational waves
• Radioactively Powered Emission from Black Hole-Neutron Star Mergers
• Black hole-neutron star mergers: effects of the orientation of the black hole spin
• Gravitational waves from black hole-neutron star binaries I: Classification of waveforms
• Gravitational waves from nonspinning black hole-neutron star binaries: dependence on equations of state
• Black hole-neutron star binary merger: Dependence on black hole spin orientation and equations of state
• Merger of black hole-neutron star binaries: nonspinning black hole case
• General relativistic simulations of black hole-neutron star mergers: Effects of magnetic fields
• GROWTH on S190814bv: Deep Synoptic Limits on the Optical/Near-Infrared Counterpart to a Neutron Star-Black Hole Merger
• Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity
• Black Hole-Neutron Star Mergers with a Hot Nuclear Equation of State: Outflow and Neutrino-Cooled Disk for a Low-Mass, High-Spin Case
• Prospects for gravitational-wave observations of neutron-star tidal disruption in neutron-star/black-hole binaries
• Mergers of Magnetized Neutron Stars with Spinning Black Holes: Disruption, Accretion and Fallback
• Intermediate-mass-ratio black hole binaries: intertwining numerical and perturbative techniques
• A new public code for initial data of unequal-mass, spinning compact-object binaries
• Distinguishing the nature of comparable-mass neutron star binary systems with multimessenger observations: GW170817 case study
• Equation of state effects in black hole-neutron star mergers
• Neutrino transport in black hole-neutron star binaries: neutrino emission and dynamical mass ejection
• Massive disk formation in the tidal disruption of a neutron star by a nearly extremal black hole
• First direct comparison of non-disrupting neutron star-black hole and binary black hole merger simulations
• Gravitational-wave cutoff frequencies of tidally disruptive neutron star-black hole binary mergers
• Numerical simulations of neutron star-black hole binaries in the near-equal-mass regime
• General relativistic simulations of black hole-neutron star mergers: Effects of tilted magnetic fields
• Dynamical ejecta from precessing neutron star-black hole mergers with a hot, nuclear-theory based equation of state
• Black hole-neutron star mergers for 10 solar mass black holes
• On the possibility of GW190425 being a black hole--neutron star binary merger
• Jet launching from binary black hole-neutron star mergers: Dependence on black hole spin, binary mass ratio and magnetic field orientation
• Gravitational waveforms from SpEC simulations : neutron star-neutron star and low-mass black hole-neutron star binaries
• Prospects for joint gravitational-wave and electromagnetic observations of neutron-star--black-hole coalescing binaries
• Neutron star tidal disruption in mixed binaries: the imprint of the equation of state
• Implementation of advanced Riemann solvers in a neutrino-radiation magnetohydrodynamics code in numerical relativity and its application to a binary neutron star merger
• Reanalysis of the binary neutron star mergers GW170817 and GW190425 using numerical-relativity calibrated waveform models
• Filling the Mass Gap: How Kilonova Observations can Unveil the Nature of the Compact Object Merging with the Neutron Star
• Properties of the remnant disk and the dynamical ejecta produced in low-mass black hole-neutron star mergers
• Constraint on the ejecta mass for a black hole-neutron star merger event candidate S190814bv
• Black hole-neutron star mergers using a survey of finite-temperature equations of state
• Constraining the Neutron Star Radius with Joint Gravitational-Wave and Short Gamma-Ray Burst Observations of Neutron Star-Black Hole Coalescing Binaries

Cited by in corpus (4)

• Multi-messenger observations in the Einstein Telescope era: binary neutron star and black hole - neutron star mergers
• Late-time non-thermal emission from mildly relativistic tidal ejecta of compact objects merger
• Black Hole-Neutron Star Binaries near Neutron Star Disruption Limit in the Mass Regime of Event GW230529
• Challenging a binary neutron star merger interpretation of GW230529