New and Robust Gravitational-Waveform Model for High-Mass-Ratio Binary Neutron Star Systems with Dynamical Tidal Effects

Abstract

For the analysis of gravitational-wave signals, fast and accurate gravitational-waveform models are required. These enable us to obtain information on the system properties from compact binary mergers. In this article, we introduce the NRTidalv3 model, which contains a closed-form expression that describes tidal effects, focusing on the description of binary neutron star systems. The model improves upon previous versions by employing a larger set of numerical-relativity data for its calibration, by including high-mass ratio systems covering also a wider range of equations of state. It also takes into account dynamical tidal effects and the known post-Newtonian mass-ratio dependence of individual calibration parameters. We implemented the model in the publicly available LALSuite software library by augmenting different binary black hole waveform models (IMRPhenomD, IMRPhenomX, and SEOBNRv5_ROM). We test the validity of NRTidalv3 by comparing it with numerical-relativity waveforms, as well as other tidal models. Finally, we perform parameter estimation for GW170817 and GW190425 with the new tidal approximant and find overall consistent results with respect to previous studies.

References in corpus (20)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Tidal Love numbers of neutron stars
• Constraining neutron star tidal Love numbers with gravitational wave detectors
• Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library
• Observation of gravitational waves from two neutron star-black hole coalescences
• An improved effective-one-body model of spinning, nonprecessing binary black holes for the era of gravitational-wave astrophysics with advanced detectors
• Towards models of gravitational waveforms from generic binaries II: Modelling precession effects with a single effective precession parameter
• Post-1-Newtonian tidal effects in the gravitational waveform from binary inspirals
• Dynamical Tides in General Relativity: Effective Action and Effective-One-Body Hamiltonian
• Modeling the dynamics of tidally-interacting binary neutron stars up to merger
• A new effective-one-body description of coalescing nonprecessing spinning black-hole binaries
• Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity
• Surrogate model for an aligned-spin effective one body waveform model of binary neutron star inspirals using Gaussian process regression
• Effective-one-body multipolar waveform for tidally interacting binary neutron stars up to merger
• Nonlinear-in-spin effects in effective-one-body waveform models of spin-aligned, inspiralling, neutron star binaries
• Exploring tidal effects of coalescing binary neutron stars in numerical relativity II: Longterm simulations
• Gravitational waveforms from SpEC simulations : neutron star-neutron star and low-mass black hole-neutron star binaries
• Relativistic effective action of dynamical gravitomagnetic tides for slowly rotating neutron stars

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• Challenging a binary neutron star merger interpretation of GW230529
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• Detectability and Parameter Estimation for Einstein Telescope Configurations with GWJulia
• Astrophysical constraints on neutron star $f$-modes with a nonparametric equation of state representation
• Auto-encoder model for faster generation of effective one-body gravitational waveform approximations
• Early Warning From Eccentric Compact Binaries: Template Initialization And Sub-dominant Mode Effects
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