Binary black holes in the heat of merger

Abstract

A black hole binary approaching merger undergoes changes in its inspiral rate as energy and angular momentum are lost from the orbits into the horizons. This effect strengthens as the black holes come closer. We use numerical relativity data to model this so-called tidal heating in the strong gravity regime. We present a frequency-domain approximant for nonspinning black hole binaries that accounts for tidal heating effects up to the merger frequency. The approximant includes horizon parameters that characterize the nature of the compact objects. By applying this model to a binary black hole baseline that incorporates tidal heating, one can construct a more accurate point-particle waveform, one that is devoid of finite-size effects of the component objects. We also discuss its ramifications in modeling binary neutron star systems.

References in corpus (25)

• Array Programming with NumPy
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Relativistic theory of tidal Love numbers
• Tests for the existence of horizons through gravitational wave echoes
• Observation of Gravitational Waves from the Coalescence of a $2.5\text{-}4.5M_{\odot }$ Compact Object and a Neutron Star
• High-accuracy numerical simulation of black-hole binaries: Computation of the gravitational-wave energy flux and comparisons with post-Newtonian approximants
• Improved methods for simulating nearly extremal binary black holes
• Tidal heating as a discriminator for horizons in extreme mass ratio inspirals
• The Science of the Einstein Telescope
• A new gravitational wave generation algorithm for particle perturbations of the Kerr spacetime
• Gravitational-Wave Phasing of Quasi-Circular Compact Binary Systems to the Fourth-and-a-Half post-Newtonian Order
• New and Robust Gravitational-Waveform Model for High-Mass-Ratio Binary Neutron Star Systems with Dynamical Tidal Effects
• Modeling horizon absorption in spinning binary black holes using effective worldline theory
• The SXS Collaboration's third catalog of binary black hole simulations
• Investigating tidal heating in neutron stars via gravitational Raman scattering
• The nonspinning binary black hole merger scenario revisited
• Towards establishing the presence or absence of horizons in coalescing binaries of compact objects by using their gravitational wave signals
• Constraining neutron star properties with a new equation of state insensitive approach
• Tidal heating as a direct probe of strangeness inside neutron stars
• Phenomenological gravitational waveform model of binary black holes incorporating horizon fluxes
• Tidal dissipation in binary neutron star inspirals from hyperon bulk viscosity: Phase modeling and parameter estimation bias
• On the Identification of Exotic Compact Binaries with Gravitational Waves: a Phenomenological approach