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Gravitational wave extraction from an inspiraling configuration of merging black holes

Canonical reference. 71% of citing Pith papers cite this work as background.

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abstract

We present new techniqes for evolving binary black hole systems which allow the accurate determination of gravitational waveforms directly from the wave zone region of the numerical simulations. Rather than excising the black hole interiors, our approach follows the "puncture" treatment of black holes, but utilzing a new gauge condition which allows the black holes to move successfully through the computational domain. We apply these techniques to an inspiraling binary, modeling the radiation generated during the final plunge and ringdown. We demonstrate convergence of the waveforms and good conservation of mass-energy, with just over 3% of the system's mass converted to gravitional radiation.

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Binary black hole scattering with generic spins

gr-qc · 2026-06-23 · unverdicted · novelty 8.0

First NR-PM comparison for generic-spin black hole scattering reveals strong-field precessional turning-point structure with polar-angle sign change absent from perturbative PM.

A magnetar formation in binary neutron star merger

astro-ph.HE · 2026-06-09 · unverdicted · novelty 6.0

High-resolution GR neutrino-radiation MHD simulation of 1.35-1.35 Msun BNS merger shows KHI-driven B-field amplification to magnetar levels (~10^50 erg, factor >=316) in 3 ms post-merger.

Ringdown and lensing of triple systems

gr-qc · 2026-05-19 · conditional · novelty 6.0

Head-on black-hole mergers next to a companion show Doppler- and redshift-shifted ringdown, lensing magnification behind the lens, and delayed echo images, with only tentative signs of resonant mode excitation.

Scalar fields around black hole binaries in LIGO-Virgo-KAGRA

gr-qc · 2025-10-20 · unverdicted · novelty 6.0

Semi-analytic waveform model for scalar environments around black hole binaries is validated against numerical relativity and applied to LIGO-Virgo-KAGRA data to obtain upper limits on scalar densities with tentative evidence in GW190728.

Nonlinear Stability of Kerr-Sen Black Holes in Merging Binaries

gr-qc · 2026-06-23 · unverdicted · novelty 4.0

Head-on binary black hole simulations in EMDA theory show dilaton and axion fields persist through merger, indicating nonlinear stability of Kerr-Sen black holes and scalarization of initially unscalarized solutions.

Quasinormal modes of black holes and black branes

gr-qc · 2009-05-19 · unverdicted · novelty 2.0

Quasinormal modes are eigenmodes of dissipative gravitational systems whose spectra encode near-equilibrium transport coefficients in dual quantum field theories and enable tests of general relativity through gravitational wave observations.

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