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Gravitational-wave (GW) signals from coalescing compact binaries carry enormous information about the source dynamics and are an excellent tool to probe unknown astrophysics and fundamental physics. Though the updated catalog of compact…

General Relativity and Quantum Cosmology · Physics 2022-03-10 N V Krishnendu , Frank Ohme

In binary-black-hole systems where the black-hole spins are misaligned with the orbital angular momentum, precession effects leave characteristic modulations in the emitted gravitational waveform. Here, we investigate where in the parameter…

General Relativity and Quantum Cosmology · Physics 2021-06-16 Rhys Green , Charlie Hoy , Stephen Fairhurst , Mark Hannam , Francesco Pannarale , Cory Thomas

The coalescence of massive black holes generates gravitational waves (GWs) that will be measurable by space-based detectors such as LISA to large redshifts. The spins of a binary's black holes have an important impact on its waveform.…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Ryan N. Lang , Scott A. Hughes

A typical stellar mass black hole with a lighter companion is shown to succumb to a chaotic precession of the orbital plane. As a result, the optimal candidates for the direct detection of gravitational waves by Earth based interferometers…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Janna Levin

The future space-based gravitational wave detector LISA will be able to measure parameters of coalescing massive black hole binaries, often to extremely high accuracy. Previous work has demonstrated that the black hole spins can have a…

General Relativity and Quantum Cosmology · Physics 2015-03-17 Ryan N. Lang , Scott A. Hughes , Neil J. Cornish

In relativistic gravity, a spinning pulsar will precess as it orbits a compact companion star. We have measured the effect of such precession on the average shape and polarization of the radiation from PSR B1534+12. We have also detected,…

Astrophysics · Physics 2009-11-10 I. H. Stairs , S. E. Thorsett , Z. Arzoumanian

Binary-black-hole orbits precess when the black-hole spins are mis-aligned with the binary's orbital angular momentum. The apparently complicated dynamics can in most cases be described as simple precession of the orbital angular momentum…

General Relativity and Quantum Cosmology · Physics 2020-07-22 Stephen Fairhurst , Rhys Green , Charlie Hoy , Mark Hannam , Alistair Muir

We present a simple method to track the precession of a black-hole-binary system, using only information from the gravitational-wave (GW) signal. Our method consists of locating the frame from which the magnitude of the $(\ell=2,|m|=2)$…

General Relativity and Quantum Cosmology · Physics 2011-08-12 Patricia Schmidt , Mark Hannam , Sascha Husa , P. Ajith

The properties of precessing, coalescing binary black holes are presently inferred through comparison with two approximate models of compact binary coalescence. In this work we show these two models often disagree substantially when…

General Relativity and Quantum Cosmology · Physics 2018-01-03 A. R. Williamson , J. Lange , R. O'Shaughnessy , J. A. Clark , P. Kumar , J. Calderón Bustillo , J. Veitch

Current searches for compact binary mergers by ground-based gravitational-wave detectors assume for simplicity the two bodies are not spinning. If the binary contains compact objects with significant spin, then this can reduce the…

General Relativity and Quantum Cosmology · Physics 2013-05-30 Duncan A. Brown , Andrew Lundgren , Richard O'Shaughnessy

Robustly measuring binary black hole spins via gravitational waves is key to understanding these systems' astrophysical origins, but remains challenging -- especially for high-mass systems, whose signals are short and dominated by the…

General Relativity and Quantum Cosmology · Physics 2025-11-20 Simona J. Miller , Maximiliano Isi , Katerina Chatziioannou , Vijay Varma , Sophie Hourihane

After eleven gravitational-wave detections from compact-binary mergers, we are yet to observe the striking general-relativistic phenomenon of orbital precession. Measurements of precession would provide valuable insights into the…

General Relativity and Quantum Cosmology · Physics 2020-09-02 Stephen Fairhurst , Rhys Green , Mark Hannam , Charlie Hoy

We consider the problem of searching for gravitational waves emitted during the inspiral phase of binary systems when the orbital plane precesses due to relativistic spin-orbit coupling. Such effect takes place when the spins of the binary…

General Relativity and Quantum Cosmology · Physics 2009-11-07 P. Grandclement , V. Kalogera , A. Vecchio

In dynamically formed binaries, the spins of the black holes tend to be misaligned with the system's orbital angular momentum. This causes the spins to precess and leads to an asymmetric emission of gravitational waves. The resulting…

General Relativity and Quantum Cosmology · Physics 2026-02-20 Jannik Mielke , Angela Borchers , Frank Ohme

Spin precession in merging black-hole binaries is a treasure trove for both astrophysics and fundamental physics. There are now well-established strategies to infer from gravitational-wave data whether at least one of the two black holes is…

General Relativity and Quantum Cosmology · Physics 2022-10-24 Viola De Renzis , Davide Gerosa , Geraint Pratten , Patricia Schmidt , Matthew Mould

The latest binary black hole population estimates argue for a subpopulation of unequal component mass binaries with spins that are likely small but isotropically distributed. This implies a non-zero probability of detecting spin-induced…

General Relativity and Quantum Cosmology · Physics 2025-02-14 Charlie Hoy , Stephen Fairhurst , Ilya Mandel

Gravitational wave detections offer insights into the astrophysical populations of black holes in the universe and their formation processes. Detections of binaries consisting of black holes lying outside the bulk distribution of the…

General Relativity and Quantum Cosmology · Physics 2023-06-12 Yumeng Xu , Eleanor Hamilton

Current searches for gravitational waves from compact-object binaries with the LIGO and Virgo observatories employ waveform models with spins aligned (or anti-aligned) with the orbital angular momentum. Here, we derive a new statistic to…

General Relativity and Quantum Cosmology · Physics 2016-07-14 Ian Harry , Stephen Privitera , Alejandro Bohé , Alessandra Buonanno

Compact binary coalescences are the most promising sources of gravitational waves (GWs) for ground based detectors. Binary systems containing one or two spinning black holes are particularly interesting due to spin-orbit (and eventual…

General Relativity and Quantum Cosmology · Physics 2014-07-02 Salvatore Vitale , Ryan Lynch , John Veitch , Vivien Raymond , Riccardo Sturani

Binary black holes on quasicircular orbits with spins aligned with their orbital angular momentum have been testbeds for analytic and numerical relativity for decades, not least because symmetry ensures that such configurations are…

General Relativity and Quantum Cosmology · Physics 2015-10-06 Davide Gerosa , Michael Kesden , Richard O'Shaughnessy , Antoine Klein , Emanuele Berti , Ulrich Sperhake , Daniele Trifirò
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