Gravitational Spin-Orbit Coupling through Third-Subleading Post-Newtonian Order: From First-Order Self-Force to Arbitrary Mass Ratios
Andrea Antonelli, Chris Kavanagh, Mohammed Khalil, Jan Steinhoff, Justin Vines
Abstract
Exploiting simple yet remarkable properties of relativistic gravitational scattering, we use first-order self-force (linear-in-mass-ratio) results to obtain arbitrary-mass-ratio results for the complete third-subleading post-Newtonian (4.5PN) corrections to the spin-orbit sector of spinning-binary conservative dynamics, for generic (bound or unbound) orbits and spin orientations. We thereby improve important ingredients of models of gravitational waves from spinning binaries, and we demonstrate the improvement in accuracy by comparing against aligned-spin numerical simulations of binary black holes.
Topics & Concepts
PhysicsSpinningSpin (aerodynamics)Mass ratioGravitationBinary numberGravitational waveOrder (exchange)Coupling (piping)Circular orbitOrbit (dynamics)Newtonian fluidClassical mechanicsAstrophysicsThermodynamicsEngineeringMechanical engineeringMathematicsAerospace engineeringEconomicsArithmeticFinancePulsars and Gravitational Waves ResearchAstrophysical Phenomena and ObservationsGamma-ray bursts and supernovae