Dynamical friction of black holes in ultralight dark matter
Rodrigo Vicente, Vitor Cardoso
Abstract
In this work we derive simple closed-form expressions for the dynamical friction acting on black holes moving through ultralight (scalar field) dark matter, covering both nonrelativistic and relativistic black hole speeds. Our derivation is based on long known scattering amplitudes in black hole spacetimes, it includes the effect of black hole spin and can be easily extended to vector and tensor light fields. Our results cover and complement recent numerical and previous nonrelativistic treatments of dynamical friction in ultralight dark matter.
Topics & Concepts
PhysicsBlack hole (networking)Classical mechanicsSpin-flipDark matterTensor (intrinsic definition)Work (physics)Cover (algebra)ScatteringAmplitudeComplement (music)Dry frictionQuantum electrodynamicsExtremal black holeWhite holeDynamical system (definition)Rotating black holeDynamical frictionSimple (philosophy)Connection (principal bundle)Scattering amplitudeSpin (aerodynamics)Hawking radiationParticle (ecology)Dynamical systems theoryAstrophysical Phenomena and ObservationsQuantum Electrodynamics and Casimir EffectPulsars and Gravitational Waves Research