Scattering of Co-Current Surface Waves on an Analogue Black Hole
Léo-Paul Euvé, Scott Robertson, Nicolas James, Alessandro Fabbri, Germain Rousseaux
Abstract
We report on what is to our knowledge the first scattering experiment of surface waves on an accelerating transcritical flow, which in the analogue gravity context is described by an effective spacetime with a black-hole horizon. This spacetime has been probed by an incident co-current wave, which partially scatters into an outgoing countercurrent wave on each side of the horizon. The measured scattering amplitudes are compatible with the predictions of the hydrodynamical theory, where the kinematical description in terms of the effective metric is exact.
Topics & Concepts
PhysicsScatteringBlack hole (networking)SpacetimeContext (archaeology)HorizonScattering amplitudeClassical mechanicsEvent horizonQuantum electrodynamicsOpticsQuantum mechanicsRouting protocolComputer scienceComputer networkBiologyPaleontologyRouting (electronic design automation)AstronomyLink-state routing protocolQuantum Electrodynamics and Casimir EffectBlack Holes and Theoretical PhysicsCosmology and Gravitation Theories