Gravitational wave lensing beyond general relativity: Birefringence, echoes, and shadows
José María Ezquiaga, Miguel Zumalacárregui
Abstract
The authors develop a general formalism to study gravitational wave lensing in alternative theories of gravity, predicting several new signatures, particularly birefringence due to lensing between different metric polarizations, which could serve to scrutinize such theories in hitherto unexplored regions. The authors also discuss looking for these signatures in the gravitational wave data.
Topics & Concepts
PhysicsGravitational waveGravitational lensGeneral relativityBirefringenceGravitational lensing formalismFormalism (music)Weak gravitational lensingClassical mechanicsTheoretical physicsGravitationAstrophysicsOpticsArtVisual artsRedshiftGalaxyMusicalPulsars and Gravitational Waves ResearchCosmology and Gravitation TheoriesBlack Holes and Theoretical Physics