Multimessenger tests of gravity with weakly lensed gravitational waves
Suvodip Mukherjee, B. D. Wandelt, Joseph Silk
Abstract
General relativity (GR) predicts concordant trajectories for photons and gravitational waves (GWs). We propose a new multimessenger avenue (GW-CMB-CMB) to prove this aspect of fundamental physics by cross-correlating the GW signal of astrophysical origin with the lensing field derived from the cosmic microwave background (CMB). This new window will allow robust measurement of the prediction from GR with high signal-to-noise ratio and will be able to unveil the true nature of gravity using the GW sources detected by missions such as the Laser Interferometer Space Antenna, Einstein Telescope, and Cosmic Explorer.
Topics & Concepts
Cosmic microwave backgroundPhysicsGravitational waveInterferometryGravitational lensGeneral relativityCOSMIC cancer databaseAstrophysicsAstronomyCosmologyCosmic background radiationRedshiftTheoretical physicsGalaxyOpticsAnisotropyPulsars and Gravitational Waves ResearchCosmology and Gravitation TheoriesRadio Astronomy Observations and Technology