Gravitational Wave Interference via Gravitational Lensing: Measurements of Luminosity Distance, Lens Mass, and Cosmological Parameters

Understand

The gravitational lensing of gravitational waves might cause beat patterns detectable by interferometers.

• The feature of this kind of signal is the existence of the beat pattern in the early inspiral phase, followed by a seemingly randomly changing profile.
• After the strain peaks for the first time, the signal takes the usual waveform and the strain peaks for the second time.
• Once this signal is detected, the actual magnification factors can be obtained, so the true luminosity distance of the binary system is known.