A method to measure a relative transverse velocity of source-lens-observer system using gravitational lensing of gravitational waves
arXiv:0908.0186 · doi:10.1103/PhysRevD.80.044009
Abstract
Gravitational waves propagate along null geodesics like light rays in the geometrical optics approximation, and they may have a chance to suffer from gravitational lensing by intervening objects, as is the case for electromagnetic waves. Long wavelength of gravitational waves and compactness of possible sources may enable us to extract information in the interference among the lensed images. We point out that the interference term contains information of relative transverse velocity of the source-lens-observer system, which may be obtained by possible future space-borne gravitational wave detectors such as BBO/DECIGO.
27 pages, 9 figures. Accepted for publication in Physical Review D
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- Mitigating the effect of the population model uncertainty on the strong lensing Bayes factor using nonparametric methods
- Modulations of Gravitational Waves due to Non-static Gravitational Lenses