Speaker
Otto Hannuksela
(The Chinese University of Hong Kong (CUHK))
Description
Einstein's relativity postulates that, similarly to light, gravitational waves can be gravitationally lensed by massive intervening objects such as galaxies, dark-matter subhalos, and compact lenses. Such gravitational lensing encodes potentially detectable signatures in the gravitational waves LISA can detect. On the one hand, the direct detection of such signatures would promise a unique avenue for science case studies. On the other hand, neglecting gravitational-wave weak lensing could lead to biased cosmological studies. Here, I review some basic results of gravitational-wave lensing relevant to LISA.