The Effect of the Peculiar Motions of the Lens, Source and the Observer on the Gravitational Lensing Time Delay

Gihan Weerasekara, Thulsi Wickramasinghe, Chandana Jayaratne

An intervening galaxy acts as a gravitational lens and produces multiple images of a single source such as a remote galaxy. Galaxies have peculiar speeds in addition to the bulk mo…