Speaker
Gihan Weerasekara
(University of Colombo)
Description
An intervening galaxy acts like a gravitational lens and produce multiple images of a single source such as a remote galaxy. Such galaxies have peculiar speeds in addition to the bulk motion appearing due to the expansion of the universe. There is a difference in light arriving time known as the time delay. We calculate more realistic time delays when such peculiar motions are taken into consideration.
Primary authors
Gihan Weerasekara
(University of Colombo)
Thulsi Wickramasinghe
(The College of New Jersey)
Co-author
Chandana Jayaratne
(University of Colombo)
