24-28 September 2017
Kazimierz Dolny, Poland
Europe/Warsaw timezone

On the Calculation of the Time Delay Between Gravitationally Lensed Images When Peculiar Motions are Taken into Account

26 Sep 2017, 14:50
Kazimierz Dolny, Poland

Kazimierz Dolny, Poland

Dom Pracy Twórczej SDP ul. Małachowskiego 17 24-120 Kazimierz Dolny
Poster (preferred) Poster Session


Gihan Weerasekara (University of Colombo)


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)


Chandana Jayaratne (University of Colombo)

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