[en] We estimate the fraction of gravitational lens systems among quasars that Gaia will detect. Modeling the population of intervening deflectors by means of a Singular Isothermal Sphere lens model, we find that a fraction of 0.6% of quasars will consist of multiple lensed QSO images. This leads to an expectation of nearly 3000 multiply imaged Quasars to be discovered by Gaia over the whole sky.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Finet, F.; Institut d'Astrophysique, Géophysique et Océanographie (AGO) - Université de Liège, Allée du 6 août, 17 - Bât. B5c B-4000 Liège 1 (Sart-Tilman), Belgique )
Elyiv, A.
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Detection of bright multiply imaged quasars with Gaia
