GRAVITATIONAL LENSING OBSERVATIONS OF QUASARS WITH THE 4-m ILMT

Gravitational lensing may enrich our view of the distant Universe and affect our physical understanding of various classes of extragalactic objects. The great interest in gravitational lensing comes from the fact that this phenomenon can be used as an astrophysical and cosmological tool to solve a number of scientific problems. Quasars and gravitationally
lensed quasars (GLQs) are of particular interest since they sufficiently probe the deep Universe and can be bright enough to be detected and investigated. But to do this successfully we need to know how many multiply imaged quasars we will be able to detect in the ILMT field of view, how to analyze the observational data, their sensitivity, what problems and
challenges await us. In this poster, we try to briefly highlight these points: why GLQs are interesting to us, what objects should we observe, how many of them, etc? According to our last estimations, the number of quasars which may be detected with the ILMT is ~ 6700. So, at least 15 of them should consist of multiply imaged quasars.