Searching for Strong Lenses in Kilo Degree Survey with Convolutional Neural Networks
Title: Searching for strong lenses in Kilo Degree survey with Convolutional Neural Networks
Speaker: LI Rui (SYSU)
Time: 14:00pm, Nov. 4 (Wednesday)
Location: Room 516 No.5 building , Xianlin campus (PMO, CAS)
Abstract: Strong lensing (SL) is the effect of the deformation of light of background galaxies due to the gravitational potential of intervening systems which act as lenses or “deflectors” (usually galaxies or galaxy groups/clusters). This effect, predicted by general relativity, manifests itself with the creation of spectacular arcs or multiple point images around the deflectors. SLs can measure the mass of the deflectors with much high accuracy than any of other methods, making it particularly suitable for studying a large number of astrophysical and cosmological open questions. However, at present, the known and confirmed SLs are just a few hundreds, far from enough for probing the scientific topics mentioned above with large statistical samples.