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astro-ph.IM2014★ 12 cited
Creating images by adding masses to gravitational point lenses
Olivier Sète, Robert Luce, Jörg Liesen
A well-studied maximal gravitational point lens construction of S. H. Rhie produces images of a light source using deflector masses. The construction arises from a circu…
astro-ph.IM2013★ 12 cited
Sharp parameter bounds for certain maximal point lenses
Robert Luce, Olivier Sète, Jörg Liesen
Starting from an -point circular gravitational lens having images, Rhie (2003) used a perturbation argument to construct an -point lens producing images. In t…