N –точечные мультиплоскостные гравитационные линзы

Abstract

In the work an aggregate of massive points that is gravitational lens is researched. There is brief overview of the basic concepts and definitions in the first section. In the second section a gravitational lens formed by N points in a single plane is researched. The algorithm for constructing of caustics and critical curves for a lens with an arbitrary allocation of mass points is developed. Also there are caustics and critical curves that constructs by the algorithm for 3th and 4th points lenses with symmetric allocation of equal mass points. In the third section a gravitational lens formed by P planes is researched. The parameter