HET seminar: Maria Rodriguez – University of Copenhagen

HET seminar: Maria Rodriguez

Speaker: Maria Rodriguez

Title: Near Horizon Extreme Binary Black Hole Geometries

Abstract: I will describe a new solution of four-dimensional vacuum General Relativity, that represents the near horizon region of the extreme (maximally spinning) binary black hole system with two identical extreme Kerr black holes held in equilibrium by a massless strut. This is the first example of a non-supersymmetric, near horizon extreme binary black hole geometry of two uncharged black holes. The black holes are co-rotating, and the solution is uniquely specified by the mass. The binary extreme system has finite entropy. The distance between the black holes is fixed, but there is a zero-distance limit where the objects collapse into one. This limiting geometry corresponds to the near horizon extreme Kerr (NHEK) black hole.