A Near Horizon Extreme Binary Black Hole Geometry

Ciafre, Jacob; Rodriguez, Maria J.

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A Near Horizon Extreme Binary Black Hole Geometry

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Rodriguez, Maria J.
Gravitation and Black Hole Theory, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Ciafre, J., & Rodriguez, M. J. (in preparation). A Near Horizon Extreme Binary Black Hole Geometry.

Zitierlink: https://hdl.handle.net/21.11116/0000-0001-406E-C

Zusammenfassung

A new solution of four-dimensional vacuum General Relativity is presented. It describes 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, asymptotically flat 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.