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arXiv · 1906.07203

Generalized Near Horizon Extreme Binary Black Hole Geometry

Jacob Ciafre·Shahar Hadar·Erin Rickenbach·Maria J. Rodriguez
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Abstract

We present a new vacuum solution of Einstein's equations describing the near horizon region of two neutral, extreme (zero-temperature), co-rotating, non-identical Kerr black holes. The metric is stationary, asymptotically near horizon extremal Kerr (NHEK), and contains a localized massless strut along the symmetry axis between the black holes. In the deep infrared, it flows to two separate throats which we call "pierced-NHEK" geometries: each throat is NHEK pierced by a conical singularity. We find that in spite of the presence of the strut for the pierced-NHEK geometries the isometry group SL(2,R)xU(1) is restored. We find the physical parameters and entropy.

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Jacob Ciafre, Shahar Hadar, Erin Rickenbach, Maria J. Rodriguez. 2019-06-17. Generalized Near Horizon Extreme Binary Black Hole Geometry. https://doi.org/10.1103/physrevd.100.044033

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