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Two remarks on near-horizon geometries

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arxiv 1209.4042 v1 pith:SUQURDZP submitted 2012-09-18 gr-qc hep-th

Two remarks on near-horizon geometries

classification gr-qc hep-th
keywords near-horizonabelianblackdegenerateenhancedextremegallowaygeometries
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We show that any extreme black hole with an orthogonally transitive abelian isometry group has a near-horizon geometry with enhanced symmetry. We also point out a simple proof of the horizon topology theorem of Galloway and Schoen for degenerate horizons.

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  1. Charged and rotating near-horizon geometries in five dimensions

    hep-th 2026-06 conditional novelty 7.0

    New analytic charged rotating near-horizon geometries in 5D Einstein-Maxwell are constructed and shown to be the most general extremal rotating horizons with constant co-rotating electric field under Sasakian structure.