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arxiv: 1007.1642 · v3 · pith:IP57UAI7new · submitted 2010-07-09 · 🌀 gr-qc

On the proximity of black hole horizons: lessons from Vaidya

classification 🌀 gr-qc
keywords horizonsblackholevaidyaapparentbehaviourcasecoincide
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In dynamical spacetimes, apparent and event horizons do not coincide. In this paper we propose a geometrical measure of the distance between those horizons and investigate it for the case of the Vaidya spacetime. We show that it is well-defined, physically meaningful, and has the expected behaviour in the near-equilibrium limit. We consider its implications for our understanding of black hole physics.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Cosmological coupled black holes immersed in dark sector

    gr-qc 2026-03 unverdicted novelty 6.0

    Derives an exact solution for a black hole in anisotropic dark sector FLRW background with mass co-evolving via radius-dependent coupling governed by the dark halo profile.

  2. Cosmological coupled black holes immersed in dark sector

    gr-qc 2026-03 unverdicted novelty 5.0

    Exact solution for a black hole whose mass co-evolves with Hubble expansion via radius-dependent coupling to an anisotropic dark halo in FLRW spacetime.