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No observational proof of the black-hole event-horizon

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arxiv astro-ph/0207270 v1 pith:BZUMW2W2 submitted 2002-07-12 astro-ph

classification astro-ph
keywords proofblack-holeexistenceobservationalobservationsveryaccuratelyapplies
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Recently, several ways of obtaining observational proof of the existence of black-hole horizons have been proposed. We argue here that such proof is fundamentally impossible: observations can provide arguments, sometimes very strong ones, in favour of the existence of the event horizon, but they cannot prove it. This applies also to future observations, which will trace very accurately the details of the spacetime metric of a body suspected of being a black hole.

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Cited by 2 Pith papers

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

  1. Beyond Buchdahl's limit: bilayered stars and thin-shell configurations

    gr-qc 2024-11 conditional novelty 6.0 of 10

    Explicit bilayered and thin-shell GR models show that relaxing monotonic density or isotropy lets compactness approach Bondi's bound or even the black hole limit.

  2. Analytic thin disks and rings in a class of nonasymptotically flat static spacetimes

    gr-qc 2026-05 unverdicted novelty 5.0 of 10

    External quadrupolar distortion imprints on orbital dynamics and accretion structure in thin disks around deformed compact objects, with the radiating region's outer edge tied to the radiation-to-gas pressure transition.

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