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Exploring Black Hole Mimickers: Electromagnetic and Gravitational Signatures of AdS Black Shells

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arxiv 2405.08062 v2 pith:C77BYUB6 submitted 2024-05-13 gr-qc astro-ph.COhep-th

Suvendu Giri , Ulf Danielsson , Luis Lehner , Frans Pretorius This is my paper
classification gr-qcastro-ph.COhep-th
keywords blackgravitationalshellselectromagneticcompactholeholeslimit
verification ladder T0 review T1 audit T2 compute T3 formal
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We study electromagnetic and gravitational properties of AdS black shells (also referred to as AdS black bubbles) -- a class of quantum gravity motivated black hole mimickers, that in the classical limit are described as ultra compact shells of matter. We find that their electromagnetic properties are remarkably similar to black holes. We then discuss the extent to which these objects are distinguishable from black holes, both for intrinsic interest within the black shell model, and as a guide for similar efforts in other sub-classes of exotic compact objects (ECOs). We study photon rings and lensing band characteristics, relevant for very large baseline inteferometry (VLBI) observations, as well as gravitational wave observables -- quasinormal modes in the eikonal limit and the static tidal Love number for non-spinning shells -- relevant for ongoing and upcoming gravitational wave observations.

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Cited by 3 Pith papers

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

  1. Weak gravity at micron scales from dark bubble cosmology and its cosmological consequences

    hep-th 2025-11 conditional novelty 7.0 of 10

    Dark bubble cosmology predicts gravity weakens below L~10^-5 m, yielding V=-G4M(1/rho - 3L^2/(2rho^3)+...) and a radiation-only inflationary phase.

  2. Quantum nucleation of black hole mimickers via chaos dominated tunneling

    hep-th 2026-07 conditional novelty 6.5 of 10

    Chaos-dominated multichannel tunneling can eliminate exponential barrier suppression, enabling quantum nucleation of black shells and other black-hole mimickers.

  3. Black Shell Thermodynamics

    hep-th 2025-06 conditional novelty 6.0 of 10

    Assuming black shells exist, their AdS thermodynamics produce a phase diagram where a black-shell phase intervenes between thermal AdS and black holes, splitting the Hawking-Page transition.

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