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Rotating Black Holes and the Density Cap: Spin Dependence of the Capped Core's Horizon Fraction

Year: 2026

Type: article

Abstract: At zero spin the capped radius is a fraction 2.667e-14 of the horizon radius. At a spin parameter of 0.998 the horizon has contracted to 1.570e+04 metres and the fraction rises to 5.016e-14, nearly doubling, while the equatorial static limit stays at 2.953e+04 metres and the core itself remains at 7.876e-10 metres. Rotation therefore brings the cap proportionally closer to the horizon but nowhere near it: even at the practical spin ceiling the core sits more than thirteen orders of magnitude inside the horizon. The conclusion disciplines speculation about spin-exposed cores. Computed from stated assumptions, not measured.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24125948

Author: Aldred, William Alexander

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7225810916

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