Year: 2026
Type: article
Abstract: Two regular black hole cores are covered by the same exponentially localized anisotropic sector. A Bardeen seed with positive mass produces a de Sitter core, whereas an exponential hollow seed produces a Minkowski core. The comparison examines how adding or redistributing the finite mass carried by the hair changes horizons and capture from infinity. Holding the seed mass or the Arnowitt–Deser–Misner mass fixed defines different paths through the same family. Joint diagrams in seed mass and hair amplitude resolve regions with four horizons, cusp configurations, and two simultaneous double horizons. The analysis also compares rotating extensions of the Kerr geometry. Exchanging two accessible photon barriers of equal height preserves the critical impact parameter. A new outer horizon can instead hide the dominant barrier and produce a finite jump, even at fixed total mass. A sufficient bound establishes the static exterior weak energy condition for all positive seed masses at the studied ratios of core length to hair length. An explicit static magnetic action realizes the horizon differential as a covariant law with varying couplings and exhibits a failure of a necessary exterior propagation condition. Exterior approaches to the ring exclude a C 1 Bardeen or C 2 hollow extension with hair in the usual Cartesian Kerr–Schild smooth structure. The hairless hollow boundary admits a locally smooth disk completion. The results connect mass redistribution to horizon structure and capture, with explicit tests of the matter dynamics and rotating geometry.
Source: Nuclear Physics B
Author: Daulet Berkimbayev
Institution: Al-Farabi Kazakh National University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7160896445