P60: Rotational Stability of CCEGA Black Stars — Light Ring Damping Overwhelms Ergoregion Instability

We establish rotational stability of CCEGA black stars despite the ergoregion being exterior to the object (C ≈ 0.63–1.27, P51 v2.0). The light ring damping rate exceeds the ergoregion instability rate by a factor γ_LR/γ_ergo ~ 10⁹–10¹². The suppression arises from geometric factors (δr/r_e)⁵ in the ergoregion-surface overlap. CCEGA black stars are rotationally stable for all masses in the range 4.56–14.75 M☉.

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-05-23
DOI
https://doi.org/10.5281/zenodo.20359464
Primary Topic
Stellar, planetary, and galactic studies
Type
preprint
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preprint

P60: Rotational Stability of CCEGA Black Stars — Light Ring Damping Overwhelms Ergoregion Instability

Marc López Sánchez
Zenodo (CERN European Organization for Nuclear Research)
Stellar, planetary, and galactic studies
preprint

P60: Rotational Stability of CCEGA Black Stars — Light Ring Damping Overwhelms Ergoregion Instability

Marc López Sánchez
preprint en

Abstract

We establish rotational stability of CCEGA black stars despite the ergoregion being exterior to the object (C ≈ 0.63–1.27, P51 v2.0). The light ring damping rate exceeds the ergoregion instability rate by a factor γ_LR/γ_ergo ~ 10⁹–10¹². The suppression arises from geometric factors (δr/r_e)⁵ in the ergoregion-surface overlap. CCEGA black stars are rotationally stable for all masses in the range 4.56–14.75 M☉.

Zenodo (CERN European Organization for Nuclear Research)
Stellar, planetary, and galactic studies
DOIOpen Access PDFOpenAlex
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P60: Rotational Stability of CCEGA Black Stars — Light Ring Damping Overwhelms Ergoregion Instability — Marc López Sánchez · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS