A diffeomorphic inversion re-parameterizes Kerr, Kerr-MOG, and Horndeski black hole observables in terms of the shadow radius, yielding model-specific deflection and luminosity scalings that break mass degeneracy.
Bamonti, A canonical and relational analysis of reference frames and gauge-fixing in general relativity, Classical and Quantum Gravity (2026)
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Shadow dependent phenomenology framework for rotating black hole metric
A diffeomorphic inversion re-parameterizes Kerr, Kerr-MOG, and Horndeski black hole observables in terms of the shadow radius, yielding model-specific deflection and luminosity scalings that break mass degeneracy.