An RG-improved Schwarzschild-like black hole yields a multipole-independent SCC ratio at the 6% level, a bell-shaped Hawking temperature, and remains the most Schwarzschild-like among regular black hole models while shadow-degenerate with Hayward and Bonanno-Reuter at the 1% level.
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First-order eikonal formulas connect a scalarized black-hole metric to quasinormal modes, shadows, strong lensing, and grey-body factors via photon-sphere invariants in the weak-hair limit.
In the parametrized quasinormal mode framework, QNMs and GBFs depend on the order and polynomial power of potential modifications, with the QNM-GBF correspondence valid only in limited regimes.
citing papers explorer
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Renormalization-group improved Schwarzschild black hole: shadow, ringdown, and strong cosmic censorship
An RG-improved Schwarzschild-like black hole yields a multipole-independent SCC ratio at the 6% level, a bell-shaped Hawking temperature, and remains the most Schwarzschild-like among regular black hole models while shadow-degenerate with Hayward and Bonanno-Reuter at the 1% level.
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A First-Order Eikonal Framework for Quasinormal Modes, Shadows, Strong Lensing, and Grey-Body Factors in a Scalarized Black-Hole Metric
First-order eikonal formulas connect a scalarized black-hole metric to quasinormal modes, shadows, strong lensing, and grey-body factors via photon-sphere invariants in the weak-hair limit.
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Parametrized quasinormal modes, greybody factors and their correspondence
In the parametrized quasinormal mode framework, QNMs and GBFs depend on the order and polynomial power of potential modifications, with the QNM-GBF correspondence valid only in limited regimes.