Massive scalar quasinormal modes in quasi-topological black holes become long-lived as scalar mass grows, while photon-sphere radius, shadow size, and ISCO exhibit moderate deviations from Schwarzschild.
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Applies sixth-order WKB to compute grey-body factors for test fields on generalized Proca black holes with effective de Sitter scale, finding that scalar mass and couplings raise barriers, suppress low-frequency transmission, and affect thermodynamics.
A new general solution in quantum-fluctuation-modified gravity yields Kiselev-type black holes with arbitrary surrounding fluids, plus checks on energy conditions, Hawking temperature, and bounds on the fluctuation parameter.
citing papers explorer
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Long-lived quasinormal modes, shadows and particle motion in four-dimensional quasi-topological gravity
Massive scalar quasinormal modes in quasi-topological black holes become long-lived as scalar mass grows, while photon-sphere radius, shadow size, and ISCO exhibit moderate deviations from Schwarzschild.
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Grey-Body Factors and Thermodynamics of Asymptotically de Sitter Black Holes in Generalized Proca Theory
Applies sixth-order WKB to compute grey-body factors for test fields on generalized Proca black holes with effective de Sitter scale, finding that scalar mass and couplings raise barriers, suppress low-frequency transmission, and affect thermodynamics.
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Kiselev Black holes in quantum fluctuation modified gravity
A new general solution in quantum-fluctuation-modified gravity yields Kiselev-type black holes with arbitrary surrounding fluids, plus checks on energy conditions, Hawking temperature, and bounds on the fluctuation parameter.