Quadratic curvature gravity on Einstein manifolds decouples into massless and non-Fierz-Pauli massive gravity sectors, enabling observational constraints on its parameters with noted tension for the Weyl term.
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EHT observations of Sgr A* constrain deviations from GR black hole solutions including regular BHs, string-inspired spacetimes, and BH mimickers, with some limits exceeding cosmological bounds.
A hairy black hole solution is constructed in Einstein-Gauss-Bonnet gravity and shown to be stable under odd parity perturbations when a scalar field profile parameter satisfies a positivity condition on the Regge-Wheeler potential.
citing papers explorer
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Non-Fierz-Pauli bimetric theory from quadratic curvature gravity on Einstein manifolds
Quadratic curvature gravity on Einstein manifolds decouples into massless and non-Fierz-Pauli massive gravity sectors, enabling observational constraints on its parameters with noted tension for the Weyl term.
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Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A$^*$
EHT observations of Sgr A* constrain deviations from GR black hole solutions including regular BHs, string-inspired spacetimes, and BH mimickers, with some limits exceeding cosmological bounds.
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Hairy black hole stability under odd parity perturbations in the Einstein-Gauss-Bonnet model
A hairy black hole solution is constructed in Einstein-Gauss-Bonnet gravity and shown to be stable under odd parity perturbations when a scalar field profile parameter satisfies a positivity condition on the Regge-Wheeler potential.