A new covariant formulation of radial perturbations for imperfect fluids in GR yields a causality-imposed upper bound on the compactness of stable anisotropic stars.
Covariant Tolman-Oppenheimer-Volkoff equations. II. The anisotropic case
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Current and future observations can test whether dark compact objects are Kerr black holes or exotic alternatives, with null results strengthening the black hole paradigm.
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Radial adiabatic perturbations of stellar compact objects
A new covariant formulation of radial perturbations for imperfect fluids in GR yields a causality-imposed upper bound on the compactness of stable anisotropic stars.
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Testing the nature of dark compact objects: a status report
Current and future observations can test whether dark compact objects are Kerr black holes or exotic alternatives, with null results strengthening the black hole paradigm.