Derives partial-wave scalar absorption in Klein-Gordon separable Johannsen spacetimes and identifies finite-frequency spectra as a probe of radial propagation sectors beyond area law and null capture.
Black hole shadow in a general rotating spacetime obtained through newman- janis algorithm.Physical Review D, 100(2):024028, 2019
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Scalar absorption beyond geometric optics in Klein-Gordon-separable Johannsen black hole spacetimes
Derives partial-wave scalar absorption in Klein-Gordon separable Johannsen spacetimes and identifies finite-frequency spectra as a probe of radial propagation sectors beyond area law and null capture.