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.
Dynamics of null particles and shadow for general rotating black hole.Journal of High Energy Physics, 2023 (11):141, 2023
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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.