401 citations · 529 across the 14 of their papers we have counts for
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gr-qc2019★ 26 cited
Scalar Fields and Parametrized Spherically Symmetric Black Holes: Can one hear the shape of space-time?
Sebastian H. Völkel, Kostas D. Kokkotas
In this work we study whether parametrized spherically symmetric black hole solutions in metric theories of gravity can appear to be isospectral when studying perturbations. From a…
gr-qc2019★ 20 cited
The Inverse Problem for Hawking Radiation
Sebastian H. Völkel, Roman Konoplya, Kostas D. Kokkotas
In this work we study the inverse problem related to the emission of Hawking radiation. We first show how the knowledge of greybody factors of different angular contributions c…