412 citations · 3.1k across the 30 of their papers we have counts for
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Regular Black Hole Metric with Three Constants of Motion
Tim Johannsen
According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric spacetimes…
Inner Accretion Disk Edges in a Kerr-Like Spacetime
Tim Johannsen
According to the no-hair theorem, astrophysical black holes are uniquely described by the Kerr metric. In order to test this theorem with observations in either the electromagnetic…
Systematic Study of Event Horizons and Pathologies of Parametrically Deformed Kerr Spacetimes
Tim Johannsen
In general relativity, all black holes in vacuum are described by the Kerr metric, which has only two independent parameters: the mass and the spin. The unique dependence on these…
A Metric for Testing the Nature of Black Holes
Tim Johannsen
In general relativity, astrophysical black holes are uniquely described by the Kerr metric. Observational tests of the Kerr nature of these compact objects and, hence, of general r…
A Metric for Rapidly Spinning Black Holes Suitable for Strong-Field Tests of the No-Hair Theorem
Tim Johannsen, Dimitrios Psaltis
According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric deviations…