39 citations · 49 across the 4 of their papers we have counts for
4 papers
Wave optical imaging by point-source scattering for a TNdS black hole
Felix Willenborg
In our work, we present a calculation based on an exact, non-approximated wave equation, as described by the Teukolsky equation, for a Taub-NUT-de Sitter spacetime. We observe the…
The scalar angular Teukolsky equation and its solution for the Taub-NUT spacetime
Felix Willenborg, Dennis Philipp, Claus Lämmerzahl
The Taub-NUT spacetime offers many curious insights into the solutions of Einstein's electrovacuum equation. In the Bonnor interpretation, this spacetime possesses so-called Misner…
Exact wave-optical imaging of a Kerr-de Sitter black hole using Heun's equation
Felix Willenborg, Dennis Philipp, Claus Lämmerzahl
Spacetime perturbations due to scalar, vector, and tensor fields on a fixed background geometry can be described in the framework of Teukolsky's equation. In this work, wave scatte…
Geodesic motion around traversable wormholes supported by a massless conformally-coupled scalar field
Felix Willenborg, Saskia Grunau, Burkhard Kleihaus +1
We consider a traversable wormhole solution of Einstein's gravity conformally coupled to a massless scalar field, a solution derived by Barcelo and Visser based on the JNWW spaceti…