142 citations · 898 across the 29 of their papers we have counts for
21 papers · 1 filter
Quasinormal modes on Kerr spacetimes
Dejan Gajic, Claude M. Warnick
We introduce a rigorous framework for defining quasinormal modes on stationary, asymptotically flat spacetimes as isolated eigenvalues of the infinitesimal generator of time transl…
Quasinormal modes of Reissner-Nordström-AdS: the approach to extremality
Filip Ficek, Claude Warnick
We consider the quasinormal spectrum of scalar and axial perturbations of the Reissner-Nordström-AdS black hole as the horizon approaches extremality. By considering a foliation of…
Quasinormal modes in extremal Reissner-Nordström spacetimes
Dejan Gajic, Claude Warnick
We present a new framework for characterizing quasinormal modes (QNMs) or resonant states for the wave equation on asymptotically flat spacetimes, applied to the setting of extrema…
Stability of the Toroidal AdS Schwarzschild Solution in the Einstein--Klein-Gordon System
Jake Dunn, Claude Warnick
We consider the stability of the toroidal AdS-Schwarzshild black holes as solutions of the Einstein--Klein-Gordon system, with Dirichlet or Neumann boundary conditions for the scal…
Aspherical Photon and Anti-Photon Surfaces
G. W. Gibbons, C. M. Warnick
In this note we identify photon surfaces and anti-photon surfaces in some physically interesting spacetimes, which are not spherically symmetric. All of our examples solve physical…
The Klein-Gordon equation on the toric adS-Schwarzschild black hole
Jake Dunn, Claude Warnick
We consider the Klein-Gordon equation on the exterior of the toric anti de-Sitter Schwarzschild black hole with Dirichlet, Neumann and Robin boundary conditions at . W…