43 citations · 314 across the 25 of their papers we have counts for
5 papers · 1 filter
Accurate Black Hole Quasinormal Modes, Regge Poles, and Greybody Factors from Light Ring Ladder Symmetry
Rajes Ghosh, David Pereñiguez, Jaime Redondo-Yuste +1
The characteristic oscillations of a black hole can be understood in terms of null rays trapped near its unstable light ring, with this correspondence becoming exact in the high-fr…
Black Hole Ringdown Nonlinearities in the Large-D Limit
Roberto Emparan, Amanda Green-Salinas, David Pereñiguez +1
We initiate the study of nonlinear effects in the ringdown phase of black hole mergers using the effective theory of black hole dynamics in the large-D limit. This framework offers…
Unifying the Regge-Wheeler-Zerilli and Bardeen-Press-Teukolsky formalisms on spherical backgrounds
David Pereñiguez
We develop a formulation of perturbation theory on spherically symmetric backgrounds based on self-dual curvature equations combined with spherical harmonic expansions. The resulti…
Gravitational electric-magnetic duality at the light ring and quasinormal mode isospectrality in effective field theories
Ibrahima Bah, Emanuele Berti, Valerio De Luca +2
Black hole perturbations are characterized by a superposition of damped exponentials known as quasinormal modes. In general relativity, the spectra of parity-even and parity-odd qu…
Tidal perturbations of an extreme mass ratio inspiral around a Kerr black hole
Marta Cocco, Gianluca Grignani, Troels Harmark +3
We determine the metric of a Kerr black hole subject to external tidal fields using metric reconstruction techniques. Working within the Newman-Penrose formalism, we solve the Teuk…