43 citations · 314 across the 25 of their papers we have counts for
19 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…
Gravitational Atoms from Topological Stars
Ibrahima Bah, Emanuele Berti, Bogdan Ganchev +2
We study the bound states of a massive scalar field around a topological star, and show that these are strictly normal modes. This yields a genuine gravitational atom, sharply dist…
Perturbations of Plane Waves and Quadratic Quasinormal Modes on the Lightring
Kwinten Fransen, David Pereñiguez, Jaime Redondo-Yuste
We study second order gravitational perturbations on plane wave spacetimes from both the metric and curvature perturbation points of view. For the former, we explicitly use the iso…
On the non-zero Love numbers of magnetic black holes
David Pereñiguez, Edgars Karnickis
Black holes are believed to possess vanishing Love numbers, which implies that they do not deform in the presence of external tides. This fact has been verified in a number of scen…
Ringdown nonlinearities in the eikonal regime
Bruno Bucciotti, Vitor Cardoso, Adrien Kuntz +2
The eikonal limit of black hole quasinormal modes (the large multipole limit ) can be realized geometrically as a next-to-leading order solution to the geometric optics…
Charged Binaries in Gravitational Tides
Elisa Grilli, Marta Orselli, David Pereñiguez +1
Next-generation low-frequency interferometers are expected to detect binary systems near supermassive black holes, where tidal effects can alter significantly the motion of the bin…
Decoupled Gravitational Wave Equations in Spherical Symmetry from Curvature Wave Equations
Gowtham Rishi Mukkamala, David Pereñiguez
Black hole perturbation theory on spherically symmetric backgrounds has been instrumental in establishing various aspects about the gravitational dynamics close to black holes, and…
Hushing black holes: tails in dynamical spacetimes
Vitor Cardoso, Gregorio Carullo, Marina De Amicis +6
Stationary, asymptotically flat, black hole solutions of the vacuum field equations of General Relativity belong to the Kerr family. But how does one approach this state, dynamical…
Superradiant Instability of Magnetic Black Holes
David Pereñiguez, Marina de Amicis, Richard Brito +1
Black hole superradiance has proven being very valuable in several realms of gravitational physics, and holds a promising discovery potential. In this paper, we consider the superr…
Ringdown of a dynamical spacetime
Jaime Redondo-Yuste, David Pereñiguez, Vitor Cardoso
The gravitational waves emitted (some time) after two black holes merge are well described by the theory of linear perturbations on a spacetime characterized by the mass and spin o…
Magnetic Black Holes: from Thomson Dipoles to the Penrose Process and Cosmic Censorship
Conor Dyson, David Pereñiguez
We consider accretion of charged test matter by rotating, magnetic black holes and discuss a number of aspects in which the interaction of the angular momentum contained in the ele…
Constraints on massive gravity from dipolar mode excitations
Vitor Cardoso, Francisco Duque, Andrea Maselli +1
We study extreme-mass-ratio systems in theories admitting the Schwarzschild solution and propagating a massive graviton. We show that, in addition to small corrections to the quadr…
Black Hole Perturbations and Electric-Magnetic Duality
David Pereñiguez
Black holes can be electromagnetically charged, or carry vector charge from new fundamental fields. Their response to small fluctuations is of paramount importance to study gravita…
Love numbers and magnetic susceptibility of charged black holes
David Pereñiguez, Vitor Cardoso
The response of black holes to companions is of fundamental importance in the context of their dynamics and of gravitational-wave emission. Here, we explore the effect of charge on…
Black Holes in Higher Dimensional General Relativity
David Pereñiguez
This work is originally a Cambridge Part III essay. Throughout the paper, some aspects of General Relativity in higher dimensions are reviewed. The work presented draws a path with…