36 citations · 97 across the 8 of their papers we have counts for
10 papers
Spectral instabilities in the time domain
Taillte May, Adrien Kuntz, Nicola Franchini +2
We investigate the effect of a spectral instability on the time domain waveform using a one-dimensional double Pöschl-Teller model. By analytically following successive scatterings…
Second-order scattering response of a Schwarzschild black hole
Bruno Bucciotti, Jaime Redondo-Yuste, Adrien Kuntz +2
Gravitational waves couple in a nonlinear fashion in the vicinity of a black hole. Black hole perturbation theory can be readily applied to compute the magnitude of this coupling,…
Vanishing of all redshift modes in Schwarzschild ringdown
Adrien Kuntz, Matteo Della Rocca
Several studies of black hole ringdown from particles plunging into black holes have identified contributions decaying at integer multiples of the surface gravity, called redshift…
Dynamical quasinormal mode excitation II: propagation and convergence in Schwarzschild
Marina De Amicis, Enrico Cannizzaro, Gregorio Carullo +2
We study the dynamical excitation of quasinormal modes (QNMs) during the plunge of a particle into a Schwarzschild black hole, building on the framework of Phys. Rev. D 113 (2026)…
Green function of the Pöschl-Teller potential
Adrien Kuntz
We use an approximation of the Regge-Wheeler-Zerilli potential, known as Pöschl-Teller, to exactly compute the time-domain Green function of black hole perturbations in this simpli…
Black hole spectroscopy: from theory to experiment
Emanuele Berti, Vitor Cardoso, Gregorio Carullo +65
The "ringdown" radiation emitted by oscillating black holes has great scientific potential. By carefully predicting the frequencies and amplitudes of black hole quasinormal modes a…
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…
Amplitudes and Polarizations of Quadratic Quasi-Normal Modes for a Schwarzschild Black Hole
Bruno Bucciotti, Leonardo Juliano, Adrien Kuntz +1
General Relativity predicts the existence of quadratic quasi-normal modes at second order in perturbation theory. Building on our recent work, we compute the amplitudes and polariz…
Quadratic Quasi-Normal Modes of a Schwarzschild Black Hole
Bruno Bucciotti, Leonardo Juliano, Adrien Kuntz +1
Quadratic quasi-normal modes, generated at second order in black hole perturbation theory, are a promising target for testing gravity in the nonlinear regime with next-generation g…
Nonlinear Quasi-Normal Modes: Uniform Approximation
Bruno Bucciotti, Adrien Kuntz, Francesco Serra +1
Recent works have suggested that nonlinear (quadratic) effects in black hole perturbation theory may be important for describing a black hole ringdown. We show that the technique o…