256 citations · 479 across the 18 of their papers we have counts for
14 papers · 1 filter
Analogue black hole lightring and its resonances in an optical fiber
R. Terrier, J. Fatome, B. Kibler +1
We demonstrate the complete observation of a black-hole lightring resonance in an optical analogue. To do so, we generalize the concept of the photon sphere to non-stationnary syst…
Dynamical system approach to the spectral (in)stability of black holes under localised potential perturbations
T. Torres, S. R. Dolan
The aim of this work is to improve understanding of the resonant spectra of black holes under perturbations arising from e.g. compact objects or accretion disks in their vicinity.…
A primer on the analogue black hole bomb with capillary-gravity waves
Sam Patrick, Theo Torres
Draining vortices with a free surface are frequently employed as rotating black hole simulators, both in theory and experiments. However, most theoretical work is restricted to the…
From black hole spectral instability to stable observables
Theo Torres
The quasi-normal mode (QNM) spectrum of black holes is unstable under small perturbation of the potential and has observational consequences in time signals. Such signals might be…
Black hole information recovery from gravitational waves
Louis Hamaide, Theo Torres
We study the classical and quantum black hole information in gravitational waves from a black hole's history. We review the necessary concepts regarding quantum information in many…
Imperfect draining vortex as analogue extreme compact object
Theo Torres, Sam Patrick, Ruth Gregory
Motivated by recent experimental progress, we study scalar wave propagation over an imperfect draining vortex, which can serve as an analogue for rotating and non-rotating extreme…
Hydrodynamic simulations of rotating black holes
Theo Torres
Wave scattering phenomena are ubiquitous in almost all Sciences, from Biology to Physics. Interestingly, it has been shown many times that different physical systems are the stage…
Electromagnetic self-force on a charged particle on Kerr spacetime: equatorial circular orbits
T. Torres, S. R. Dolan
We calculate the self-force acting on a charged particle on a circular geodesic orbit in the equatorial plane of a rotating black hole. We show by direct calculation that the dissi…
Estimate of the superradiance spectrum in dispersive media
Theo Torres
In 2016, the Nottingham group detected the rotational superradiance effect. While this experiment demonstrated the robustness of the superradiance process, it still lacks a complet…
Analogue Black Hole Spectroscopy; or, how to listen to dumb holes
Theo Torres, Sam Patrick, Maurício Richartz +1
Spectroscopy is a fundamental tool in science which consists in studying the response of a system as a function of frequency. Among its many applications in Physics, Biology, Chemi…
Quasinormal mode oscillations in an analogue black hole experiment
Theo Torres, Sam Patrick, Maurício Richartz +1
The late stages of the relaxation process of a black hole are expected to depend only on its mass and angular momentum and not on the details of its formation process. Inspired by…
Mimicking inflation with 2-fluid systems in a strong gradient magnetic field
Zack Fifer, Theo Torres, Sebastian Erne +3
In the standard cosmological picture the Universe underwent a brief period of near-exponential expansion, known as Inflation. This provides an explanation for structure formation t…
Waves on a vortex: rays, rings and resonances
Theo Torres, Antonin Coutant, Sam Dolan +1
We study the scattering of surface water waves with irrotational draining vortices. At small depth, this system is a mathematical analogue of a rotating black hole and can be used…
Observation of superradiance in a vortex flow
Theo Torres, Sam Patrick, Antonin Coutant +3
Wave scattering phenomena are ubiquitous to almost all Sciences, from Biology to Physics. When an incident wave scatters off of an obstacle, it is partially reflected and partially…