6 papers
Properties of black holes in non-linear electrodynamics
Lewis Croney, Ruth Gregory, Ansh Gupta +1
We investigate the properties of charged black hole geometries in nonlinear electrodynamics. We focus on the recently reported analytic charged black hole solutions to illustrate t…
Black-hole spectroscopy from a giant quantum vortex
Pietro Smaniotto, Leonardo Solidoro, Patrik Å vanÄara +5
Black-hole spectroscopy aims to infer the fundamental properties of black holes by analysing the spectrum of gravitational waves emitted as they settle into equilibrium. These reso…
When is a sloshing vortex an analogue black hole bomb?
Sam Patrick, Leonardo Solidoro, MaurÃcio Richartz +4
Draining vortices provide a powerful platform for simulating black hole phenomena in tabletop experiments. In realistic fluid systems confined within a finite container, low-freque…
Thermodynamics of dyonic black holes in non-linear electrodynamics
Lewis Croney, Ruth Gregory, Carlos J. RamÃrez-Valdez
We investigate dyonic black holes in a weak field expansion of non-linear electrodynamics. The breadth of parameter space permits a rich thermodynamic structure, additional turning…
On the origin of quasinormal modes in semi-open systems
Leonardo Solidoro, Sam Patrick, Ruth Gregory +1
Astrophysical black holes are open systems which, when perturbed, radiate quasi-normal modes (QNMs) to infinity. By contrast, laboratory analogues are necessarily finite-sized, pre…
Ultra slow-roll with a black hole
Lewis Croney, Ruth Gregory, Sam Patrick
We investigate ultra slow-roll inflation with a seed black hole in a de Sitter background. By numerically tracking transitions from slow-roll to ultra slow-roll inflation, we find…