6 papers
Challenging the Weak Cosmic Censorship with Phantom Fields
Giovanni Caridi, Fabrizio Corelli, Paolo Pani
Penrose's weak cosmic censorship conjecture asserts that spacetime singularities produced by gravitational collapse are generically hidden behind event horizons, thus preventing th…
Black Hole Ringdown Amplitudescopy
Francesco Crescimbeni, Xisco Jimenez-Forteza, Paolo Pani
Black hole ringdowns in extensions of General Relativity (GR) generically exhibit two distinct signatures: (1) theory-dependent shifts in the standard black-hole quasinormal modes,…
Black hole spectroscopy and nonlinear echoes in Einstein-Maxwell-scalar theory
Marco Melis, Fabrizio Corelli, Robin Croft +1
In the context of Einstein-Maxwell-scalar theory with a nonminimal coupling between the electromagnetic and scalar field, we study linear (non)radial perturbations and nonlinear ra…
Gravitational quasinormal modes of black holes in quadratic gravity
Georgios Antoniou, Leonardo Gualtieri, Paolo Pani
We study the gravitational perturbations of black holes in quadratic gravity, in which the Einstein-Hilbert term is supplemented by quadratic terms in the curvature tensor. In this…
Beyond The Standard Model electrodynamics in the time domain
Fabrizio Corelli, Enrico Cannizzaro, Andrea Caputo +1
Many motivated extensions of the standard model include new light bosons, such as axions and dark photons, which can mix with the ordinary photon. This latter, when in a dilute pla…
Spectroscopy of magnetized black holes and topological stars
Alexandru Dima, Marco Melis, Paolo Pani
We study the linear response of four dimensional magnetized black holes and regular topological stars arising from dimensional compactification of Einstein-Maxwell theory in five d…