619 citations · 1.7k across the 16 of their papers we have counts for
14 papers · 1 filter
Black holes in anti-de Sitter: quasinormal modes, tails and tales of flat spacetime
Vitor Cardoso, Gaurav Khanna
Black holes in asymptotically anti-de Sitter (AdS) spacetimes have been the subject of intense scrutiny, including detailed frequency-domain analysis and full nonlinear evolutions.…
On the nonlinear instability of confined geometries
Hirotada Okawa, Vitor Cardoso, Paolo Pani
The discovery of a "weakly-turbulent" instability of anti-de Sitter spacetime supports the idea that confined fluctuations eventually collapse to black holes and suggests that simi…
Ultra-high-energy debris from the collisional Penrose process
Emanuele Berti, Richard Brito, Vitor Cardoso
Soon after the discovery of the Kerr metric, Penrose realized that superradiance can be exploited to extract energy from black holes. The original idea (involving the breakup of a…
Testing the nonlinear stability of Kerr-Newman black holes
Miguel Zilhão, Vitor Cardoso, Carlos Herdeiro +2
The nonlinear stability of Kerr-Newman black holes (KNBHs) is investigated by performing numerical simulations within the full Einstein-Maxwell theory. We take as initial data a KN…
Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
Vitor Cardoso, Luis C. B. Crispino, Caio F. B. Macedo +2
Ultracompact objects are self-gravitating systems with a light ring. It was recently suggested that fluctuations in the background of these objects are extremely long-lived and mig…
Higher dimensional Numerical Relativity: code comparison
Helvi Witek, Hirotada Okawa, Vitor Cardoso +5
The nonlinear behavior of higher dimensional black hole spacetimes is of interest in several contexts, ranging from an understanding of cosmic censorship to black hole production i…