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Dynamical behavior of black-hole spacetimes
Kyriakos Destounis
The theory of General Relativity predicts that black holes are a natural constituent of our Universe. Before a black hole binary relaxes to a final state, it undergoes damped oscil…
Superradiant instability of charged scalar fields in higher-dimensional Reissner-Nordström-de Sitter black holes
Kyriakos Destounis
Black holes possess trapping regions which lead to intriguing dynamical effects. By properly scattering test fields off a black hole, one can extract energy from it, leading to the…
Strong Cosmic Censorship in Horndeski Theory
Kyriakos Destounis, Rodrigo D. B. Fontana, Filipe C. Mena +1
The strong cosmic censorship hypothesis has recently regained a lot of attention in charged and rotating black holes immersed in de Sitter space. Although the picture seems to be c…
Strong Cosmic Censorship in higher-dimensional Reissner-Nordström-de Sitter spacetime
Hang Liu, Ziyu Tang, Kyriakos Destounis +3
It was recently shown that Strong Cosmic Censorship might be violated for near-extremally-charged black holes in 4-dimensional de Sitter space under scalar perturbations. Here, we…