176 citations · 3.9k across the 153 of their papers we have counts for
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Motion of particles around a magnetically charged Euler-Heisenberg black hole with scalar hair and the Event Horizon Telescope
Dionysios P. Theodosopoulos, Thanasis Karakasis, George Koutsoumbas +1
We study the motion of uncharged particles and photons in the background of a magnetically charged Euler-Heisenberg (EH) black hole (BH) with scalar hair. The spacetime can be asym…
Scalarization of the Reissner-Nordström black hole with higher derivative gauge field corrections
Stella Kiorpelidi, Thanasis Karakasis, George Koutsoumbas +1
We discuss spontaneous scalarization of the Reissner-Nordström black hole in the presence of higher derivative gauge field corrections that arise in the context of string, as well…
Massive Scalar Field Perturbations of Black Holes Surrounded by Dark Matter
Ramón Bécar, P. A. González, Eleftherios Papantonopoulos +1
We consider scalar field perturbations in the background of black holes immersed in perfect fluid dark matter (PFDM). We find, by using the sixth order Wentzel-Kramers-Brillouin (W…
Asymptotic Black Holes and Conformal Mass in AdS Quadratic Curvature Gravity
Olivera Miskovic, Rodrigo Olea, Eleftherios Papantonopoulos +1
We explore the consistent truncation of conserved charges in Quadratic Curvature Gravity (QCG) with anti-de Sitter asymptotics to the linear order in the Weyl tensor. The QCG actio…
Regular Compact Objects with Scalar Hair
Thanasis Karakasis, Nick E. Mavromatos, Eleftherios Papantonopoulos
We discuss exact regular compact object solutions in higher dimensional extensions of General Relativity sourced by a phantom scalar field in arbitrary spacetime dimensions ($D…
Black Holes with Scalar Hair in Three Dimensions
Thanasis Karakasis, George Koutsoumbas, Eleftherios Papantonopoulos
Three - dimensional static and spinning black hole solutions of the Einstein-Klein-Gordon system are obtained for a particular scalar field configuration. At large distances, and f…