575 citations · 7k across the 182 of their papers we have counts for
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Constraining scalarization in scalar-Gauss-Bonnet gravity through binary pulsars
Victor I. Danchev, Daniela D. Doneva, Stoytcho S. Yazadjiev
In the present paper we derive strong constrains on scalarization in scalar-Gauss-Bonnet (sGB) gravity using observations of pulsars in close binary systems. Since scalarized neutr…
Axial perturbations of hairy Gauss-Bonnet black holes with massive self-interacting scalar field
Kalin V. Staykov, Jose Luis Blázquez-Salcedo, Daniela D. Doneva +3
We study the axial quasinormal modes of hairy black holes in Gauss-Bonnet gravity with massive self-interacting scalar field. Two coupling functions of the scalar field to the Gaus…
Classification of static asymptotically flat spacetimes with a photon sphere in Einstein-multiple-scalar field theory
Stoytcho Yazadjiev
In the present paper we consider the Einstein-multiple-scalar field theory. When the target space of the scalar fields is a complete, simply connected Riemannian manifold with non-…
Polish Doughnuts around Scalarized Kerr Black Holes
Matheus C. Teodoro, Lucas G. Collodel, Daniela Doneva +3
In this work we aim to investigate non-mainstream thick tori configurations around Kerr Black Holes with Scalar Hair (KBHsSH). For that goal, we provide a first approach using cons…
Equatorial extreme-mass-ratio inspirals in Kerr black holes with scalar hair spacetimes
Lucas G. Collodel, Daniela D. Doneva, Stoytcho S. Yazadjiev
In this work we analyze some judiciously chosen solutions of Kerr Black Holes with Scalar Hair (KBHsSH) of special interest for Gravitational Wave (GW) events originated from Extre…
Quasi-periodic Oscillations in Rotating Ellis Wormhole Spacetimes
Efthimia Deligianni, Burkhard Kleihaus, Jutta Kunz +2
We analyze the properties of the circular orbits for massive particles in the equatorial plane of symmetric rotating Ellis wormholes. In particular, we obtain the orbital frequenci…