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Shadow of a rotating traversable wormhole
We explore the shadow of a certain class of rotating traversable wormholes within classical general relativity. The images depend on the angular momentum of the wormhole and the inclination angle ofExpand
Image of the Janis-Newman-Winicour naked singularity with a thin accretion disk
We study the optical appearance and the apparent radiation flux of a geometrically thin and optically thick accretion disk around the static Janis-Newman-Winicour naked singularity. We confineExpand
Polar quasinormal modes of the scalarized Einstein-Gauss-Bonnet black holes
We study the polar quasinormal modes of spontaneously scalarized black holes in Einstein-Gauss-Bonnet theory. In previous works we showed that a set of nodeless solutions of the fundamental branch ofExpand
Axial perturbations of the scalarized Einstein-Gauss-Bonnet black holes
We study the axial perturbations of spontaneously scalarized black holes in Einstein-Gauss-Bonnet (EGB) theories. We consider the nodeless solutions of the fundamental branch of the model studied inExpand
Charged Gauss-Bonnet black holes with curvature induced scalarization in the extended scalar-tensor theories
Daniela D. Doneva,1, 2, ∗ Stella Kiorpelidi,3, † Petya G. Nedkova,4, ‡ Eleftherios Papantonopoulos,3, § and Stoytcho S. Yazadjiev1, 4, 5, ¶ 1Theoretical Astrophysics, Eberhard Karls University ofExpand
On the Thermodynamics of 5D Black Holes on ALF Gravitational Instantons
We investigate the thermodynamical properties of solutions to the 5D Einstein and Einstein-Maxwell-dilaton equations describing static black holes on ALF gravitational instantons. Some generalExpand
On the shadow of rotating traversable wormholes
We revisit the shadow of rotating traversable wormholes discussing the role of the wormhole throat in the shadow formation. For certain classes of wormholes the throat serves as a potential barrierExpand
Uniqueness theorem for static phantom wormholes in Einstein–Maxwell-dilaton theory
Abstract We prove a uniqueness theorem for completely regular traversable electrically charged wormhole solutions in the Einstein–Maxwell-dilaton gravity with a phantom scalar field and a possibleExpand
Polish Doughnuts around Scalarized Kerr Black Holes
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 constant specificExpand
Image of the thin accretion disk around compact objects in the Einstein-Gauss-Bonnet gravity
We study the optical appearance of a thin accretion disk around compact objects within the Einstein-Gauss-Bonnet gravity. Considering static spherically symmetric black holes and naked singularitiesExpand
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