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66 papers · 1 filter
Can Light Cross a Singularity? Exact Solutions from Analogue Gravity
Juan Manuel Paez, Franco Fiorini, Santiago M. Hernández
Using a simple spacetime hosting a strong curvature naked singularity, we employ an analogue gravity model to study electromagnetic fields in this background. We find exact solutio…
Tides and energy conditions in Einstein-Gauss-Bonnet thin-shell wormholes
Ernesto F. Eiroa, Emilio Rubín de Celis, Claudio Simeone
In this article we study spherical thin-shell wormholes in five-dimensional Einstein-Gauss-Bonnet gravity. We show that configurations supported by non-exotic matter, that is matte…
Stability of spherical thin-shell wormholes in scalar-tensor theories
Ernesto F. Eiroa, Griselda Figueroa-Aguirre, Vasiliki Karanasou
In this article, we construct a family of spherically symmetric thin-shell wormholes within scalar-tensor theories of gravity. In the case of wormholes symmetric across the throat,…
Born-Infeld Electrogravity and Dyonic Black Holes
Guadalupe Ahumada Acuña, Cecilia Bejarano, Rafael Ferraro
Born-Infeld electrogravity is defined through a Lagrangian that couples gravity and electromagnetism within a single determinantal structure. The field equations are derived in Pal…
Shadows cast by a class of rotating black bounces with an anisotropic fluid
Ernesto F. Eiroa, Juan M. Paez
In this work, we introduce a family of rotating black bounces with an anisotropic fluid obtained by using a modified Newman-Janis algorithm. We analyze the main features of these s…
Shedding Light on Naked Singularities
Franco Fiorini, Santiago Hernandez, Juan Manuel Paez
Electromagnetic waves propagating in the background provided by a spacetime hosting a strong curvature, naked singularity, are fully studied. The analysis is performed not only in…