94 citations · 950 across the 111 of their papers we have counts for
8 papers · 1 filter
Light trajectories and optical appearances in asymptotically Anti-de Sitter-Schwarzschild and black string space-times
G. Alencar, Arthur Lima, Diego Rubiera-Garcia +1
The Event Horizon Telescope (EHT) imaging of the central objects in the M87 and Milky Way galaxies provide compelling evidence that these objects are consistent with (Kerr) black h…
Topological Thermodynamics of Black Holes: Revisiting the methods of winding numbers calculation
A. A. M. Silva, G. Alencar, C. R. Muniz +2
In this paper, the equivalence between two methods for computing winding numbers is established: the approach of -mapping topological current and the residue method. The methods…
Non-stationary wormholes with the presence of scalar fields and modified gravity
G. Alencar, R. Dárlla, Shin'ichi Nojiri +2
Some novel regular spacetimes are considered that show a non-stationary wormhole structure. A Simpson-Visser-like procedure is applied to reconstruct these regular spacetimes, free…
Tidal Stretching and Compression in Black Bounce Backgrounds
T. M. Crispim, Marcos V. de S. Silva, G. Alencar +1
Black bounces are compact objects that combine the structures of regular black holes with those of wormholes. These spacetimes exhibit a rich causal structure and can differ fundam…
LQG inspired spacetimes as solutions of the Einstein equations
Marcos V. de S. Silva, Carlos F. S. Pereira, G. Alencar +1
Black bounces are compact objects with a wormhole structure hidden behind an event horizon. This type of metric can be obtained through general relativity by considering the presen…
Generalized black-bounces solutions in f(R) gravity and their field sources
Marcos V. de S. Silva, T. M. Crispim, G. Alencar +2
In this work, following our recent findings in [1], we extend our analysis to explore the generalization of spherically symmetric and static black-bounce solutions, known from Gene…
General spherically symmetric black bounces within non-linear electrodynamics
G. Alencar, Albert Duran-Cabacés, Diego Rubiera-Garcia +1
Over the last years, the search of new regular black bounce solutions has drawn a lot of attentional over the international community working in gravitation. Indeed, in the era of…
A New Cloud of Strings
G. Alencar, R. R. Landim, R. N. Costa Filho
In this work, we present a generalization of the cloud of strings model originally proposed by Letelier, by introducing a magnetic-like component, , in addition to the elec…