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gr-qc2026
Analyzing Quasi-normal modes spectrum in asymptotically de Sitter black bounces and their optical appearance
G. Alencar, Albert Duran-Cabacés, A. Lima +2
This work explores asymptotically de Sitter black-bounce spacetimes, obtained as a regular extension of the Schwarzschild-de Sitter geometry via the Simpson-Visser prescription. Th…
gr-qc2025
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…
gr-qc2023
Regularizing Rotating Black Strings: a new black bounce solution
A. Lima, G. Alencar, Diego Sáez-Chillon Gómez
The present paper is devoted to a new black bounce solution that regularize the well-known rotating black string in dimensions. To do so, the procedure pointed out by Simpson…