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gr-qc2026
Regular black holes with Minkowskian cores: energy-condition obstruction and optical screening
Francisco Tello-Ortiz, Y. Gómez-Leyton, Alejandro Rueda +2
We construct an asymptotically flat black-hole geometry with a Minkowskian core using gravitational decoupling and analyze its static and rotating extensions. Rather than imposing…
gr-qc2025
Multi-photon ring structure of reflection-asymmetric traversable thin-shell wormholes
Caio F. B. Macedo, João Luís Rosa, Diego Rubiera-Garcia +1
We consider the observational signatures of thin accretion disks around a reflection-asymmetric traversable thin-shell wormhole. This wormhole, built in the framework of Palatini $…
gr-qc2025
Shadows from thin accretion disks of parametrized black hole solutions
Gonzalo J. Olmo, João Luís Rosa, Diego Rubiera-Garcia +2
We discuss the optical appearance from thin accretion disks in parametrized black holes, namely, solutions characterized by an arbitrarily large number of parameters without any re…