2 papers
gr-qc2025
Black hole spectral instabilities in the laboratory: Shallow water analogue
Mateus Malato Corrêa, Caio F. B. Macedo, Rodrigo Panosso Macedo +1
Small deviations in the spacetime around black holes can lead to instabilities in the underlying quasinormal mode spectrum, potentially altering the hierarchy of its overtones. A p…
gr-qc2025
Ergoregion instability in a fluid with vorticity
Leandro A. Oliveira, Carolina L. Benone, LuÃs C. B. Crispino
We investigate perturbations in a rotational and incompressible fluid flow. Interested in the phenomenon analogous to the black hole ergoregion instability, we verify the influence…