3 papers
gr-qc2026
Absorption and scattering spectra of massive scalar waves in charged regular black hole spacetimes
Marco A. A. Paula, Carolina L. Benone, LuÃs C. B. Crispino
Regular black holes (RBHs) can be seen as possible alternatives to standard black holes (BHs), since these geometries do not have a curvature singularity. As a way of improving our…
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…
gr-qc2024
Radial stability of spherical bosonic stars and critical points
Nuno M. Santos, Carolina L. Benone, Carlos A. R. Herdeiro
We study radial perturbations of spherically symmetric spin- and spin- bosonic stars, computing numerically the squared frequency of the fundamental mode. We find that not al…