174 citations · 605 across the 20 of their papers we have counts for
20 papers
Absorption and scattering spectra of massive scalar waves in charged regular black hole spacetimes
Marco A. A. Paula, Carolina L. Benone, Luís 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…
Ergoregion instability in a fluid with vorticity
Leandro A. Oliveira, Carolina L. Benone, Luís 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…
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…
Scattering by stringy black holes
Sérgio V. M. C. B. Xavier, Carolina L. Benone, Luiz C. S. Leite +1
We study the scattering of axially incident massless scalar waves by a charged and rotating black hole solution from heterotic string theory called the Kerr-Sen black hole. We comp…
Scalar scattering by black holes and wormholes
Haroldo C. D. Lima Junior, Carolina L. Benone, Luís C. B. Crispino
We study the scattering of monochromatic planar scalar waves in a geometry that interpolates between the Schwarzschild solution, regular black holes and traversable wormhole spacet…
Absorption by stringy black holes
Sérgio Vinicius M. C. B. Xavier, Carolina L. Benone, Luís C. B. Crispino
We investigate the absorption of planar massless scalar waves by a charged rotating stringy black hole, namely a Kerr--Sen black hole. We compute numerically the absorption cross s…
4D Einstein-Gauss-Bonnet gravity: Massless particles and absorption of planar spin-0 waves
Haroldo C. D. Lima Junior, Carolina L. Benone, Luís C. B. Crispino
We investigate the absorption cross section of planar scalar massless waves impinging on spherically symmetric black holes which are solutions of the novel 4D Einstein-Gauss-Bonnet…
Analytical investigation of wave absorption by a rotating black hole analogue
Leandro A. Oliveira, Carolina L. Benone, Amanda L. Almeida +1
Perturbations in a draining vortex can be described analytically in terms of confluent Heun functions. In the context of analogue models of gravity in ideal fluids, we investigate…
Scalar absorption: Black holes versus wormholes
Haroldo C. D. Lima Junior, Carolina L. Benone, Luís C. B. Crispino
We study the absorption of massless scalar waves in a geometry that interpolates between the Schwarzschild solution and a wormhole that belongs to the Morris-Thorne class of soluti…
Black holes with synchronised Proca hair: linear clouds and fundamental non-linear solutions
Nuno M. Santos, Carolina L. Benone, Luís C. B. Crispino +2
Recent studies have made key progress on the black hole/solitonic solutions of the Einstein-Proca system. Firstly, fully non-linear dynamical evolutions of the Kerr black hole supe…
On-axis scattering of scalar fields by charged rotating black holes
Luiz C. S. Leite, Carolina L. Benone, Luís C. B. Crispino
We investigate the scattering of a massless scalar field by a Kerr-Newman black hole, considering the case of on-axis incidence. We use the partial wave method to find numerical re…
Massive and charged scalar field in Kerr-Newman spacetime: Absorption and superradiance
Carolina L. Benone, Luís C. B. Crispino
We consider the propagation of a generic scalar field around a rotating and charged black hole. Using the partial wave method, we find, numerically, the total and partial absorptio…
Synchronized stationary clouds in a static fluid
Carolina L. Benone, Luís C. B. Crispino, Carlos A. R. Herdeiro +1
The existence of stationary bound states for the hydrodynamic velocity field between two concentric cylinders is established. We argue that rotational motion, together with a trapp…
On-Axis scalar absorption cross section of Kerr-Newman black holes: Geodesic analysis, sinc and low-frequency approximations
Carolina L. Benone, Luiz C. S. Leite, LuÍs C. B. Crispino +1
We investigate null geodesics impinging parallel to the rotation axis of a Kerr-Newman black hole, and show that the absorption cross section for a massless scalar field in the eik…
Scalar absorption by charged rotating black holes
Luiz C. S. Leite, Carolina L. Benone, Luís C. B. Crispino
We compute numerically the absorption cross section of planar massless scalar waves impinging upon a Kerr-Newman black hole with different incidence angles. We investigate the infl…
Addendum to "Absorption of a massive scalar field by a charged black hole"
Carolina L. Benone, Ednilton S. de Oliveira, Sam R. Dolan +1
In Phys.Rev.D89, 104053 (2014) we studied the absorption cross section of a scalar field of mass impinging on a static black hole of mass and charge . We presented numer…
Superradiance in static black hole spacetimes
Carolina L. Benone, Luís C. B. Crispino
We investigate the absorption of a massive and charged scalar field in a Reissner-Nordström background. We compare our numerical results for the absorption cross section, obtained…
Acoustic clouds: standing sound waves around a black hole analogue
Carolina L. Benone, Luis C. B. Crispino, Carlos Herdeiro +1
Under certain conditions sound waves in fluids experience an acoustic horizon with analogue properties to those of a black hole event horizon. In particular, a draining bathtub-lik…
Kerr-Newman scalar clouds
Carolina L. Benone, Luis C. B. Crispino, Carlos Herdeiro +1
Massive complex scalar fields can form bound states around Kerr black holes. These bound states -- dubbed scalar clouds -- are generically non-zero and finite on and outside the ho…
Absorption of a massive scalar field by a charged black hole
Carolina L. Benone, Ednilton S. de Oliveira, Sam R. Dolan +1
We calculate the absorption cross section of a massive neutral scalar field impinging upon a Reissner-Nordström black hole. First, we derive key approximations in the high- and low…