47 citations · 177 across the 6 of their papers we have counts for
10 papers
Relativistic and Newtonian core-shell models: analytical and numerical results
Werner M. Vieira, Patricio S. Letelier
We make a detailed analysis of Newtonian as well as relativistic core-shell models recently proposed to describe a black hole or neutron star surrounded by shells of matter, and in…
Chaos and Taub-NUT related spacetimes
P. S. Letelier, W. M. Vieira
The occurrence of chaos for test particles moving in a Taub-NUT spacetime with a dipolar halo perturbation is studied using Poincaré sections. We find that the NUT parameter (magne…
Chaos and Rotating Black Holes with Halos
P. S. Letelier, W. M. Vieira
The occurrence of chaos for test particles moving around a slowly rotating black hole with a dipolar halo is studied using Poincaré sections. We find a novel effect, particles with…
Chaos in Periodically Perturbed Monopole + Quadrupole Like Potentials
P. S. Letelier, W. M. Vieira
The motion of a particle that suffers the influence of simple inner (outer) periodic perturbations when it evolves around a center of attraction modeled by an inverse square law pl…
Chaos in black holes surrounded by gravitational waves
P. S. Letelier, W. M. Vieira
The occurrence of chaos for test particles moving around Schwarzschild black holes perturbed by a special class of gravitational waves is studied in the context of the Melnikov met…
On the integrability of halo dipoles in gravity
Werner M. Vieira, Patricio S. Letelier
We stress that halo dipole components are nontrivial in core-halo systems in both Newton's gravity and General Relativity. To this end, we extend a recent exact relativistic model…