18 citations · 38 across the 7 of their papers we have counts for
7 papers
Distorted black holes: a characteristic view
H. P. de Oliveira
We investigate the interaction between a non-rotating black hole and incoming gravitational waves using the characteristic formulation of the Einstein field equations, framed as a…
Fixed mesh refinement in the characteristic formulation of General Relativity
W. Barreto, H. P. de Oliveira, B. Rodriguez-Mueller
We implement a spatially fixed mesh refinement under spherical symmetry for the characteristic formulation of General Relativity. The Courant-Friedrich-Levy (CFL) condition lets us…
A note about a new class of two-kinks
T. S. Mendonça, H. P. de Oliveira
We present a model of two-kinks resulting from an explicit composition of two standards kinks of the model based on the procedure of Ref. \cite{uchiyama}. The two-kinks have…
The Efficiency of Gravitational Bremsstrahlung Production in the Collision of Two Schwarzschild Black Holes
R. F. Aranha, H. P. de Oliveira, I. Damião Soares +1
We examine the efficiency of gravitational bremsstrahlung production in the process of head-on collision of two boosted Schwarzschild black holes. We constructed initial data for t…
Gravitational Wave Emission from a Bounded Source: the Nonlinear Regime
H. P. de Oliveira, I. Damião Soares
We study the dynamics of a bounded gravitational collapsing configuration emitting gravitational waves, where the exterior spacetime is described by Robinson-Trautman geometries. T…
Chaotic exit to inflation: the dynamics of pre-inflationary universes
H. P. de Oliveira, I. Damiao Soares, T. J. Stuchi
We show that anisotropic Bianchi type-IX models, with matter and cosmological constant have chaotic dynamics, connected to the presence of a saddle-center in phase space. The topol…