18 citations · 58 across the 8 of their papers we have counts for
6 papers · 1 filter
An excision scheme for black holes in constrained evolution formulations: spherically symmetric case
Isabel Cordero-Carrión, Nicolas Vasset, Jérôme Novak +1
Excision techniques are used in order to deal with black holes in numerical simulations of Einstein equations and consist in removing a topological sphere containing the physical s…
Application of initial data sequences to the study of Black Hole dynamical trapping horizons
José Luis Jaramillo, Marcus Ansorg, Nicolas Vasset
Non-continuous "jumps" of Apparent Horizons occur generically in 3+1 (binary) black hole evolutions. The dynamical trapping horizon framework suggests a spacetime picture in which…
Isolated horizons in numerical relativity: constructing the excised Kerr spacetime in Dirac gauge
Nicolas Vasset, Jérôme Novak, José Luis Jaramillo
Using a constrained formalism for Einstein equations in Dirac gauge, we propose to compute excised quasistationary initial data for black hole spacetimes in full general relativity…
A spectral method for the wave equation of divergence-free vectors and symmetric tensors inside a sphere
Jerome Novak, Jean-Louis Cornou, Nicolas Vasset
The wave equation for vectors and symmetric tensors in spherical coordinates is studied under the divergence-free constraint. We describe a numerical method, based on the spectral…
Excised black hole spacetimes: quasi-local horizon formalism applied to the Kerr example
Nicolas Vasset, Jérôme Novak, José Luis Jaramillo
We present a numerical work aiming at the computation of excised initial data for black hole spacetimes in full general relativity, using Dirac gauge in the context of a constraine…
A numerical study of Penrose-like inequalities in a family of axially symmetric initial data
J. L. Jaramillo, N. Vasset, M. Ansorg
Our current picture of black hole gravitational collapse relies on two assumptions: i) the resulting singularity is hidden behind an event horizon -- weak cosmic censorship conject…