18 citations · 58 across the 8 of their papers we have counts for
8 papers
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…
A Mathematical Description of the IDSA for Supernova Neutrino transport, its discretization and a comparison with a finite volume scheme for Boltzmann's Equation
Heiko Berninger, Emmanuel Frenod, Martin Gander +3
In this paper we give an introduction to the Boltzmann equation for neutrino transport used in core collapse supernova models as well as a detailed mathematical description of the…
Solving the transport equation by the use of 6D spectral methods in spherical geometry
Silvano Bonazzola, Nicolas Vasset, Bruno Peres
We present a numerical method for handling the resolution of a general transport equation for radiative particles, aimed at physical problems with a general spherical geometry. Hav…
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…