3 papers
gr-qc2020
Dynamics of gravitational collapse in the axisymmetric Einstein-Vlasov system
Ellery Ames, Håkan Andréasson, Oliver Rinne
We numerically investigate the dynamics near black hole formation of solutions to the Einstein--Vlasov system in axisymmetry. Our results are obtained using a particle-in-cell and…
gr-qc2019
Contracting asymptotics of the linearized lapse-scalar field sub-system of the Einstein-scalar field equations
Ellery Ames, Florian Beyer, James Isenberg
We prove an asymptotic stability result for a linear coupled hyperbolic-elliptic system on a large class of singular background spacetimes in CMC gauge on the n-torus. At each spat…
gr-qc2018
Cosmic String and Black Hole Limits of Toroidal Vlasov Bodies in General Relativity
Ellery Ames, Håkan Andréasson, Anders Logg
We numerically investigate limits of a two-parameter family of stationary solutions to the Einstein-Vlasov system. The solutions are toroidal and have non-vanishing angular momentu…