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Colliding black holes from a null point of view: the close limit
Sascha Husa, Manuela Campanelli, Roberto Gomez +2
We present a characteristic algorithm for computing the perturbations of a Schwarzschild spacetime by means of solving the Teukolsky equations. Our methods and results are expected…
Episodic Self-Similarity in Critical Gravitational Collapse
J. Thornburg, Ch. Lechner, M. Purrer +2
We report on a new behavior found in numerical simulations of spherically symmetric gravitational collapse in self-gravitating SU(2) sigma models at intermediate gravitational coup…
The close limit from a null point of view: the advanced solution
Manuela Campanelli, Roberto Gomez, Sascha Husa +2
We present a characteristic algorithm for computing the perturbation of a Schwarzschild spacetime by means of solving the Teukolsky equation. We implement the algorithm as a charac…
Complete null data for a black hole collision
Roberto Gomez, Sascha Husa, Jeffrey Winicour
We present an algorithm for calculating the complete data on an event horizon which constitute the necessary input for characteristic evolution of the exterior spacetime. We apply…
SU(2) Cosmological Solitons
Christiane Lechner, Sascha Husa, Peter C. Aichelburg
We present a class of numerical solutions to the SU(2) nonlinear -model coupled to the Einstein equations with cosmological constant in spherical symmetry. These solut…
Type II Critical Collapse of a Self-Gravitating Nonlinear -Model
Sascha Husa, Christiane Lechner, Michael Pürrer +2
We report on the existence and phenomenology of type II critical collapse within the one-parameter family of SU(2) -models coupled to gravity. Numerical investigations in spheri…