Spinning black hole in the puncture method: Numerical experiments
arXiv:1403.5746 · doi:10.1088/1742-6596/490/1/012155
Abstract
The strong-field region inside a black hole needs special attention during numerical simulation. One approach for handling the problem is the moving puncture method, which has become an important tool in numerical relativity since it allows long term simulations of binary black holes. An essential component of this method is the choice of the '1+log'-slicing condition. We present an investigation of this slicing condition in rotating black hole spacetimes. We discuss how the results of the stationary Schwarzschild '1+log'-trumpet change when spin is added. This modification enables a simple and cheap algorithm for determining the spin of a non-moving black hole for this particular slicing condition. Applicability of the algorithm is verified in simulations of single black hole, binary neutron star and mixed binary simulations.
conference
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- Full 3D Numerical Relativity Simulations of Neutron Star -- Boson Star Collisions with BAM
- Trumpet Slices in Kerr Spacetimes
- Increasing the Accuracy of Binary Neutron Star Simulations with an improved Vacuum Treatment
- Black-Hole Neutron Star Simulations with the BAM code: First Tests and Simulations