Spinning black hole in the puncture method: Numerical experiments

2nd International Conference on Mathematical Modeling in Physical Sciences 2013

物理学;数学

Dietrich, Tim^1 ; Brügmann, Bernd^1

Friedrich-Schiller-Universität Jena, 07743 Jena, Germany^1

关键词: Binary neutron stars;    Black holes;    Black-hole spacetimes;    Long term simulation;    Method: numerical;    Numerical relativity;    Schwarzschild;    Strong field;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012155/pdf
DOI  :  10.1088/1742-6596/490/1/012155

来源: IOP

【 摘 要 】

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.