Accurate black hole evolutions by fourth-order numerical relativity

Details Accurate black hole evolutions by fourth-order numerical relativity Accurate black hole evolutions by fourth-order numerical relativity

2005-05-12

arxiv.org/abs/gr-qc/0505055v2

Phys.Rev. D72 (2005) 024021

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, 25 figures

Scientific paper

10.1103/PhysRevD.72.024021

We present techniques for successfully performing numerical relativity simulations of binary black holes with fourth-order accuracy. Our simulations are based on a new coding framework which currently supports higher order finite differencing for the BSSN formulation of Einstein's equations, but which is designed to be readily applicable to a broad class of formulations. We apply our techniques to a standard set of numerical relativity test problems, demonstrating the fourth-order accuracy of the solutions. Finally we apply our approach to binary black hole head-on collisions, calculating the waveforms of gravitational radiation generated and demonstrating significant improvements in waveform accuracy over second-order methods with typically achievable numerical resolution.

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