Improved numerical stability of stationary black hole evolution calculations

Details Improved numerical stability of stationary black hole evolution calculations Improved numerical stability of stationary black hole evolution calculations

2002-09-19

arxiv.org/abs/gr-qc/0209066v2

Phys.Rev. D66 (2002) 084026

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 11 figures, 1 typo in Eq. (20) corrected

Scientific paper

10.1103/PhysRevD.66.084026

We experiment with modifications of the BSSN form of the Einstein field equations (a reformulation of the ADM equations) and demonstrate how these modifications affect the stability of numerical black hole evolution calculations. We use excision to evolve both non-rotating and rotating Kerr-Schild black holes in octant and equatorial symmetry, and without any symmetry assumptions, and obtain accurate and stable simulations for specific angular momenta J/M of up to about 0.9M.

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