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arXiv · gr-qc/9406003

Finding Principal Null Direction for Numerical Relativists

Laurens Gunnarsen·Hisa-aki Shinkai·Kei-ichi Maeda
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Abstract

We present a new method for finding principal null directions (PNDs). Because our method assumes as input the intrinsic metric and extrinsic curvature of a spacelike hypersurface, it should be particularly useful to numerical relativists. We illustrate our method by finding the PNDs of the Kastor-Traschen spacetimes, which contain arbitrarily many $Q=M$ black holes in a de Sitter back-ground.

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Laurens Gunnarsen, Hisa-aki Shinkai, Kei-ichi Maeda. 1994-06-02. Finding Principal Null Direction for Numerical Relativists. https://doi.org/10.1088/0264-9381%2F12%2F1%2F011

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