Foundations of multiple black hole evolutions

@article{Lousto2008FoundationsOM,
  title={Foundations of multiple black hole evolutions},
  author={Carlos O. Lousto and Yosef Zlochower},
  journal={Physical Review D},
  year={2008},
  volume={77},
  pages={024034}
}
We present techniques for long-term, stable, and accurate evolutions of multiple-black-hole spacetimes using the 'moving puncture' approach with fourth- and eighth-order finite-difference stencils. We use these techniques to explore configurations of three black holes in a hierarchical system consisting of a third black hole approaching a quasicircular black-hole binary, and find that, depending on the size of the binary, the resulting encounter may lead to a prompt merger of all three black… 
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