0: Background: Binary Black Hole Grand Challenge

• Alliance of 8 universities with the charter to predict gravitational radiation waveforms from binary black hole mergers.

Problem broken up into components.

• Interior evolution (strong field region).

  • Development and construction of a Cauchy code .
  • Implementing black hole excision.

• Outer boundary matching to characteristic exterior code.

  • Extracts waveforms.
  • Provides outer boundary conditions for Cauchy code.

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