Basic HTML version of Foils prepared Jan 31 99

Foil 21 5: Modeling Black Holes

From Overview of BBH Simulations Physics Colloquium -- Oct 29 1998. by Scott Klasky
1 Boundary conditions
  • Asymptotic flatness or that gij dij and Kij 0 at outer boundary. For model problem we use "Dirichlet conditions" or "blended boundary conditions" (later).
  • Inner boundary: excised interior of Apparent Horizon minus a number of buffer zones (will clarify). There is no boundary condition here; "Boundary without boundary conditions"
2 We believe that for 1 hole we understand how to model the inner boundary "Boosted 3-dimensional Black-Hole Evolutions with Singularity Excision", w/ G.B. Cook et al., Phys. Rev Lett, Vol 80, Number 12 (1998).
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