Basic HTML version of Foils prepared Jan 31 99

Foil 7 1: What Are Black Holes?

From Overview of BBH Simulations Physics Colloquium -- Oct 29 1998. by Scott Klasky
A black hole is a region of spacetime from which it is not possible to communicate with "infinity".
Black holes are a possible endpoint of stellar evolution.
Black holes are predictions of Einstein's theory. They are vacuum solutions to the Einstein field equations.
Black holes contain curvature singularities contained within causal boundaries.
  • Cause computational problems in modeling them.
  • Can excise the interior of black holes to model them.

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