5:Modeling Black Holes
Eventually outer boundary will be matched to an exterior evolution code that evolves the geometry along outgoing characteristics
- Code will extract radiation waveforms
- Evolve data out to “future null infinity”
- Null code exists and can evolve black hole spacetimes “forever” or 60,000M. However stabily matching the two codes is a problem and once that is resolved we can utilize that module as an outer boundary condition on our Cauchy evolution.