Testing excision techniques for dynamical 3D black hole evolutions

Details Testing excision techniques for dynamical 3D black hole evolutions Testing excision techniques for dynamical 3D black hole evolutions

2004-11-29

arxiv.org/abs/gr-qc/0411137v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

REVTeX4, 8 pages, 9 figures

Scientific paper

We perform both distorted black hole evolutions and binary black hole head on collisions and compare the results of using a full grid to results obtained by excising the black hole interiors. In both cases the evolutions are found to run essentially indefinitely, and produce the same, convergent waveforms. Further, since both the distorted black holes and the head-on collision of puncture initial data can be carried out without excision, they provide an excellent dynamical test-bed for excision codes. This provides a strong numerical demonstration of the validity of the excision idea, namely the event horizon can be made to "protect" the spacetime from the excision boundary and allow an accurate exterior evolution.

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