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ID: 2717.2, MPI für Gravitationsphysik / Astrophysical Relativity
Black Hole Excision for Dynamic Black Holes
Authors:Alcubierre, Miguel; Brügmann, Bernd; Pollney, Denis; Seidel, Edward
Language:English
Date of Publication (YYYY-MM-DD):2001
Title of Journal:Physical Review D
Volume:64
Start Page:061501
Review Status:not specified
Audience:Not Specified
Abstract / Description:We extend previous work on 3D black hole excision to the case of distorted black holes, with a variety of dynamic gauge conditions that are able to respond naturally to the spacetime dynamics. We show that the combination of excision and gauge conditions we use is able to drive highly distorted, rotating black holes to an almost static state at late times, with well behaved metric functions, without the need for any special initial conditions or analytically prescribed gauge functions. Further, we show for the first time that one can extract accurate waveforms from these simulations, with the full machinery of excision and dynamic gauge conditions. The evolutions can be carried out for long times, far exceeding the longevity and accuracy of even better resolved 2D codes. While traditional 2D codes show errors in quantities such as apparent horizon mass of over 100% by t = 100M, and crash by t = 150M, with our new techniques the same systems can be evolved for hundreds of M's in full 3D with errors of only a few percent.
Document Type:Article
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
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