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  Challenging the paradigm of singularity excision in gravitational collapse

Baiotti, L., & Rezzolla, L. (2006). Challenging the paradigm of singularity excision in gravitational collapse. Physical Review Letters, 97(14): 141101. Retrieved from http://link.aps.org/abstract/PRL/v97/e141101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4CF8-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4CF9-E
Genre: Journal Article

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0608113prl.pdf (Publisher version), 215KB
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0608113v2.pdf (Preprint), 134KB
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 Creators:
Baiotti, Luca1, Author
Rezzolla, Luciano1, Author              
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1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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 Abstract: A paradigm deeply rooted in modern numerical relativity calculations prescribes the removal of those regions of the computational domain where a physical singularity may develop. We here challenge this paradigm by performing three-dimensional simulations of the collapse of uniformly rotating stars to black holes without excision. We show that this choice, combined with suitable gauge conditions and the use of minute numerical dissipation, improves dramatically the long-term stability of the evolutions. In turn, this allows for the calculation of the waveforms well beyond what previously possible, providing information on the black-hole ringing and setting a new mark on the present knowledge of the gravitational-wave emission from the stellar collapse to a rotating black hole.

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 Dates: 2006-10-06
 Publication Status: Published in print
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 97 (14) Sequence Number: 141101 Start / End Page: - Identifier: -