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  Gravitational wave extraction based on Cauchy-characteristic extraction and characteristic evolution

Babiuc, M. C., Szilagyi, B., Hawke, I., & Zlochower, Y. (2005). Gravitational wave extraction based on Cauchy-characteristic extraction and characteristic evolution. Classical and Quantum Gravity, 22(23), 5089-5107. doi:10.1088/0264-9381/22/23/011.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4D9B-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4D9D-3
Genre: Journal Article

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5_23_011.pdf (Publisher version), 422KB
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 Creators:
Babiuc, Maria C.1, Author
Szilagyi, Bela2, Author              
Hawke, Ian2, Author
Zlochower, Yosef1, Author
Affiliations:
1External Organizations, escidoc:persistent22              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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 Abstract: We implement a code to find the gravitational news at future null infinity by using data from a Cauchy code as boundary data for a characteristic code. This technique of Cauchy-characteristic extraction (CCE) allows for the unambiguous extraction of gravitational waves from numerical simulations. We first test the technique on non-radiative spacetimes: Minkowski spacetime, perturbations of Minkowski spacetime and static black hole spacetimes in various gauges. We show the convergence and limitations of the algorithm and illustrate its success in cases where other wave extraction methods fail. We further apply our techniques to a standard radiative test case for wave extraction, a linearized Teukolsky wave, presenting our results in comparison to the Zerilli technique, and we argue for the advantages of our method of extraction.

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 Dates: 2005-12-07
 Publication Status: Published in print
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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 22 (23) Sequence Number: - Start / End Page: 5089 - 5107 Identifier: ISSN: 0264-9381