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ID: 207117.0, MPI für Gravitationsphysik / Astrophysical Relativity
Gravitational wave extraction based on Cauchy-characteristic extraction and characteristic evolution
Authors:Babiuc, Maria C.; Szilagyi, Bela; Hawke, Ian; Zlochower, Yosef
Date of Publication (YYYY-MM-DD):2005-12-07
Title of Journal:Classical and Quantum Gravity
Volume:22
Issue / Number:23
Start Page:5089
End Page:5107
Review Status:not specified
Audience:Not Specified
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
Identifiers:URL:http://www.iop.org/EJ/abstract/0264-9381/22/23/011...
ISSN:0264-9381
DOI:10.1088/0264-9381/22/23/011
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