Scalar functions for wave extraction in numerical relativity

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dc.creatorNerozzi, Andrea
dc.date2007-01-31
dc.date2007-05-30
dc.date.accessioned2026-07-07T10:22:05Z
dc.date.available2026-07-07T10:22:05Z
dc.descriptionWave extraction plays a fundamental role in the binary black hole simulations currently performed in numerical relativity. Having a well defined procedure for wave extraction, which matches simplicity with efficiency, is critical especially when comparing waveforms from different simulations. Recently, progress has been made in defining a general technique which uses Weyl scalars to extract the gravitational wave signal, through the introduction of the {\it quasi-Kinnersley tetrad}. This procedure has been used successfully in current numerical simulations; however, it involves complicated calculations. The work in this paper simplifies the procedure by showing that the choice of the {\it quasi-Kinnersley tetrad} is reduced to the choice of the time-like vector used to create it. The space-like vectors needed to complete the tetrad are then easily identified, and it is possible to write the expression for the Weyl scalars in the right tetrad, as simple functions of the electric and magnetic parts of the Weyl tensor.
dc.description5 pages
dc.identifierhttps://arxiv.org/abs/gr-qc/0702001
dc.identifierhttp://arxiv.org/abs/gr-qc/0702001
dc.identifierPhys.Rev.D75:104002,2007
dc.identifierdoi:10.1103/PhysRevD.75.104002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175393
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleScalar functions for wave extraction in numerical relativity
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