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  Interpolation in waveform space: enhancing the accuracy of gravitational waveform families using numerical relativity

Cannon, K., Emberson, J. D., Hanna, C., Keppel, D., & Pfeiffer, H. (2013). Interpolation in waveform space: enhancing the accuracy of gravitational waveform families using numerical relativity. Physical Review D, 87: 044008. doi:10.1103/PhysRevD.87.044008.

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1211.7095 (Preprint), 2MB
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 Urheber:
Cannon, Kipp, Autor
Emberson, J. D., Autor
Hanna, Chad, Autor
Keppel, Drew1, Autor           
Pfeiffer, Harald, Autor
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Schlagwörter: General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: Matched-filtering for the identification of compact object mergers in gravitational-wave antenna data involves the comparison of the data stream to a bank of template gravitational waveforms. Typically the template bank is constructed from phenomenological waveform models since these can be evaluated for an arbitrary choice of physical parameters. Recently it has been proposed that singular value decomposition (SVD) can be used to reduce the number of templates required for detection. As we show here, another benefit of SVD is its removal of biases from the phenomenological templates along with a corresponding improvement in their ability to represent waveform signals obtained from numerical relativity (NR) simulations. Using these ideas, we present a method that calibrates a reduced SVD basis of phenomenological waveforms against NR waveforms in order to construct a new waveform approximant with improved accuracy and faithfulness compared to the original phenomenological model. The new waveform family is given numerically through the interpolation of the projection coefficients of NR waveforms expanded onto the reduced basis and provides a generalized scheme for enhancing phenomenological models.

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 Datum: 2012-11-292013
 Publikationsstatus: Erschienen
 Seiten: 10 pages, 7 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 1211.7095
DOI: 10.1103/PhysRevD.87.044008
 Art des Abschluß: -

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Titel: Physical Review D
  Andere : Phys. Rev. D.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Seiten: - Band / Heft: 87 Artikelnummer: 044008 Start- / Endseite: - Identifikator: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258