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  Extending gravitational wave extraction using Weyl characteristic fields

Iozzo, D. A. B., Boyle, M., Deppe, N., Moxon, J., Scheel, M. A., Kidder, L. E., et al. (2021). Extending gravitational wave extraction using Weyl characteristic fields. Physical Review D, 103(2): 024039. doi:10.1103/PhysRevD.103.024039.

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Other : Improving Gravitational Wave Extraction Using Weyl Characteristic Fields

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 Creators:
Iozzo, Dante A. B., Author
Boyle, Michael, Author
Deppe, Nils, Author
Moxon, Jordan, Author
Scheel, Mark A., Author
Kidder, Lawrence E., Author
Pfeiffer, Harald P.1, Author           
Teukolsky, Saul A., Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: We present a detailed methodology for extracting the full set of
Newman-Penrose Weyl scalars from numerically generated spacetimes without
requiring a tetrad that is completely orthonormal or perfectly aligned to the
principal null directions. We also describe an extrapolation technique for
computing the Weyl scalars' contribution at asymptotic null infinity in
post-processing. These methods have continued to be used to produce $\Psi_4$
and $h$ waveforms for the Simulating eXtreme Spacetimes Waveform Catalog and
now have been expanded to produce the entire set of Weyl scalars. These new
waveform quantities are critical for the future of gravitational wave astronomy
in order to understand the finite-amplitude gauge differences that can occur in
numerical waveforms. We also present a new analysis of the accuracy of
waveforms produced by the Spectral Einstein Code. While ultimately we expect
Cauchy Characteristic Extraction to yield more accurate waveforms, the
extraction techniques described here are far easier to implement and have
already proven to be a viable way to produce production-level waveforms that
can meet the demands of current gravitational-wave detectors.

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 Dates: 2020-10-282021
 Publication Status: Issued
 Pages: 18 pages, 6 figures, 1 table, submitted to Physical Review D
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2010.15200
DOI: 10.1103/PhysRevD.103.024039
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 103 (2) Sequence Number: 024039 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258