Preprint

The SpECTRE Cauchy-characteristic evolution system for rapid, precise waveform extraction

Jordan MoxonInstituto de Física TeóricaMark ScheelTheoretical Astrophysics , Walter Burke Institute for Theoretical Physics , California Institute of Technology , Pasadena , CA 91125 , USASaul A. TeukolskyTheoretical Astrophysics , Walter Burke Institute for Theoretical Physics , California Institute of Technology , Pasadena , CA 91125 , USANils DeppeInstituto de Física TeóricaFischer, NilsMax Planck Institute for Gravitational Physics (Albert Einstein Institute) , Am Mühlenberg 1 , D-14476 Potsdam , GermanyFrançois HébertTheoretical Astrophysics , Walter Burke Institute for Theoretical Physics , California Institute of Technology , Pasadena , CA 91125 , USAKidder, Lawrence E.Cornell Center for Astrophysics and Planetary Science , Cornell University , Ithaca , New York 14853 , USAWilliam ThroweCornell Center for Astrophysics and Planetary Science , Cornell University , Ithaca , New York 14853 , USA

2021en

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ABI

Annotatsiya

We give full details regarding the new Cauchy-characteristic evolution (CCE) system in SpECTRE. The implementation is built to provide streamlined flexibility for either extracting waveforms during the process of a SpECTRE binary compact object simulation, or as a standalone module for extracting waveforms from worldtube data provided by another code base. Using our recently presented improved analytic formulation, the CCE system is free of pure-gauge logarithms that would spoil the spectral convergence of the scheme. It gracefully extracts all five Weyl scalars, in addition to the news and the strain. The SpECTRE CCE system makes significant improvements on previous implementations in modularity, ease of use, and speed of computation.

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DOI: 10.48550/arxiv.2110.08635

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