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Journal Article

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


Vu,  Nils
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Moxon, J., Scheel, M. A., Teukolsky, S. A., Deppe, N., Vu, N., Hébert, F., et al. (2023). The SpECTRE Cauchy-characteristic evolution system for rapid, precise waveform extraction. Physical Review D, 107(6): 064013. doi:10.1103/PhysRevD.107.064013.

Cite as: https://hdl.handle.net/21.11116/0000-000C-F2D0-7
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.