Numerical relativity multimodal waveforms using absorbing boundary conditions

Autor(en)

Luisa T. Buchman, Matthew D. Duez, Marlo Morales, Mark A. Scheel, Tim M. Kostersitz, Andrew M. Evans, Keefe Mitman

Abstrakt

Errors due to imperfect boundary conditions in numerical relativity simulations of binary black holes (BBHs) can produce unphysical reflections of gravitational waves which compromise the accuracy of waveform predictions, especially for subdominant modes. A system of higher order absorbing boundary conditions which greatly reduces this problem was introduced in earlier work (Buchman and Sarbach 2006 Class. Quantum Grav. 23 6709). In this paper, we devise two new implementations of this boundary condition system in the Spectral Einstein Code (SpEC), and test them in both linear multipolar gravitational wave and inspiralling mass ratio 7:1 BBH simulations. One of our implementations in particular is shown to be extremely robust and to produce accuracy superior to the standard freezing-Ψ0 boundary condition usually used by SpEC.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Washington State University, California Institute of Technology (Caltech), University of California, Irvine

Journal

Classical and Quantum Gravity

Band

41

Anzahl der Seiten

28

ISSN

0264-9381

DOI

https://doi.org/10.48550/arXiv.2402.12544

Publikationsdatum

09-2024

Peer-reviewed

Ja

ÖFOS 2012

103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/144aaa40-5bc8-4302-acdb-f5933508fb0d