High-order matrix method with delimited expansion domain (2023)
- Authors:
- Autor USP: QIAN, WEILIANG - EEL
- Unidade: EEL
- DOI: 10.1088/1361-6382/acc50f
- Subjects: BURACOS NEGROS; COSMOLOGIA
- Keywords: black hole; quasinormal mode; matrix method
- Agências de fomento:
- Language: Inglês
- Abstract: Motivated by the substantial instability of the fundamental and high-overtone quasinormal modes (QNMs), recent developments regarding the notion of black hole pseudospectrum call for numerical results with unprecedented precision. This work generalizes and improves the matrix method for black hole QNMs to higher orders, specifically aiming at a class of perturbations to the metric featured by discontinuity intimately associated with the QNM structural instability. The approach is based on the mock-Chebyshev grid, which guarantees its convergence in the degree of the interpolant. In practice, solving for black hole QNMs is a formidable task. The presence of discontinuity poses a further difficulty so that many well-known approaches cannot be employed straightforwardly. Compared with other viable methods, the modified matrix method is competent in speed and accuracy. Therefore, the method serves as a helpful gadget for relevant studies.
- Imprenta:
- Publisher: IOP Science
- Publisher place: Bristol
- Date published: 2023
- Source:
- Título: Classical and quantum gravity
- ISSN: 0264-9381
- Volume/Número/Paginação/Ano: v.40, n.8, art.085019, p. 1-24, 2023
- Este periódico é de acesso aberto
- Este artigo NÃO é de acesso aberto
-
ABNT
LIN, Kai e QIAN, Wei-Liang. High-order matrix method with delimited expansion domain. Classical and quantum gravity, v. 40, n. 8, p. 1-24, 2023Tradução . . Disponível em: https://doi.org/10.1088/1361-6382/acc50f. Acesso em: 23 jan. 2026. -
APA
Lin, K., & Qian, W. -L. (2023). High-order matrix method with delimited expansion domain. Classical and quantum gravity, 40( 8), 1-24. doi:10.1088/1361-6382/acc50f -
NLM
Lin K, Qian W-L. High-order matrix method with delimited expansion domain [Internet]. Classical and quantum gravity. 2023 ;40( 8): 1-24.[citado 2026 jan. 23 ] Available from: https://doi.org/10.1088/1361-6382/acc50f -
Vancouver
Lin K, Qian W-L. High-order matrix method with delimited expansion domain [Internet]. Classical and quantum gravity. 2023 ;40( 8): 1-24.[citado 2026 jan. 23 ] Available from: https://doi.org/10.1088/1361-6382/acc50f - Echoes of axial gravitational perturbations in stars of uniform density*
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Informações sobre o DOI: 10.1088/1361-6382/acc50f (Fonte: oaDOI API)
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