Improved asymptotic expressions for the eigenvalues of Laplace’s tidal equations
Improved asymptotic expressions for the eigenvalues of Laplace’s tidal equations
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拉普拉斯潮汐方程特征值的改进渐近表达式
DOI:
10.1093/mnras/staa2159
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发表时间:
2020
影响因子:
4.8
通讯作者:
Townsend, R H
中科院分区:
文献类型:
--
作者:
Townsend, R H
Laplace’s tidal equations govern the angular dependence of oscillations in stars when uniform rotation is treated within the so-called traditional approximation. Using a perturbation expansion approach, I derive improved expressions for the eigenvalue associated with these equations, valid in the asymptotic limit of large spin parameterq. These expressions have a relative accuracy of orderq−3for gravito-inertial modes, andq−1for Rossby and Kelvin modes; the corresponding absolute accuracy is of orderq−1for all three mode types. I validate my analysis against numerical calculations, and demonstrate how it can be applied to derive formulae for the periods and eigenfunctions of Rossby modes.
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DOI:
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发表时间:
2019
期刊:
影响因子:
--
作者:
Aso Yusuke;Hirano Naomi;Aikawa Yuri;Machida Masahiro N.;Ohashi Nagayoshi;Saito Masao;Takakuwa Shigehisa;Yen Hsi-Wei;Williams Jonathan P.;Youhei MASADA
通讯作者:
Youhei MASADA
DOI:
10.1046/j.1365-8711.2003.06379.x
发表时间:
2003
影响因子:
4.8
作者:
R. Townsend
通讯作者:
R. Townsend
影响因子:
4.8
作者:
W. Szewczuk;J. Daszy'nska
通讯作者:
J. Daszy'nska
DOI:
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发表时间:
1992
期刊:
影响因子:
--
作者:
M. Homer
通讯作者:
M. Homer
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
L. Bildsten;G. Ushomirsky;C. Cutler
通讯作者:
C. Cutler