Separation of space-time and matter in polar oscillations of compact stars
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AbstractThe dynamics of polar oscillations of compact stars are conventionally described by a set of coupled differential equations and the roles that space-time and matter play in such oscillations are consequently difficult to track. In this paper, we develop a scheme for polar oscillations in terms of one space-time and one matter variables. With our judicious choice of variables, the coupling between space-time and matter is weak, which enables the separation of these two parties. Two independent second-order ordinary differential equations are obtained, corresponding to the Cowling and inverse-Cowling approximations, and leading to accurate determination of p- and w-mode quasi-normal modes, respectively, in a unified framework.
All Author(s) ListZhang YJ, Zhu QQ, Wu J, Chan TK, Leung PT
Journal nameMonthly Notices of the Royal Astronomical Society
Year2014
Month3
Day1
Volume Number438
Issue Number4
PublisherOxford University Press (OUP): Policy P - Oxford Open Option A
Pages3222 - 3232
ISSN0035-8711
eISSN1365-2966
LanguagesEnglish-United Kingdom
Keywordsasteroseismology; equation of state; gravitation; gravitational waves; stars: neutron; stars: oscillations
Web of Science Subject CategoriesAstronomy & Astrophysics; ASTRONOMY & ASTROPHYSICS

Last updated on 2020-19-09 at 01:40