Amplification of azimuthal modes with odd wave numbers during dynamical bar-mode growth in rotating stars

Yasufumi Kojima*, Motoyuki Saijo

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Nonlinear growth of the bar-mode deformation is studied for a differentially rotating star with supercritical rotational energy. In particular, the growth mechanism of some azimuthal modes with odd wave numbers is examined by comparing a simplified mathematical model with a realistic simulation. Mode coupling to even modes, i.e., the bar mode and higher harmonics, significantly enhances the amplitudes of odd modes, unless they are exactly zero initially. Therefore, other modes which are not axially symmetric cannot be neglected at late times in the growth of the unstable bar mode even when starting from an almost axially symmetric state.

本文言語English
論文番号124001
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
78
12
DOI
出版ステータスPublished - 2008 12 2
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

フィンガープリント

「Amplification of azimuthal modes with odd wave numbers during dynamical bar-mode growth in rotating stars」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル