Symmetry breaking in nonlinear growth of bar instability

Motoyuki Saijo*, Y. Kojima

*この研究の対応する著者

研究成果: Chapter

抄録

We investigate the nonlinear behaviour of the dynamically unstable rotating star for the bar mode by three dimensional hydrodynamics in Newtonian gravity. We find that an oscillation along the rotation axis is induced throughout the growth of the unstable bar mode, and that its characteristic frequency is twice as that of the bar mode, which oscillates mainly along the equatorial plane. The numerical results also indicate that the vertical oscillation amplifies another waves with odd azimuthal wave-numbers in the horizontal plane like Faraday resonance. A possibility to observe Faraday resonance in gravitational waves is demonstrated and discussed.

本文言語English
ホスト出版物のタイトルEAS Publications Series
ページ299-302
ページ数4
30
DOI
出版ステータスPublished - 2008
外部発表はい

出版物シリーズ

名前EAS Publications Series
30
ISSN(印刷版)16334760
ISSN(電子版)16381963

ASJC Scopus subject areas

  • 工学(全般)

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