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

Simple item page
dc.creatorKojima, Yasufumi
dc.creatorSaijo, Motoyuki
dc.date2008-11-17
dc.date.accessioned2026-07-07T12:13:17Z
dc.date.available2026-07-07T12:13:17Z
dc.descriptionNonlinear 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.
dc.description10 pages with 5 figures, revtex4.cls. Accepted for publication in the Physical Review D
dc.identifierhttps://arxiv.org/abs/0811.2645
dc.identifierhttp://arxiv.org/abs/0811.2645
dc.identifierPhys.Rev.D78:124001,2008
dc.identifierdoi:10.1103/PhysRevD.78.124001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210798
dc.subjectAstrophysics
dc.titleAmplification of azimuthal modes with odd wave numbers during dynamical bar-mode growth in rotating stars
dc.typetext

Files

Collections

arXiv