Dynamical One-Armed Spiral Instability in Differentially Rotating Stars

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dc.creatorSaijo, Motoyuki
dc.creatorYoshida, Shin'ichirou
dc.date2005-03-31
dc.date.accessioned2026-07-07T02:17:21Z
dc.date.available2026-07-07T02:17:21Z
dc.descriptionWe investigate the dynamical one-armed spiral instability in differentially rotating stars with both eigenmode analysis and hydrodynamic simulations in Newtonian gravity. We find that the one-armed spiral mode is generated around the corotation radius of the star, and the distribution of angular momentum shifts inwards the corotation radius during the growth of one-armed spiral mode. We also find by investigating the distribution of the canonical angular momentum density that the low T/|W| dynamical instability for both m=1 and m=2 mode, where T is the rotational kinetic energy and W is the gravitational potential energy, is generated around the corotation point. Finally, we discuss the feature of gravitational waves generated from these modes.
dc.description6 pages with 6 eps figures, revsymb.sty. To appear in Proceedings of the 22nd Texas Symposium on Relativistic Astrophysics, Stanford, 2004, edited by P. Chen (SLAC Electronic Conference Proceedings)
dc.identifierhttps://arxiv.org/abs/astro-ph/0504002
dc.identifierhttp://arxiv.org/abs/astro-ph/0504002
dc.identifiereConf C041213:1419,2005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9140
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleDynamical One-Armed Spiral Instability in Differentially Rotating Stars
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