Alfven-Rossby Waves in Rotating Magnetized Stars

Using Hamiltonian methodology, we clarified a common misunderstanding of the origin of kinematic drifts. We studied the weakly nonlinear interactions between linear Alfven-Rossby waves. We used a spherical harmonic representation in which the fully nonlinear MHD equations are replaced by an equivalent system of first order ODEs. We computed the coupling coefficients analytically. Through numerical calculations, we found that even a weak magnetic field can greatly enhance the couplings between modes. We also found and explained the existence of very long-period quasi-periodic oscillations.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Chen, Yun

Contributors dc:contributor

• Lamb, Frederick K.

• Physics, Astronomy and Astrophysics

Language dc:language

eng

Identifier

(MiAaPQ)AAI3202073

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/80525