The oscillation and stability of differentially rotating spherical shells: the 
normal-mode problem

Watts, A. L.; Andersson, N.; Beyer, H.; Schutz, B. F.

doi:10.1046/j.1365-8711.2003.06612.x

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The oscillation and stability of differentially rotating spherical shells: the normal-mode problem

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Beyer, H.
MPI for Gravitational Physics, Max Planck Society;

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Schutz, B. F.
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Watts, A. L., Andersson, N., Beyer, H., & Schutz, B. F. (2003). The oscillation and stability of differentially rotating spherical shells: the normal-mode problem. Monthly Notices of the Royal Astronomical Society, 342(4), 1156-1168. doi:10.1046/j.1365-8711.2003.06612.x.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-10AC-C

Abstract

An understanding of the dynamics of differentially rotating systems is key to many areas of astrophysics. We investigate the oscillations of a simple system exhibiting differential rotation, and discuss issues concerning the role of corotation points and the emergence of dynamical instabilities. This problem is of particular relevance to the emission of gravitational waves from oscillating neutron stars, which are expected to possess significant differential rotation immediately after birth or binary merger.