6 papers
A powerful local shear instability in stratified disks
D. Richard, F. Hersant, O. Dauchot +3
In this paper, we show that astrophysical accretion disks are dynamically unstable to non-axisymmetric disturbances. This instability is present in any stably stratified anticyclon…
Shear turbulence beneath the solar tachocline
E. Schatzman, J. -P. Zahn, P. Morel
Helioseismic inversions of the Sun's internal angular velocity profile show that the rotation changes from differential in latitude in the convection zone to almost uniform in the…
Turbulence in differentially rotating flows What can be learned from the Couette-Taylor experiment
Denis Richard, Jean-Paul Zahn
The turbulent transport of angular momentum plays an important role in many astrophysical objects, but its modelization is still far from satisfactory. We discuss here what can be…
Angular momentum transport by internal waves in the solar interior
Jean-Paul Zahn, Suzanne Talon, Jose Matias
The internal gravity waves of low frequency which are emitted at the base of the solar convection zone are able to extract angular momentum from the radiative interior. We evaluate…
Rotational mixing in early-type stars: the main-sequence evolution of a 9 Mo star
Suzanne Talon, Jean-Paul Zahn, Andre Maeder +1
We describe the main-sequence evolution of a rotating 9 star. Its interior rotation profile is determined by the redistribution of angular momentum through the meridian c…
Anisotropic diffusion and shear instabilities
S. Talon, J. -P. Zahn
We examine the role of anisotropic turbulence on the shear instabilities in a stratified flow. Such turbulence is expected to occur in the radiative interiors of stars, due to thei…