r-mode Movies
Lindblom, Vallisneri, and Tohline

The following figure and its accompanying quicktime movie (click on the image to download its corresponding movie) displays results from the first extended run that we made using a rapidly rotating star. The initial model was a uniformly rotating, n = 1 polytrope with a ratio of rotational to gravitational potential energy, T/|W| = 0.100. The velocity field of the star was initially perturbed with the velocity eigenfunction of a pure r-mode; thereafter it was driven by radiation-reaction forces.

The information that is plotted in each figure (movie) is detailed below.

FAST ( T/|W| = 0.100 )
Updated 09 September 2000
Forced
1.682 MB

Each frame of the movie contains two plots. On the left-hand-side is a color contour plot of the azimuthally averaged angular velocity (omega_avg) throughout the (R,Z) meridional plane. More specifically, we have calculated the following quantity,

amplitude = log10[abs(omega_avg) + 10-7],

then selected a "rainbow" color scheme of the form,

black purple blue green yellow orange red
smallest amplitude largest amplitude

On the right-hand-side of each frame we have plotted amplitude versus radius in the equatorial plane of the star. Although this plot does not (yet) contain a vertical label, you can still get a pretty good idea of what is going on by realizing that the vertical scale goes from amplitude = -7 (bottom) to amplitude = +0.5 (top).

The integer at the top of each frame identifies the frame number. Frame 1000 corresponds to the initial model; thereafter, successive frames are separated by 1/600th of a rotation period.