Caustic Animations of Circumbinary Systems

Welcome!

This page contains animations for the caustics of circumbinary systems. Each animation has four panels. The first panel in the top left, gives an overview of the all of the caustics except two: for each set of caustics, there are two caustics due to the stellar binary at x~0 (when φb~0) that are located symmetrically around the x-axis at several Einstein radii, which cannot be viewed in the first panel without making the other caustics impossible to see. The window of the first panel is constant, and does not change. The second panel (top right) shows the central caustic region, usually of the stellar binary. In the φb animations, the window stays fixed. However, in the sb animations, the window zooms in and out to keep the central caustic from the stellar binary a fixed size; occasionally it will shift positions. The third panel (bottom left) focuses on the planetary caustics. In the cases where there are two planetary caustics, this panel focuses on only one of them, since the other moves in a similar way. For the φb animations, this window stays in a fixed position. For the sb animations, the window stays a fixed size but moves to keep the ABb planetary caustic in the center of the window. This is done to highlight changes in the size of the caustics. The final panel focuses on the lower of the two far triangular caustics from the stellar binary that are not shown in the first panel. In both sb and φb animations, the window stays a fixed size, but moves so that the caustic remains in the center of the window. In each panel, it is important to take note of the axes and how they are changing; this is the easiest way to understand what each window is doing.

Below are two tables with links for the animations. The first table contains the φb animations. The second table conatins the sb animations.


φb Animations

sp

0.6 0.95 1.0 1.05 1.5
10-3 Link Link Link Link Link
qp 10-4 Link Link Link Link Link
10-5 Link Link Link Link Link

sb Animations

sp

0.6 0.95 1.0 1.05 1.5
10-3 Link Link Link Link Link
qp 10-4 Link Link Link Link Link
10-5 Link Link Link Link Link

The following two tables show the same animations but for qb = 0.3.


φb Animations

sp

0.6 0.95 1.0 1.05 1.5
10-3 Link Link Link Link Link
qp 10-4 Link Link Link Link Link
10-5 Link Link Link Link Link

sb Animations

sp

0.6 0.95 1.0 1.05 1.5
10-3 Link Link Link Link Link
qp 10-4 Link Link Link Link Link
10-5 Link Link Link Link Link

For any questions or comments, email luhn.5@osu.edu.