Spatial maps of the absolute torque exerted on IF1 by the rest of the disk. The times are similar to those shown in Fig. 3. The disk rotates counterclockwise. The red arrows point to IF1. Partsof the disk characterized by the positive and negative torque are marked with the “+” and “-” signs, respectively, and the black dashed line separates these parts. The color bar shows the torque values in log dyne cm. The red contour line highlights the disk regions where the torque exceeds 10³⁸ dyne cm.