Space-Time Folding of the Wake Produced by a Supervelocity Rotating Point Source

Top: Surfaces composed of past wavefronts emitted by a source moving along a circular path at two different Mach numbers. Bottom: Projections along the time direction of the cones immediately above. Thick black arcs show source trajectories. The dashed line marks the position of an observer, with colored lines marking wavefronts that intersect at this position.