Figure 3

Comparison between discontinuous spirals obtained (a) experimentally and (b) numerically.
(a) Experimental stability diagram displaying 1300 × 2048 individual measurements. (b) Lyapunov stability diagram showing 2400 × 2400 exponents. The arrow points to the focal hub (red dot), located at
. The dotted line represents a fit passing through the widest periodicity islands near the hub. The turning points inside the white boxes are shown magnified in Fig. [4]. The slight differences in scales are explained in the text.