Figure 7
From: Subharmonic instability of a self-organized granular jet
Order of the subharmonic response of the oscillation of the jet's horizontal position for a system driven at frequency f and amplitude A.
The subharmonic order, n ≡ Ts/T, appears color coded from yellow to red. Blue data points indicate parameters we were not able to distinguish a peak above the noise level in the Fourier-spectrum of the center of mass position. That is, the V-shape was clearly present, as was the jet, however it did not show regular lateral osciallation.
