Detection of nonlinear dynamics in solar wind and a comet using phase-correlation measures

Nonlinear dynamics in the solar wind and cometary plasma over small time scales are identified using sensitive entropy measures of the weak wave organization in the magnetic field polarized components. All possible linear Gaussian stochastic models are rejected at a high confidence level in all cases. The association of the detected correlations with a forward CIR shock is demonstrated using a large set of very high-resolution Pioneer-10 field measurements.