Evidence for chaotic dynamics in the Jovian magnetosphere

In this paper, for the first time we examine the hypothesis of chaotic behaviour for the dynamics of the inner of Jupiterʹs magnetosphere as which is appeared in energetic populations. For this, we study geometrical and dynamical characteristics of Jovian energetic ion time series in the reconstructed phase space by using the SVD extended chaotic analysis. The null hypothesis that is applied for the SVD reconstructed signals reveals a strong stochastic and high-dimensional external component, as well as an internal low-dimensional, nonlinear and chaotic deterministic component. The results of this work indicate the existence of a low-dimensional strange attractor underlying the Jovian magnetospheric dynamics which produces the observed quasi-periodic phenomena.