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Tsallis statistics and magnetospheric self-organization
Authors:G.P. Pavlos  L.P. Karakatsanis  M.N. Xenakis  D. Sarafopoulos  E.G. Pavlos
Affiliation:1. Department of Electrical and Computer Engineering, Democritus University of Thrace, 67100 Xanthi, Greece;2. Department of Physics, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
Abstract:In this study we use Tsallis non-extensive statistics for a new understanding the magnetospheric dynamics and the magnetospheric self-organization during quiet and intensive superstorm periods. The qsensqsens, qstatqstat, and qrelqrel indices set known as the Tsallis qq-triplet was estimated during both quiet and strongly active periods, as well as the correlation dimensions and Lyapunov exponents spectrum for magnetospheric bulk plasma flows data. The results obtained by our analysis clearly indicate the magnetospheric phase transition process from a high-dimensional quiet SOC state to a low-dimensional global chaotic state when superstorm events are developed. During such a phase transition process the non-extensive statistical character of the magnetospheric plasma is strengthened as the values of the qq-triplet indices changes obtaining higher values than their values during the quiet periods.
Keywords:Tsallis non-extensive statistics   Non-equilibrium phase transition   Intermittent turbulence   Self-organized criticality   Low dimensional chaos   Magnetosphere   Superstorm
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