Non-extensive statistical analysis of magnetic field during the March 2012 ICME event using a multi-spacecraft approach

G.P. Pavlos, O.E. Malandraki, E.G. Pavlos, A.C. Iliopoulos and L.P. Karakatsanis

Physica A: Statistical Mechanics and its Applications, 2016, vol. 464, issue C, 149-181

Abstract: In this study we present some new and significant results concerning the dynamics of interplanetary coronal mass ejections (ICMEs) observed in the near Earth at L1 solar wind environment, as well as its effect in Earth’s magnetosphere. The results are referred to Tsallis non-extensive statistics and in particular to the estimation of Tsallis q-triplet, (qstat,qsen,qrel)of magnetic field time series of the ICME observed at the Earth resulting from the solar eruptive activity on March 7, 2012 at the Sun. For this, we used a multi-spacecraft approach based on data experiments from ACE, CLUSTER 4, THEMIS-E and THEMIS-C spacecraft. For the data analysis different time periods were considered, sorted as “quiet”, “shock” and “aftershock”, while different space domains such as the Interplanetary space (near Earth at L1 and upstream of the Earth’s bowshock), the Earth’s magnetosheath and magnetotail, were also taken into account. Our results reveal significant differences in statistical and dynamical features, indicating important variations of the magnetic field dynamics both in time and space domains during the shock event, in terms of rate of entropy production, relaxation dynamics and non-equilibrium meta-stable stationary states.

Keywords: Solar wind; CME event; Tsallis entropy; Non-Gaussian dynamics (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:464:y:2016:i:c:p:149-181

DOI: 10.1016/j.physa.2016.07.058

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