Complex systems methods characterizing nonlinear processes in the near-earth electromagnetic environment: Recent advances and open challenges

G Balasis, MA Balikhin, SC Chapman… - Space Science …, 2023 - Springer
Learning from successful applications of methods originating in statistical mechanics,
complex systems science, or information theory in one scientific field (eg, atmospheric …

Nonlinear dynamics in space plasma turbulence: temporal stochastic chaos

ACL Chian, FA Borotto, T Hada, RA Miranda… - Reviews of Modern …, 2022 - Springer
Intermittent turbulence is key for understanding the stochastic nonlinear dynamics of space,
astrophysical, and laboratory plasmas. We review the theory of deterministic and stochastic …

Complexity-entropy causality plane as a complexity measure for two-dimensional patterns

HV Ribeiro, L Zunino, EK Lenzi, PA Santoro… - 2012 - journals.plos.org
Complexity measures are essential to understand complex systems and there are numerous
definitions to analyze one-dimensional data. However, extensions of these approaches to …

Untangling the solar wind and magnetospheric drivers of the radiation belt electrons

S Wing, JR Johnson, DL Turner… - Journal of …, 2022 - Wiley Online Library
Many solar wind parameters correlate with one another, which complicates the causal‐effect
studies of solar wind driving of the magnetosphere. Conditional mutual information (CMI) is …

Applications of information theory in solar and space physics

S Wing, JR Johnson - Entropy, 2019 - mdpi.com
Characterizing and modeling processes at the sun and space plasma in our solar system
are difficult because the underlying physics is often complex, nonlinear, and not well …

Information-theoretic Analysis of Longitude Distribution of Photospheric Magnetic Fields from MDI/HMI Synoptic Maps: Evidence for Rossby Waves

B Raphaldini, M Dikpati… - The Astrophysical …, 2023 - iopscience.iop.org
Much of the research on the magnetic activity of the Sun has been focused on its
axisymmetric component. However, the longitudinal complexity plays a fundamental role in …

Prediction of sunspot and plage coverage for solar cycle 25

V Penza, F Berrilli, L Bertello… - The Astrophysical …, 2021 - iopscience.iop.org
Solar variability occurs over a broad range of spatial and temporal scales, from the Sun's
brightening over its lifetime to the fluctuations commonly associated with magnetic activity …

Order out of randomness: Self-organization processes in astrophysics

MJ Aschwanden, F Scholkmann, W Béthune… - Space Science …, 2018 - Springer
Self-organization is a property of dissipative nonlinear processes that are governed by a
global driving force and a local positive feedback mechanism, which creates regular …

The solar memory from hours to decades

MJ Aschwanden, JR Johnson - The Astrophysical Journal, 2021 - iopscience.iop.org
Waiting-time distributions allow us to distinguish at least three different types of dynamical
systems, including (i) linear random processes (with no memory);(ii) nonlinear, avalanche …

Comparison of chaotic and fractal properties of polar faculae with sunspot activity

LH Deng, B Li, YY Xiang, GT Dun - The Astronomical Journal, 2015 - iopscience.iop.org
The solar magnetic activity is governed by a complex dynamo mechanism and exhibits a
nonlinear dissipation behavior in nature. The chaotic and fractal properties of solar time …