Structure and Dynamics for Graphs of Interplanetary Magnetic Field Vectorsстатья
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Дата последнего поиска статьи во внешних источниках: 22 мая 2024 г.
Аннотация:Abstract—The paper applies the methods of information theory to the study of the interplanetary magneticfield and its variations as a result of solar activity. The statistical regularities of the projections of the vectorsof the interplanetary magnetic field and the speed of the flow of solar wind particles do not carry informationabout the order of realization for the available states of the studied physical system. At the same time, suchcharacteristics can be obtained from phase diagrams or phase portraits created on the basis of experimentalsamples in subspaces of the phase space, which display both the values of vector quantities and the sequenceorder in a particular time series. The paper proposes a method for synthesizing vector graphs in the phase subspaceof the interplanetary magnetic field (IMF). Results are considered of the reconstruction and analysisof implemented graphs based on the time series of satellite monitoring of the state of the IMF, provided bythe database of the NASA Goddard Space Flight Center since the beginning of 2023. The graph is constructedon the basis of experimental samples for projections of magnetic field vectors. Field vectors converge and divergeat the nodes of the graph, the edges of the graph allow one to control the analyzed trajectory of the system in thephase subspace and restore the transition tree for a particular vector field. The concept of a spherical referencesurface of a vector graph is introduced, which allows one to bring the compared implementations of graphs to asingle linear scale and a single curvature of the reference surface. Examples are considered under the action ofvarious external factors associated with the solar magnetic field and coronal mass ejections.