Coronal structures having various forms and dynamics, often bifurcate into a long living, well organized multi-thread loop arcades. To describe this process we use the model of energetically open system, consisting of current carrying magnetic loops that interconnect a high β energy production region with a low dissipation region through the resistive stresses. The model includes feedback managed by the transition region. Such a system may be driven into various dynamic forms including spontaneous process of self-organization.
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