Abstract
In plasma turbulence, the helical and (nearly) periodic phenomena do not necessarily correspond to linear waves. Plasmas in different environments present distinct dynamical characters, including various nonlinear structures, and two alternative nonlinear mechanisms are presented to be able to lead to relevant sub-ion chirality issues in solar winds: helical turbulent modes and integrable structures (e.g., the breathers). The former is explained by revisiting a recent proposal on studying solar wind with extended magnetohydrodynamics; the latter is argued with multidisciplinary-supporting information. If there are possible contributions from breathers, it may not be accurate to attribute the non-zero frequency spectrum to the propagating (linear) waves.
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