Chromosphere Generation in Magnetic Flux-Tubes
The localization of the magnetic field in concentrated flux-tubes leads to thermal structures in the upper solar atmosphere. There the difference in the perpendicular to magnetic field velocities of ions, electrons and neutrals, produces a privileged trapping of ions inside flux-tubes. The electric current required to confine these ions can be generated in the photosphere. This DC current, together with a 1 km s-1 plasma upflow in the upper photosphere, would generate a chromosphere inside the flux-tubes.
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