Abstract
The evolution of magnetic helicity in a rapidly growing active region is governed mainly by the advection of magnetic fields into the photosphere. Dissipation at the photosphere makes only a minor contribution to helicity evolution. Current helicity dissipation in the three-dimensional domain around the active region can be ignored.
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Jingxiu, W. A note on the evolution of magnetic helicity in active regions. Sol Phys 163, 319–325 (1996). https://doi.org/10.1007/BF00148004
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DOI: https://doi.org/10.1007/BF00148004