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Why are the patterns S-shaped (and inverse S)? What properties of the magnetic loops in the solar corona make groups of them form an S?

April 26, 2017Corona inverse loops MAGNETIC patterns properties s-shaped solar

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Why are the patterns S-shaped (and inverse S)? What properties of the magnetic loops in the solar corona make groups of them form an S?

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The patterns are S (and inverse S) shaped because the magnetic field lines that comprise them are twisted, rather like a slinky, but not so densely coiled. The field lines are three-dimensional, but they look like an S, in projection.