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Fig. 3


Cartoon of the “removal-of-support” mechanism. a) In the initial equilibrium, inward magnetic tension is balanced by a supporting outward force from the magnetic pressure gradient. b) A flare below the loop removes magnetic energy from the corona, thereby reducing the loop’s support while the tension force is initially unchanged. c) Unbalanced forces accelerate the loop and it moves toward a new position where force balance is restored.

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