Manifestation of Magnetic Flux Ropes in the Structure of Solar Prominences

The appearance of quiescent solar prominences most often resembles a wide curtain or a fence made of a vertical palisade. It is hard to imagine that such a structure can be connected or even formed by a magnetic flux rope, that is, a bundle of force lines twisted into a cylindrical helix, which sometimes clearly manifests itself in active region filaments. However, with a relatively small activation of the prominences, when the plasma composing them begins to move along the field lines, the structure of the magnetic flux rope can be discerned. An example of a quiescent prominence is shown, in which rotational motion is observed along helical trajectories outlining the flux rope. The rotation is clearly visible in the time-distance diagram, which is composed of narrow strips of images of the prominence along the trajectory of motion.