Quasi-equilibrium flux rope and the associated prominence at t ≈ 13 hr. (A) Magnetic field lines of the flux rope colored by their original flux surfaces in the emerging torus confined under the field lines of the overlying coronal streamer and the lower boundary colored by the radial magnetic field, B_r. Synthetic SDO/AIA 304 Å emission shows a vertically extended sheet in the side view (B) and a barb-bearing filament in the top view (C). The accompanying animation follows the prominence-carrying flux rope from quasi-equilibrium through slow rise and eruption.

(An animation of this figure is available in the online article.)

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.