Twisted buoyant magnetic flux ropes in a magnetized stellar envelope

Grey-scale panel showing snapshots of Bz at time units for models with moderately magnetized envelopes. Minimum (zero) and maximum magnetic field strengths are stated for every snapshot (in units of 354 kG). Vertical dimension corresponds to x in the simulations. Shown are model 0 (shown twice), and in the upper row models 2A and 2B (initial ) and in the lower row models 3A and 3B (initial ). Also shown are horizontal lines indicating the initial position of the magnetized layer.