All Figures

Figure 1: The two basic prominence types: the normal configuration ( top left picture) and the inverse configuration ( top right picture). The prominence is represented by the thick vertical line in each sketch, supported against gravity by the magnetic tension force of the concave upward lines of magnetic force in the lower half of the flux rope (closed curves in each of the two sketches). The flux rope is shown as a shaded sheet of dense plasma embedded in a flux rope in a 3D perspective sketch ( bottom picture) which shows the strong axial component of the magnetic field, the component parallel to the long axis of the prominence.

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In the text

	Figure 2: Illustration of the x-self-similarity of the solution: two field lines defined by  and  differ from each other only by a vertical translation, such that for any point (Z1 ,X) on the first field line, the corresponding point on the second field line (Z2 ,X) can be found from it by moving vertically a distance  .
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In the text

Figure 3: Selection of periodic solutions. The right picture shows the same solutions as the left picture with the X-axis magnified. The solid line is a solution whose physical parameter values at the bottom of each dip are as follows: the temperature is 8000 K, the velocity is 10 km s-1, the magnetic field strength is 2 G and the gas density is   g/cm3. This solution is clearly periodic with period about 10 Mm. The dotted line is a solution with dip parameter values equal to those of the solid line except that the magnetic field strength is only 1 G. The dashed line is a solution with dip parameter values equal to those of the solid line except that the velocity is 20 km s-1.

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In the text

Figure 4: Prominence field line projection in X-Z plane ( left), X-Y plane ( right) and an oblique 3D perspective view ( bottom) with the prominence dip and polarity inversion line at X=0. Note the correspondence between these near-horizontal lines with strong axial component and the intersections of the flux rope magnetic field with the prominence sheet in Fig. 1, where the field also is nearly horizontal and has a strong axial component.

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In the text

	Figure 5: Plots of the gas density ( top left), temperature ( top right) and velocity ( bottom) plots inside the prominence.
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In the text

Figure 6: Shown is the momentum breakdown along and across the magnetic field. We graph components across the field line in the X-Z plane ( top pictures) on a larger ( left) and a smaller ( right) scale, along the field line ( bottom left) and across the field line in the Y-direction ( bottom right). In the field-aligned plots positive momentum means momentum directed from the left foot point to the right, in the X-Z-plane cross-field plots positive momentum is momentum directed from inside the structure outwards while in the Y-direction plots positive momentum is momentum in the direction of increasing Y.

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In the text

Figure 7: Energy ( left pictures) and heating ( right pictures) profiles of the prominence. The potential energy is the dominant energy of the prominence plasma because of the very large density of this plasma. The thermal energy is much smaller while the kinetic energy is much smaller still, barely visible on the graph. In the right picture, the radiative losses  (a symmetric function) are larger than the conduction (a small symmetric function on the graph) and the net heat in/out q (the antisymmetric function shown). It can be seen from the graph of q compared to  that the flow may have an influence on the thermodynamics of the prominence plasma.

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In the text