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| Paper: |
The Prominence/Coronal Cavity System: A Unified View of Magnetic Structures in the Solar Corona |
| Volume: |
463, 2nd ATST-EAST Workshop in Solar Physics: Magnetic Fields from the Photosphere to the Corona |
| Page: |
147 |
| Authors: |
Berger, T. |
| Abstract: |
Hinode/SOT and SDO/AIA movies have given us new insights into
the dynamic connections between prominences and coronal cavities. The
observations suggest that prominences and coronal cavities are
elements of a single large-scale structure in the solar corona: a
helical magnetic flux rope. We discuss supporting observational
evidence such as the relationship between the so-called “prominence
bubbles” discovered by Hinode/SOT and coronal cavities, as
well as spiral flows in the central regions of coronal cavities
observed by AIA. We hypothesize that coronal cavity flux ropes support
a form of magneto-thermal convection in which hot plasma and magnetic
flux are transported upward into the coronal cavity flux rope with
subsequent radiative cooling and condensation forming the partially
ionized prominence return flows seen in visible light
observations. Understanding the mass, magnetic flux, and helicity
transport of this complex system will lead to better understanding of
quiet Sun coronal mass ejections (CMEs). |
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