| |
 |
| Paper: |
The Formation of a Magnetic Channel by Emergence of Current-Carrying Magnetic Fields |
| Volume: |
454, The 3rd Hinode Science Meeting |
| Page: |
185 |
| Authors: |
Lim, E.-K.; Chae, J.; Jing, J.; Wang, H.; Wiegelmann, T. |
| Abstract: |
The term magnetic channel indicates a series of polarity reversals
separating elongated flux threads with opposite polarities. We
studied the formation process of the magnetic channel in AR 10930
using time sequence SP data taken by SOT/Hinode. As a result, we
detected both upflows (–0.5 to –1.0 km s-1) and downflows
(+1.5 to +2.0 km s-1) within the channel site, and a pair
of strong vertical current threads of opposite polarity along the channel.
We also analyzed coronal magnetic fields computed from the
non-linear force-free field extrapolation, and found that the
current density in the lower corona increased as the channel
structure evolved. These findings support the idea that the magnetic
channel represents the emergence of the twisted flux tube. |
|
|
|
|
|
