| |
 |
| Paper: |
Investigating the Driving Mechanisms of Coronal Mass Ejections |
| Volume: |
454, The 3rd Hinode Science Meeting |
| Page: |
403 |
| Authors: |
Lin, C.; Gallagher, P. T.; Raftery, C. L. |
| Abstract: |
The objective of this investigation was to first
examine the kinematics of
coronal mass ejections (CMEs) using EUV and coronagraph images, and then to
make a comparison with theoretical models in the hope to
identify the driving
mechanisms of the CMEs.
We have studied two CMEs which occurred on 2006 Dec. 17 (CME06) and 2007
Dec. 31 (CME07). The models studied in this work were
catastrophe, breakout,
and toroidal instability models.
We found that
after the eruption,
the accelerations of both events exhibited a drop before increasing again.
Our comparisons with the theories suggested
that CME06 can be best described by
a hybrid of the catastrophe and breakout models
while CME07 is most consistent with
the breakout model.
Based on
the catastrophe model, we deduced that the reconnection rate in the current
sheet for CME06 was intermediate, the onset of its eruption occurred at a
height of ∼200 Mm, and the Alfvén speed and the magnetic field strength
at this height were ∼130–250 km s-1 and 7 Gauss, respectively. |
|
|
|
|
|
