| |
 |
| Paper: |
Prominence Seismology |
| Volume: |
455, 4th Hinode Science Meeting: Unsolved Problems and Recent Insights |
| Page: |
211 |
| Authors: |
Arregui, I.; Ballester, J. L.; Oliver, R.; Soler, R.; Terradas, J. |
| Abstract: |
Given the difficulty in directly determining prominence physical
parameters from observations, prominence seismology stands as an
alternative method to probe the nature of these structures. We show
recent examples of the application of magnetohydrodynamic (MHD)
seismology techniques to infer physical parameters in prominence
plasmas. They are based on the application of inversion techniques
using observed periods, damping times, and plasma flow speeds of
prominence thread oscillations. The contribution of Hinode to
the subject has been of central importance. We show an example based
on data obtained with Hinode's Solar Optical
Telescope. Observations show an active region limb prominence,
composed by a myriad of thin horizontal threads that flow following a
path parallel to the photosphere and display synchronous vertical
oscillations. The coexistence of waves and flows can be firmly
established. By making use of an interpretation based on transverse
MHD kink oscillations, a seismological analysis of this event is
performed. It is shown that the combination of high quality Hinode
observations and proper theoretical models allows flows and waves to
become two useful characteristics for our understanding of the nature
of solar prominences. |
|
|
|
|
|
