| |
 |
| Paper: |
He I 10830 AA Doppler Oscillations in a Solar Filament |
| Volume: |
154, Cool Stars, Stellar Systems and the Sun: Tenth Cambridge Workshop |
| Page: |
650 |
| Authors: |
Molowny-Horas, R.; Baudin, F.; Oliver, R.; Ballester, J. L. |
| Abstract: |
The results of a high spatial resolution investigation of Doppler oscillations in a solar filament, using the He 1 10830 AA infrared spectral line, are presented. Fourier periodograms, and the so-called wavelet analysis, have been employed to study the existence of periodic signals. We have focused on the analysis of two conspicuous features along the slit, showing oscillatory motions with typical periods of 2.7 min and 12.5 min. An estimate of their spatial size gives 2.7 arcsec and 4.75 arcsec, respectively. Their approximate lifetimes, yielded by the wavelet technique, are also 10 and 20 minutes. |
|
|
|
|
|
