New evidence for oscillatory motions in a quiescent prominence
Abstract
Detailed line-profile analyses have been carried out for Ca II K-line time-series spectra successively obtained at two graded heights in a quiescent prominence. Line-of-sight velocity variations of around 10-min period, with amplitudes of 1.2 - 3.0 km s-1, have been detected successively over some 5,000 km at the corresponding locations of the both heights along the spectrograph slit, hereby providing new evidence for reconfirming the earlier result that there are some specific regions in prominences where periodic oscillations or waves can be amplified.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- 1988
- Bibcode:
- 1988PASJ...40..121T
- Keywords:
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- Solar Oscillations;
- Solar Prominences;
- Spectral Line Width;
- Velocity Distribution;
- Calcium;
- K Lines;
- Time Series Analysis;
- Solar Physics