Abstract
A systematic study of the internal horizontal (line-of-sight) motions of quiescent prominences which were observed at the limb has been made by using fourier techniques to analyse the shift of the Ca ii K line as a function of height above the limb. The results indicate that a characteristic size for the velocity elements is present in ∼70% of the 13 prominences studied. This size of ∼4700 km is attributed to Alfvén waves induced by horizontal convective motions in the photosphere as previously suggested by Malville. The qualitative aspects of the observations are described by a simple model which is based on this hypothesis.
Original language | English (US) |
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Pages (from-to) | 307-313 |
Number of pages | 7 |
Journal | Solar Physics |
Volume | 51 |
Issue number | 2 |
DOIs | |
State | Published - Mar 1977 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science