We suggest that the fibril structure of prominences may be caused by filamentation during its formation by radiative instability. We also discuss the effects of other types of instability and give a mechanism for the formation of vertical threads. The models indicate that highly inhomogeneous densit
The fibril structure of prominences
β Scribed by A. W. Hood; E. R. Priest; U. Anzer
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 743 KB
- Volume
- 138
- Category
- Article
- ISSN
- 0038-0938
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β¦ Synopsis
In this paper we present several magneto-hydrostatic equilibrium models for prominences with fibril-like fine structure. For all the models ad hoc temperature profiles are used without discussing the energetics. For our models we assume fine structure to occur either across the prominence axis or along it. This approach is intended as a first step towards more realistic models based upon a series of vertical fibril structures.
π SIMILAR VOLUMES
Faint, Doppler shifted, emission features are detected in high resolution spectra of limb prominences. Their average line-of-sight velocity is about 3 x 106 cm s i, their average life time is 300 s, and their angular sizes are ~<10 s cm in our spectrograms. The emission line width of the spectral fe