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The fine structure of prominences

✍ Scribed by Oddbjørn Engvold

Publisher
Springer
Year
1976
Tongue
English
Weight
727 KB
Volume
49
Category
Article
ISSN
0038-0938

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📜 SIMILAR VOLUMES

The fine structure of prominences
The fine structure of prominences
✍ O. Engvold; J. McKim Malville 📂 Article 📅 1977 🏛 Springer 🌐 English ⚖ 354 KB

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

A model of a quiescent prominence on the
A model of a quiescent prominence on the basis of studying the K Ca+line fine structure
✍ M. Sh. Gigolashvili; Yu. D. Zhugzhda 📂 Article 📅 1983 🏛 Springer 🌐 English ⚖ 198 KB

A model of a quiescent prominence with nonparallel structural elements, based on a study of the K Ca § line fine structure of two quiescent prominences. The dependences of the radial velocities on the height found for the structural elements making up the prominence (Gigolashvili and Zhugzhda, 1982)

Prominence fine structure
Prominence fine structure
✍ J. B. Zirker; S. Koutchmy 📂 Article 📅 1990 🏛 Springer 🌐 English ⚖ 747 KB

The vertical fine structure in a quiescent prominence was modelled as an assembly of very narrow, optically thin threads. Random clusterings of the threads can account for the observed contrast and He line profiles of the fine structures. In this picture, each structure consists of a cluster of 7-20

Thermodynamic models and fine structure
Thermodynamic models and fine structure of prominences
✍ O. Engvold 📂 Article 📅 1980 🏛 Springer 🌐 English ⚖ 246 KB

Observed Ha brightness versus size of emission substructures of quiescent prominences are compared with values predicted from thermodynamical models. The measured size of an emission element of a given brightness is substantially less than the theoretical value. Two possible causes for the discrepa

Prominence fine structure II: Diagnostic
Prominence fine structure II: Diagnostics
✍ J. B. Zirker; S. Koutchmy 📂 Article 📅 1991 🏛 Springer 🌐 English ⚖ 608 KB

A random-clustering model of prominence fine-structure has been applied to observations of prominence Ha spectra. The model yields an estimate of the number of unresolved elements that form an individual resolved feature, and sets limits on their velocity and Ha profile dispersions.