𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Can oscillations grow in a sunspot umbra?

✍ Scribed by D. J. Mullan; H. S. Yun


Publisher
Springer
Year
1973
Tongue
English
Weight
441 KB
Volume
30
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


HΞ± oscillations in sunspot umbrae
✍ Gary L. Phillis πŸ“‚ Article πŸ“… 1975 πŸ› Springer 🌐 English βš– 689 KB

Direct measurement of intensity and photographic subtractions of simultaneous Doppler filtergrams at Hc~zk0.3 ,~ in a time-lapse sequence of McMath 11482 has shown velocity oscillations in sunspot umbrae. These oscillations exhibit the following characteristics: (a) A characteristic oscillation freq

Interpretation of oscillations in UV lin
✍ J. Staude; Y. D. Ε½ugΕΎda; V. Locāns πŸ“‚ Article πŸ“… 1985 πŸ› Springer 🌐 English βš– 475 KB

Our theory of a resonator for slow magneto-atmospheric waves in the chromosphere of a sunspot umbra has been used to check different models of the structure of the chromosphere and transition region. Oscillations of velocity and intensity in CIV, SiIv, and OIv lines observed by Gurman et al. (1982)