| Autor: |
Kobanov, N., Kustov, A., Chupin, S., Pulyaev, V. |
| Předmět: |
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| Zdroj: |
Solar Physics; Oct2011, Vol. 273 Issue 1, p39-49, 11p, 1 Chart, 6 Graphs |
| Abstrakt: |
An analysis of line-of-sight velocity oscillation in nine solar faculae was undertaken with the aim of studying phase relations between chromospheric (He i 10830 Å line) and photospheric (Si i 10827 Å line) five-minute oscillations. We found that the time lag of the chromospheric signal relative to photospheric one varies from −12 to 100 seconds and is about 50 seconds on average. We assume that the small observed lag can have three possible explanations: i) convergence of formation levels of He i 10830 Å and Si i 10827 Å in faculae; ii) significant increase of five-minute oscillation propagation velocity above faculae; iii) simultaneous presence of standing and travelling waves. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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