Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ap%26ss.337...33e&link_type=abstract
Astrophysics and Space Science, Volume 337, Issue 1, pp.33-37
Astronomy and Astrophysics
Astrophysics
1
Sun: Spicules, Mhd Waves: Dispersion Relation, Kink Modes
Scientific paper
We analyze the time series of Ca ii H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergos quasi-periodic transverse displacement at different heights from the photosphere. The mean period of transverse displacement is ˜180 s and the mean amplitude is 1 arc sec. Then, we solve the dispersion relation of magnetic tube waves and plot the dispersion curves with upward steady flows. The theoretical analysis shows that the observed oscillation may correspond to the fundamental harmonic of standing kink waves.
Ebadi H.
Zaqarashvili Teimuraz V.
Zhelyazkov Ivan
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