Ultraviolet oscillations in the chromosphere of the quiet Sun
作者： R. T. James McAteer , Peter T. Gallagher , D. Shaun Bloomfield , David R. Williams , Mihalis Mathioudakis
DOI: 10.1086/380835
关键词:
摘要: Quiet-Sun oscillations in the four Transition Region and Coronal Explorer (TRACE) ultraviolet passbands centered on 1700, 1600, 1216, 1550 A are studied using a wavelet-based technique. Both network internetwork regions show with variety of periods lifetimes all passbands. The most frequent oscillation has period 283 s, lifetime 2-3 cycles These discussed terms upwardly propagating magnetohydrodynamic wave models. 252 again cycles, tendency for these to recur same position is "persistent flashers." contains greater oscillatory power than at longer 300 s low chromosphere. This value shown decrease 250 high also displays larger number short-lifetime, long-period network, especially contain small nonrecurring long-lifetime oscillations.
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