Periodic Motion Along Solar Filaments

Details Periodic Motion Along Solar Filaments Periodic Motion Along Solar Filaments

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006soph..236...97j&link_type=abstract

Soar Physics, vol. 236, Issue 1, p.97-109

Physics

18

Scientific paper

We present observations of four filaments that exhibit large-amplitude periodic mass motion. Observations are obtained using the high resolution (2″) and high cadence (1 min) Hα telescope system at the Big Bear Solar Observatory (BBSO). The motions found in these events are along the axis of the filaments, and are associated with the activity of a nearby flare or filament. The most characteristic properties of these motions are long period (≥ q80 min), large distance (≥ q 4 × 104 km) of mass transport at much higher velocity (≥ q 30 km s-1) than ever detected from filament motions. The velocity, period, dimension and damping timescale measured for these motions are presented, and discussed to identify the most plausible restoring force and damping mechanism.

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