Periodic Motion Along Solar Filaments |
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| Authors: | Ju Jing Jeongwoo Lee Thomas J Spirock Haimin Wang |
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| Institution: | (1) Center for Solar-Terrestrial Research, New Jersey Institute of Technology, Newark, NJ, 07102, U.S.A.;(2) Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA, 92314, U.S.A. |
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| Abstract: | 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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