Periodic motion along solar filaments

Ju Jing, Jeongwoo Lee, Thomas J. Spirock, Haimin Wang

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

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 (≥80 min), large distance (≥ 4 × 104 km) of mass transport at much higher velocity (≥ 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.

Original languageEnglish (US)
Pages (from-to)97-109
Number of pages13
JournalSolar Physics
Volume236
Issue number1
DOIs
StatePublished - Jun 2006

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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