Fig. 4 from Yohkoh SXT Full‐Resolution Observations of Sigmoids: Structure, Formation, and Eruption

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Yohkoh SXT Full‐Resolution Observations of Sigmoids: Structure, Formation, and Eruption

Authors: Richard C. Canfield, Maria D. Kazachenko, Loren W. Acton, D. H. Mackay, Ji Son, and Tanya L. Freeman

Canfield et al. 2007 The Astrophysical Journal Letters 671 L81.

Provider: AAS Journals

Caption: Fig. 4.

Dependence of frequency of eruption of observed sigmoids on relative orientation of the sigmoid and the overlying field for Cycle 22 declining phase (left), 68 eruptions; Cycle 23 rising phase (center), 72 eruptions; Cycle 23 declining phase (right), 31 eruptions. Black: parallel; dark gray: perpendicular; light gray: antiparallel, as in Fig. 2. See discussion in § 3.4.

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