Figure 1: Top: slit-jaw image of AR 10756 on April 29 ( nm) and simultaneous spectral images showing the Fe I 557.6 nm, Fe II 614.9 nm, and Fe I 709.0 nm lines along the slit. Tick marks are arcsec. Four dark-cored filaments are crossed by the slit; they are numbered 1-4 from top to bottom. The dark cores are marked with small horizontal dashes in the spectral images. Middle: normalized Fe I 557.6 nm and Fe I 709.0 nm intensity profiles emerging from dark cores 2 and 4 (solid lines), and their lateral brightenings ( 2 on either side; dotted and dashed lines). Bottom: bisectors observed in the dark cores (solid lines) and the lateral edges (dotted and dashed lines). Negative velocities indicate blueshifts. | |
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Figure 2: Left: slit-jaw image of AR 10756 on May 1 ( nm), normalized Fe I 709.0 nm profiles, and bisectors. Right: same, for May 2. | |
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Figure 3: Continuum intensity at 614.9 nm ( left) and field strength ( right) across four dark-cored filaments observed on April 29 and May 1. To minimize the effect of noise, the field strength curves have been computed from Fe II 614.9 nm profiles averaged over three pixels (0 12). | |
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