Fig. 15.

Left: Stokes I and Stokes V LSD profiles ordered as a function of Julian date. Middle: Stokes I and Stokes V LSD profiles ordered as a function of rotational phase. Right: Stokes I and Stokes V profiles of the HeI 587.6 nm line’s narrow component ordered as a function of rotational phase. The broad component of the HeI line profile has been fitted by a Gaussian and subtracted. The color code corresponds to successive rotational cycles.
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