Fig. 2.
Observed double-peak Stokes V profile (red) vs. standard V profile (black) normalized to their maximum amplitudes (0.2% and 0.1%, respectively) in the Na I D1 line. The profiles were measured at the THEMIS solar telescope. See similar profiles (taken in same campaign as ours) in Fig. 5 of López Ariste et al. (2009). We also found them in Fig. 3 of Bommier & Molodij (2002).
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