Fig. 5.
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Model results for the He I 58.4 nm brightness along the Sun–Mercury line as functions of the distance from the Mercury’s center at a TAA of 0 (filled square), 180 (asterisk), and 270 (filled circles) degrees with the line width of the solar He I 58.4 nm emission of 0.0016 nm (top panel, Kumar et al. 1973) and 0.015 nm (bottom panel, Wilhelm et al. 1997).
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