Fig. 6
Energy spectrum of He++ in the F′ region of CIR 04 is shown with blue dots. The temporal evolution of three spectra in the F region are illustrated with green rectangles and red and cyan triangles. The fitted dashed curves through the observed points are based on the theory of Fisk & Lee (1980). The turnover shape of the spectra is clearly visible in the fast-wind region of CIR 04.
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