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Fig. 1


Heliosheath He ions spectral intensities based on published data. Oblique colored (numbered) dotted lines correspond to low-energy (<2 MeV/n, γ = −1.65) fits to He data obtained at different epochs as indicated in the upper right corner: 1. magenta (upward triangle): V1 (Stone et al. 2008b); 2. green (circle): V1 (Decker et al. 2005); 3. dark blue (square): V1 (Stone et al. 2008a); 4. brown (downward triangle): V1 (Stone et al. 2008b); and 5. red (diamond): V2 (Stone et al. 2008b). He/H data are denoted by filled/empty symbols and ions data by small symbols. Solid light blue line describes a kappa distribution with κ = 1.65 and average He+ ion energy at the termination shock equal to 1.5 keV/n. Short dashed black line in the upper left corner shows (part of) the run of the initial He spectrum used by Czechowski et al. (2012).

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