Fig. 9.
Lorentz factor at escape, γF, vs. Lorentz factor at injection, γ, for protons (top) and electrons (bottom) injected at different distances: d = 1014 cm (blue solid line), d = 1015 cm (dashed green line), d = 1016 cm (dashdotted brown line), and d = 1017 cm (dotted red line). For these results we adopted a typical surface value of B⋆ ≈ 100 G for a high-mass star.
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