Parametric study of the kinematic evolution of coronal mass ejection shock waves and their relation to flaring activity

Open Access

Fig. 5.

Ratio b(t)/a(t) as a function of R_S in solar radius units for the 32 events. The colours correspond to the solar activity of the event day, with, from yellow to red, the smallest to the largest number of sunspots observed. The purple dashed line represents the overall ⟨b/a⟩ ratio, i.e. b = 1.02 × a.

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