Figure 5: Derivation of the geometry of a self-similar expanding ellipse in the ElEvo model. | Nature Communications

Figure 5: Derivation of the geometry of a self-similar expanding ellipse in the ElEvo model.

From: Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars

Figure 5

(a) A CME leading edge, a shock or the front of a flux rope, described as an ellipse, propagates away from the Sun in the ecliptic or solar equatorial plane with constant angular width and aspect ratio. (b) Geometry for deriving the speed of any point along the front of the CME leading edge.

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