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Energetic Particles and Coronal Mass Ejections: a Case Study From ace and Ulysses

Simnett, G. M.

In 2001 the Ulysses spacecraft crossed the ecliptic plane near perihelion. The heliographic longitude with respect to the Earth was within ± 20° of the west solar limb while it was ± 15° of the ecliptic plane, which meant that coronal mass ejections seen off the solar west limb were likely to pass over Ulysses. On 10 May the largest > 38 keV el…