Latitude Variation of Recurrent Mev-energy Proton Flux Enhancements in the Heliocentric Radial Range 11 to 20 Au and Possible Correlation with Solar Coronal Hole Dynamics

Abstract

Recurrent low energy (>•0.5 MeV) proton flux enhancements, reliable indicators of corotating plasma interaction regions in interplanetary space, have been observed on the Voyager 1 and 2 and Pioneer 11 spacecraft in the heliographic latitude range 2'S to 23'N and the heliocentric radial range 11 to 20 AU. After a period of rather high correlation between… (More)

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