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Review and outlook of solar energetic particle measurements on multispacecraft missions

Reames, Donald V.

The earliest evidence of spatial distributions of solar energetic particles (SEPs) compared events from many different source longitudes on the Sun, but the early Pioneers provided the first evidence of the large areas of equal SEP intensities across the magnetically confined "reservoirs" late in the events. More detailed measurements of the impor…

The basic solar wind speed distribution and its sunspot cycle variations

Akasofu, Syun-Ichi; Lee, Lou-Chuang

In this paper, it is suggested that the latitudinal solar wind speed observed by the Ulysses spacecraft during the lowest solar activity (when both the ecliptic and magnetic equators coincide) may be identified as the basic speed distribution throughout the solar cycle. We demonstrate this suggestion by rotating this particular Ulysses distributio…

On the Variation of Intermittency of Fast and Slow Solar Wind With Radial Distance, Heliospheric Latitude, and Solar Cycle

Wawrzaszek, Anna; Echim, Marius

Intermittency, an important property of astrophysical plasma turbulence, is studied extensively during last decades fromin-situmeasurements of the solar wind plasma and magnetic field in the ecliptic plane and at higher latitudes, and heliocentric distances between 0.3 and 5 Astronomical Units. In this paper, we review the main findings on intermi…

A survey of solar wind conditions at 5 AU: A tool for interpreting solar wind-magnetosphere interactions at Jupiter

Bagenal, Fran; Ebert, Robert; McComas, David +1 more

We examine Ulysses solar wind and interplanetary magnetic field (IMF) observations at 5 AU for two ~13 month intervals during the rising and declining phases of solar cycle 23 and the predicted response of the Jovian magnetosphere during these times. The declining phase solar wind, composed primarily of corotating interaction regions and high-spee…