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Solar wind decrease at high heliographic latitudes detected from Prognoz interplanetary lyman alpha mapping

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Figure

Fig. 1. Schematic illustration of the interaction between the hy- drogen fJow and an anisotropic solar wind
Fig. 2. Five scan planes from the Prognoz 5 and 6 measurements are shown along the earth's orbit
Fig, 3. Measurements of the interplanetary Lyman ß emission (points) are represented as a function of spin angle ½ for the five observations at different ecliptic longitudes and are compared to two different models of the solar wind effec
Fig. 4. Influence of the ionization rate value illustrated as an ex- ample for S•. While the relative decrease of the ionization rate from equator to solar poles has been fixed at a constant value (A = 0.40), here the varying parameter is the ioni
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