Orientation of Middle-Scale Structures in the Solar Wind Plasma |
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Authors: | P A Dalin G N Zastenker J D Richardson |
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Institution: | (1) Space Research Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117997, Russia;(2) Center for Space Research, MIT, Cambridge, USA |
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Abstract: | An estimation of the value and orientation of the inclination of middle-scale structures in the solar wind plasma is obtained on the basis of time lags of simultaneous correlated measurements on three spacecraft: INTERBALL-1, IMP-8, and WIND. It is shown that middle-scale plasma structures, in the majority of cases, are not perpendicular to the Sun–Earth line, but inclined to it (presumably, in the ecliptic plane), on average, at an angle of approximately 63° (or 27° to the Y
SE axis). However, this inclination is significantly less than the inclination of the Parker spiral for the interplanetary magnetic field (45° at the Earth's orbit). |
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