Equatorwards Expansion of Unperturbed, High-Latitude Fast Solar Wind
Abstract
We use dual-site radio observations of interplanetary scintillation (IPS) with extremely long baselines (ELB) to examine meridional flow characteristics of the ambient fast solar wind at plane-of-sky heliocentric distances of 24-85 solar radii (R). Our results demonstrate an equatorwards deviation of 3-4 in the bulk fast solar wind flow direction over both northern and southern solar hemispheres during different times in the declining phase of Solar Cycle 23.
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