Equatorwards Expansion of Unperturbed, High-Latitude Fast Solar Wind
arXiv:1207.3952 · doi:10.1007/s11207-012-0081-y
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\odot). 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.
arXiv comment20 pages, 13 figures, accepted in Solar Physics