Image Details
Caption: Figure 7.
The long slow wind interval observed by NH in the outer heliospheric ecliptic occurred when slow solar wind was emitted by the coronal streamers in the ecliptic. The slow interval marked in pink began at solar minimum when the current sheet tilt angle was low, confining the coronal streamers that emit slow solar wind to low latitudes. The bottom panels are time series plots of the solar wind speed along the NH trajectory (top panel), the radial distance to the Sun from NH and latitude of NH (second panel), the monthly and 13 month smoothed sunspot number (third panel), and the current sheet tilt angle (bottom panel). The steep tilt angle recovery and speed recovery are denoted in blue.
© 2026. The Author(s). Published by the American Astronomical Society.