While the National Science Foundation’s Daniel K. Inouye Solar Telescope will stare at the Sun to detect magnetic fields, it first has to focus on objects far away – other celestial objects visible only in the night sky.
The figure shows the variation of the meridional flow as slices of time and depth for eight latitudes from mid-latitudes (top) to the equator (bottom) averaged over both hemispheres. The mean value has been subtracted to highlight the variation with time. The band of faster-than-average (poleward) meridional flow (yellow-red) is the most noticeable feature moving […]