Image Details
Caption: Figure 5.
Time–distance maps of the ratio between the local Alfvén wavelength, λA, and the characteristic length scale of the Alfvén speed variation, LA, along the y-direction at (a) x = 0, z = 20 Mm and (b) x = 0, z = 40 Mm. The black dashed lines indicate the positions at y = 0 and y = 0.8 Mm.
© 2026. The Author(s). Published by the American Astronomical Society.