Image Details
Caption: Figure 1.
Left: an illustration showing the SDO AIA 131 Å view, from the direction of Earth, at 06:48 UTC on 2021 October 9 (J. R. Lemen et al. 2012). The active region of interest is marked with the red box. Right: an illustration showing the spacecraft positions on the day of the flare and their Parker spiral curves linking them to the Sun (J. Gieseler et al. 2023).
© 2026. The Author(s). Published by the American Astronomical Society.