Fan-shaped aurora as seen from Japan during a great magnetic storm on February 11, 1958Ryuho Kataoka, Shiori Uchino, Yasunori Fujiwara, Shigeru Fujita and Kazuaki YamamotoJ. Space Weather Space Clim., 9 (2019) A16DOI: https://doi.org/10.1051/swsc/2019013