Conjugate observations of the evolution of a long-duration polar cap arc in both hemispheres
Zan-Yang Xing, Shandong University, Jinan, China, Qing-He Zhang, National Space Science Center, Chinese Academy of Sciences, Beijing, China, Yongliang Zhang, Johns Hopkins University, Baltimore, MD, United States and Natsuo Sato, NIPR National Institute of Polar Research, Tokyo, Japan