The influence of IMF cone angle on invariant latitudes of polar region footprints of FACs in the magnetotail: Cluster observatio

Zhengwei Cheng, NSSC/Chinese Academy of Sciences, Beijing, China, Jiankui Shi, National Space Science Center, Chinese Academy of Sciences, Beijing, China, Jichun Zhang, University of New Hampshire, Durham, NH, United States and Lynn M Kistler, Univ New Hampshire, Durham, United States