Auroral spiral formation through magnetic reconnection in the auroral acceleration region

Yi-Hsin Liu1, Kai Huang2, Quanming Lu3, Zejun Hu4, Kristina Lynch5, Michael Hesse6, Andris Vaivads7 and Huigen Yang4, (1)Dartmouth College, Physics and Astronomy, Hanover, United States, (2)University of Science and Technology of China, Hefei, China, (3)Univ. Sci. & Tech. of China, Hefei, China, (4)Polar Research Institute of China, Shanghai, China, (5)Dartmouth College, Hanover, NH, United States, (6)NASA Ames Research Center, Moffett Field, United States, (7)School of Electrical Engineering and Computer Science, Royal Institute of Technology, Department of Space and Plasma Physics, Stockholm, Sweden