The non-orthogonal X-lines: MMS observations and possible causes

Yi Qi1, Robert Ergun2, Neha Pathak3, Stefan Eriksson4, Alexandros Chasapis5, Steven J Schwartz6, Narges Ahmadi1, Tien Vo1, Maria Usanova7 and Frederick D Wilder8, (1)Laboratory for Atmospheric and Space Physics, Boulder, United States, (2)Univ Colorado, Boulder, United States, (3)University of Colorado at Boulder, Boulder, United States, (4)Univ Colorado, Boulder, CO, United States, (5)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (6)Imperial College London, London, United Kingdom, (7)University of Alberta, Edmonton, Canada, (8)University of Texas at Arlington, Arlington, TX, United States