Imogen Gingell^1,2, Steven J Schwartz^3,4, Jonathan P Eastwood⁵, Julia E Stawarz³, James L Burch⁶, James Webster⁷, Stephen A Fuselier⁸, Daniel J Gershman⁹, Barbara L Giles¹⁰, Yuri Khotyaintsev¹¹, Benoit Lavraud¹², Per-Arne Lindqvist¹³, William R Paterson¹⁴, Tai Phan¹⁵, Christopher T Russell¹⁶, Robert J Strangeway¹⁷, Roy B Torbert¹⁸ and Frederick D Wilder¹⁹, (1)University of Southampton, Southampton, United Kingdom, (2)Imperial College London, London, SW7, United Kingdom, (3)Imperial College London, London, United Kingdom, (4)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (5)Imperial College London, Physics, London, United Kingdom, (6)Southwest Research Institute San Antonio, San Antonio, TX, United States, (7)University of Colorado, Boulder, CO, United States, (8)Southwest Research Institute, San Antonio, TX, United States, (9)NASA Goddard Space Flight Center, Heliophysics Science Division, Greenbelt, MD, United States, (10)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (11)IRF Swedish Institute of Space Physics, Uppsala, Sweden, (12)IRAP/CNRS, Toulouse, France, (13)KTH Royal Institute of Technology, Stockholm, Sweden, (14)NASA Goddard Space Flight Center, Geospace Physics Laboratory, Greenbelt, MD, United States, (15)Univ California, Berkeley, CA, United States, (16)University of California Los Angeles, Department of Earth Planetary and Space Sciences, Los Angeles, CA, United States, (17)Univ California, Los Angeles, CA, United States, (18)Univ New Hampshire, Durham, NH, United States, (19)University of Colorado at Boulder, Boulder, CO, United States