Differential Electron Flux Spectra Measured by the Magnetospheric Multiscale Mission (MMS) Show Strong Field-aligned Electron Population of Ionospheric Origin

Conrad Schiff1, George V Khazanov2, Barbara L Giles3, Levon A Avanov4, James L Burch5, Victoria N Coffey6, John Dorelli7, Daniel J Gershman8, Benoit Lavraud9, Thomas Earle Moore10, William R Paterson4, Craig J Pollock11, Christopher T Russell12 and Robert J Strangeway13, (1)NASA Goddard Space Flight Center (Aurora Engineering), Greenbelt, United States, (2)NASA Goddard Space Flight Center, Greenbelt, United States, (3)NASA Goddard Space Flight Center, Heliophysics Science Division, Greenbelt, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)Southwest Research Institute, San Antonio, United States, (6)NASA Marshall Space Flight Center, Huntsville, AL, United States, (7)NASA Goddard Space Flight Center, Heliophysics Science Division, Greenbelt, MD, United States, (8)University of Maryland College Park, College Park, United States, (9)Laboratoire d'astrophysique de Bordeaux, Pessac, France, (10)NASA Goddard Space Flight Ctr, Greenbelt, United States, (11)Denali Scientific, San Antonio, United States, (12)University of California, IGPP/EPSS, Los Angeles, CA, United States, (13)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, United States