High-Resolution Study of the Relationship Between the Region 2 Birkeland Current Equatorward Boundary and Soft Electron Fluxes
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The nightside Region 2 (R2) Field Aligned Current (FAC) system is associated with magnetospheric dynamics occurring close to the inner magnetosphere. The current carriers for this system have been studied extensively at higher energies. In this study, we investigate the potential role of electrons in the less studied suprathermal (sub-keV) range. The Enhanced Polar Outflow Probe (e-POP) instrument suite on the CASSIOPE satellite (Swarm Echo) consists of eight plasma instruments, including the Suprathermal Electron Imager (SEI) and the magnetic field instrument (MGF). The SEI records two-dimensional energy-angle images of electron distribution for energies up to 350 eV at a rate of 100 images per second. The MGF samples the magnetic field at a sampling rate of 160 times per second with a resolution of 0.0625 nT. Even though ePOP, whose scientific focus is polar outflow, does not detect high-energy particles (