Van Allen Probes Observations of Oxygen Ions at the Geospace Plume by Foster, John C, Erickson, Philip J

“…In the “notch” region of lower density plasma outside the morning-side plasmapause, bi-directionally field aligned fluxes of lower energy (<5 keV) ions, following corotation-dominated drift trajectories from the midnight sector, are excluded from geospace plume field lines as they are deflected sunward in the plume flow channel. …”
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Prompt energization of relativistic and highly relativistic electrons during a substorm interval: Van Allen Probes observations by Baker, D. N., Claudepierre, S. G., Kletzing, C. A., Kurth, W., Reeves, G. D., Thaller, S. A., Spence, H. E., Shprits, Y. Y., Wygant, J. R., Foster, John C, Erickson, Philip J

“…We present multi-instrument observations from the Van Allen Probes spacecraft Radiat ion Belt Storm Probe A and Radiation Belt Storm Probe B at ~6 Re in the midnight sector magnetosphere and from ground-based ionospheric sensors during a substorm dipolarization followed by rapid reenergization of multi-MeV electrons. …”
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Multiradar observations of the polar tongue of ionization by McCready, M., van Eyken, A., Barnes, R. J., Greenwald, R. A., Rich, F. J., Foster, John C, Coster, Anthea J, Erickson, Philip J, Holt, John M, Lind, Frank David, Rideout, William C

“…The three incoherent scatter radars provided full altitude profiles of plasma density, temperatures, and vertical velocity as the TOI plume crossed their different positions, under the cusp, in the center of the polar cap, and at the midnight oval/polar cap boundary. Greatly elevated F peak density (>1.5E12 m[superscript −3]) and low electron and ion temperatures (∼2500 K at the F peak altitude) characterize the SED/TOI plasma observed at all points along its high‐latitude trajectory. …”
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