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Electron distributions in the plasma sheet boundary layer: Time‐of‐flight effects
Author(s) -
Onsager T. G.,
Thomsen M. F.,
Gosling J. T.,
Bame S. J.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i011p01837
Subject(s) - plasma sheet , electron , boundary layer , physics , plasma , ion , atomic physics , geophysics , magnetic field , computational physics , electron temperature , enhanced data rates for gsm evolution , magnetosphere , mechanics , nuclear physics , quantum mechanics , telecommunications , computer science
The electron edge of the plasma sheet boundary layer lies lobeward of the ion edge. Measurements obtained near the electron edge of the boundary layer reveal low‐speed cutoffs for earthward and tailward‐flowing electrons. These cutoffs progress to lower speeds with deeper penetration into the boundary layer, and are consistently for the earthward‐directed electrons than for the tailward‐directed electrons. The cutoffs and their variation with distance from the edge of the boundary layer can be consistently interpreted in terms of a time‐of‐flight effects on recently reconnected magnetic field lines. The observed cutoff speeds are used to estimate the downtail location of the reconnection site.