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Observations of field aligned currents in the plasma sheet. Two kinds of field aligned currents generated during magnetotail convection

, 2009
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Field-aligned currents in the magnetosphere

Journal of Geophysical Research, 1967
Certain satellite and terrestrial observations of transient magnetic fluctuations show a high degree of localization, while other observations are of a definite worldwide character. The worldwide fluctuations in the magnetic field are probably well explained in terms of hydromagnetic waves propagating through the magnetosphere in modes with the wave ...
W. D. Cummings, A. J. Dessler
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Field-aligned (Birkeland) currents

Space Science Reviews, 1985
Following earlier suggestions of Edmond Halley and Anders Celsius for the “magnetic behavior” of auroral phenomena, Kristian Birkeland discovered in his polar expeditions of 1902–03 that large-scale electric currents were associated with the aurora. He was also the first to suggest that these currents originated far from earth and that they flowed into
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Field‐Aligned Currents in Auroral Vortices

Journal of Geophysical Research: Space Physics, 2021
Abstract Auroral bright spots have been observed at Earth, Jupiter, and Saturn in regions that map to the magnetopause boundary layer. It has been suggested that the bright spots are associated with the Kelvin‐Helmholtz (KH) instability.
Jay R. Johnson, Simon Wing, Peter Delamere, Steven Petrinec, Shiva Kavosi   +4 more
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Field‐aligned currents of postnoon auroral arcs

Journal of Geophysical Research: Space Physics, 2009
On 9 January 2008, postnoon (at about 15–16 magnetic local time [MLT]) poleward moving auroral arcs were observed over Svalbard during slightly negative interplanetary magnetic field (IMF) Bz and the IMF By gradually changing from near zero to about −3 nT.
Alexander Kozlovsky, Tauno Turunen, Stefano Massetti   +2 more
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Effects of Field-Aligned Currents on the Structure of the Ionosphere

Journal of Geophysical Research, 1968
The influence of electric currents along the magnetic field lines on the high-latitude F-layer ionosphere is investigated theoretically. It is shown that a current of either sign leads to a reduction of the total electron content and the maximum density, if the charge carriers have to be produced in the ionosphere.
L. P. Block, C. -G. Fälthammar
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Field‐aligned currents in the Earth's magnetotail

Journal of Geophysical Research: Space Physics, 1981
Three field‐aligned current sheets are directly observed with plasma and magnetometer instrumentation on board the ISEE spacecraft located at ∼20 RE in the postmidnight sector of the magnetotail. These current sheets are encountered at the northern plasma sheet boundary as the plasma sheet expanded past the spacecraft positions during the recovery ...
L. A. Frank, R. L. McPherron, R. J. DeCoster, B. G. Burek, K. L. Ackerson, C. T. Russell   +5 more
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Mapping of the ionospheric field‐aligned currents to the equatorial magnetosphere [PDF]

Journal of Geophysical Research: Space Physics, 1997
The assimilative mapping of ionospheric electrodynamics (AMIE)‐derived ionospheric field‐aligned current patterns during the ninth Coordinated Data Analysis Workshop substorm event have been mapped to the magnetospheric equatorial plane, using the data‐based magnetospheric magnetic field model [Tsyganenko, 1995].
Lu, G., Siscoe, G.L., Richmond, A.D., Pulkkinen, T.I., Tsyganenko, N.A., Singer, H.J., Emery, B.A.   +6 more
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Field-Aligned Currents in Auroral Vortices

2020
Auroral bright spots have been observed at Earth, Jupiter, and Saturn in regions that map to the boundary layer. It has been suggested that the bright spots are associated with Kelvin-Helmholtz instability. We utilize a quasistatic magnetosphere-ionosphere coupling model driven by a vortex in the boundary layer to determine how the ...
Jay Robert Johnson, Simon Wing, Peter A Delamere   +2 more
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Field-aligned currents and the auroral electrojet

Journal of Geophysical Research, 1974
A Nike Tomahawk with fields and particles payload was launched on Nov. 18, 1970, over a strong westward electrojet current and auroral forms moving rapidly to the east. Electron fluxes moving up and down the magnetic field lines were measured. Upward-moving electrons below 1-keV energy were dominant and were equivalent to a net downward electric ...
L. J. Cahill, W. E. Potter, P. M. Kintner, R. L. Arnoldy, L. W. Choy   +4 more
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