Results 11 to 20 of about 177,034 (301)

Field-aligned currents in Saturn's northern nightside magnetosphere: Evidence for interhemispheric current flow associated with planetary period oscillations [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2015
We investigate the magnetic perturbations associated with field-aligned currents observed on 34 Cassini passes over the premidnight northern auroral region during 2008.
Alexeev, II   +8 more
core   +3 more sources

On the Relationship Between Regions of Large‐Scale Field‐Aligned Currents and Regions of Plateau in Plasma Pressure Observed in the Equatorial Plane of the Earth's Magnetosphere

open access: yesGeophysical Research Letters, 2023
Since the discovery of the large‐scale field‐aligned currents it is widely acknowledged that gaps exist between the Region 1 (R1) and Region 2 (R2) currents in which the current values are relatively small as compared to neighboring regions.
I. P. Kirpichev   +2 more
doaj   +1 more source

Next generation magnetic field measurements from low-earth orbit satellites enable enhanced space weather operations

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Large-scale current systems in the ionosphere and the magnetosphere are intimately controlled by the solar wind-magnetosphere interaction and the magnetosphere-ionosphere coupling.
Guan Le   +14 more
doaj   +1 more source

Magnetic field-aligned plasma currents in gravitational fields [PDF]

open access: yesAnnales Geophysicae, 2015
Analytical models are presented for currents along vertical magnetic field lines due to slow bulk electron motion in plasmas subject to a gravitational force.
O. E. Garcia   +3 more
doaj   +1 more source

Field‐aligned current response to solar indices [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2017
AbstractMagnetometer data from three satellite missions have been used to analyze and identify the effects of varying solar radiation on the magnitudes and locations of field‐aligned currents in the Earth's upper atmosphere. Data from the CHAMP, Ørsted, and Swarm satellite missions have been brought together to provide a database spanning a 15 year ...
Thom R. Edwards   +3 more
openaire   +2 more sources

Current carriers for the field-aligned current system [PDF]

open access: yesAdvances in Space Research, 1985
The Dynamics Explorer satellites have returned a large body of data containing high resolution magnetometer measurements and distributions of charged particles of all but thermal electrons. From these data the relations of the field aligned currents to particle precipitation structures were investigated and the charge carriers were identified.
R.A. Hoffman, M. Sugiura, N.C. Maynard
openaire   +1 more source

Relationships between field-aligned currents and convection observed by EISCAT and implications concerning the mechanism that produces region-2 currents: Statistical study [PDF]

open access: yesAnnales Geophysicae, 1994
Fluid theories explain the origin of region-2 field-aligned currents as the closure of the ring current, driven itself by the azimuthal pressure gradients generated in the magnetospheric ring plasma by the sunward convection. Although the structure of
C. Peymirat, D. Fontaine
doaj   +1 more source

Empirical models of the Earth’s ionosphere field-aligned currents: a review [PDF]

open access: yesE3S Web of Conferences, 2023
In this paper, we present a review of empirical models of the Earth’s ionosphere field-aligned currents (FAC). In total, seven FAC models were considered. Iijima and Potemra’s model was one of the earliest ones.
Zolotov Oleg   +2 more
doaj   +1 more source

COMPASS: A New COnductance Model Based on PFISR And SWARM Satellite Observations

open access: yesSpace Weather, 2022
Ionospheric conductance plays a crucial and active role in magnetosphere‐ionosphere‐thermosphere coupling processes. Despite its importance, direct global observations of conductance are unavailable.
Zihan Wang, Shasha Zou
doaj   +1 more source

Storm time field-aligned currents and magnetosphere-ionosphere coupling process

open access: yes地球与行星物理论评, 2022
Field aligned currents (FACs), also known as Birkland current, are flowing along the magnetic field line between the ionosphere and magnetosphere. They play an essential role in transferring mass, energy, and momentum from the magnetosphere to the ...
Hui Wang
doaj   +1 more source

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