Results 1 to 10 of about 22,189 (98)

Dissipation of field-aligned currents in the topside ionosphere [PDF]

Scientific Reports, 2022
Field-aligned currents (FACs) are electric currents parallel to the geomagnetic field and connecting the Earth’s magnetosphere to the high-latitude ionosphere.
Fabio Giannattasio, Giuseppe Consolini, Igino Coco, Paola De Michelis, Michael Pezzopane, Alessio Pignalberi, Roberta Tozzi   +6 more
doaj   +2 more sources

Transient, small‐scale field‐aligned currents in the plasma sheet boundary layer during storm time substorms [PDF]

Geophysical Research Letters, 2016
We report on field‐aligned current observations by the four Magnetospheric Multiscale (MMS) spacecraft near the plasma sheet boundary layer (PSBL) during two major substorms on 23 June 2015.
R. Nakamura, V. A. Sergeev, W. Baumjohann, F. Plaschke, W. Magnes, D. Fischer, A. Varsani, D. Schmid, T. K. M. Nakamura, C. T. Russell, R. J. Strangeway, H. K. Leinweber, G. Le, K. R. Bromund, C. J. Pollock, B. L. Giles, J. C. Dorelli, D. J. Gershman, W. Paterson, L. A. Avanov, S. A. Fuselier, K. Genestreti, J. L. Burch, R. B. Torbert, M. Chutter, M. R. Argall, B. J. Anderson, P.‐A. Lindqvist, G. T. Marklund, Y. V. Khotyaintsev, B. H. Mauk, I. J. Cohen, D. N. Baker, A. N. Jaynes, R. E. Ergun, H. J. Singer, J. A Slavin, E. L. Kepko, T. E. Moore, B. Lavraud, V. Coffey, Y. Saito   +41 more
doaj   +2 more sources

Online system for analyzing currents in the upper ionosphere according to Swarm satellite data

Solar-Terrestrial Physics, 2023
In this paper, we describe the TeslaSwarm online system [http://aleph.gcras.ru/teslaswarm] for visualizing field-aligned currents in the upper ionosphere, using data from Swarm low-orbit satellites.
Belov I. O., Soloviev A. A., Pilipenko V. A., Dobrovolskiy M. N., Bogoutdinov S. R., Kalinkin K. D.   +5 more
doaj   +1 more source

Statistical Analysis of Bifurcating Region 2 Field-Aligned Currents Using AMPERE

Frontiers in Astronomy and Space Sciences, 2022
We present a statistical analysis of the occurrence of bifurcations of the Region 2 (R2) Field-Aligned Current (FAC) region, observed by the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE).
H. K. Sangha , S. E. Milan , S. E. Milan , B. J. Anderson , H. Korth    +4 more
doaj   +1 more source

Sign-Singularity Analysis of Field-Aligned Currents in the Ionosphere

Atmosphere, 2021
Field-aligned currents (FACs) flowing in the auroral ionosphere are a complex system of upward and downward currents, which play a fundamental role in the magnetosphere–ionosphere coupling and in the ionospheric heating.
Giuseppe Consolini, Paola De Michelis, Igino Coco, Tommaso Alberti, Maria Federica Marcucci, Fabio Giannattasio, Roberta Tozzi   +6 more
doaj   +1 more source

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

Geophysical 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, E. E. Antonova, M. V. Stepanova   +2 more
doaj   +1 more source

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

Frontiers 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, Delores J. Knipp, Lutz Rastätter, Gang Lu, Dogacan Su Ozturk, James A. Slavin, Astrid Maute, Jeffrey Klenzing, Shasha Zou, Jared R. Espley, Michael Purucker, Mojtaba Akhavan-Tafti, Gang Kai Poh, Gang Kai Poh, Zihan Wang   +14 more
doaj   +1 more source

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

Annales 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, E. Leer, H. L. Pécseli, J. K. Trulsen   +3 more
doaj   +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]

Annales 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]

E3S 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, Prokhorov Boris, Romanovskaya Yulia   +2 more
doaj   +1 more source