Determining the boundaries of the auroral oval from CHAMP field-aligned current signatures – Part 1
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In this paper, the first statistical study on auroral oval boundaries derived from small and medium-scale field-aligned currents (FACs) was presented, and the results were used for the first time.Abstract:
. In this paper we present the first statistical study on auroral oval boundaries derived from small- and medium-scale field-aligned currents (FACs,read more
Citations
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The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity
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Global features of the disturbance winds during storm time deduced from CHAMP observations
TL;DR: In this article, the authors used the CHAMP zonal wind observations from 2001 to 2005 to investigate the global features of the disturbance winds during magnetically disturbed periods, and they showed that the disturbance zonal winds are mainly westward, which increases with magnetic activity and latitude.
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Ionospheric Plasma Irregularities Characterized by the Swarm Satellites: Statistics at High Latitudes
Yaqi Jin,Andres Spicher,Chao Xiong,Lasse Boy Novock Clausen,Guram Kervalishvili,Claudia Stolle,Wojciech Jacek Miloch +6 more
TL;DR: In this paper, the in situ electron density obtained with the Langmuir probe and the total electron content from onboard global positioning system receiver are used to detect ionospheric plasma irregularities, and the irregularity parameters from the electron density in terms of the rate of change of density index and electron density gradients.
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Near-Earth Magnetic Field Effects of Large-Scale Magnetospheric Currents
TL;DR: In this article, a proper representation of the magnetospheric ring current effect is presented, which may help to properly quantify the magnetic contribution from the tail current for geomagnetic field modelling.
References
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Probability distributions of electron precipitation at high magnetic latitudes
TL;DR: In this paper, the authors integrated more than 600 million energetic electron spectra measured by the Special Sensor for Precipitating Particles, version 4 (SSJ4) sensor on nine Defense Meteorological Satellite Program (DMSP) spacecraft to obtain total number fluxes (Jtot [#/cm2 s sr]) and energy fluxes(JEtot[keV/cm 2 s sr]).
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A high-resolution model of field-aligned currents through empirical orthogonal functions analysis (MFACE)
TL;DR: In this paper, 10 years of CHAMP magnetic field measurements are integrated into MFACE, a model of field-aligned currents (FACs) using empirical orthogonal functions (EOFs), which gives the basic Region-1/Region-2 pattern varying mainly with the interplanetary magnetic field Bz component.
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Size of the auroral oval: UV ovals and precipitation boundaries compared
TL;DR: In this paper, the poleward boundary of the particle oval is often at ≥ 2° higher latitudes than the most intense UV luminosity, and large differences are typical especially in the midnight and morning sectors.
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Statistical study of the subauroral polarization stream: Its dependence on the cross-polar cap potential and subauroral conductance
TL;DR: In this paper, the effects of the cross-polar cap potential (CPCP) and the subauroral flux tube-integrated conductivity (that is, whether or not the northern and/or southern ionospheric footprint of the flux tube is sunlit or not) on the SAPS spatial distribution were investigated.
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Polar Ultraviolet Imager observations of global auroral power as a function of polar cap size and magnetotail stretching
TL;DR: In this article, it was shown that both polar cap flux, Φc, and the magnetotail stretching index, b2i, do correlate well with 40-min averages of nightside auroral power observed by UVI.