Search Publications
Turbulent processes in Earth's magnetosheath by Cluster mission measurements
Lui, A. T. Y.; Kronberg, E. A.; Kozak, L. V. +1 more
Methods and approaches which can be used for the analysis of hydrodynamic and magnetohydrodynamic turbulent flows are chosen for this study. It is defined that the best methods for determination of turbulent process types are the methods of statistical physics. Within the statistical approach the fractal analysis (height of the maximum of probabil…
The evolution of geomagnetotail magnetic flux in isolated substorms
Dunlop, M.; Rong, Z. J.; Shen, C. +4 more
The magnetic field energy stored in geomagnetotail released during a substorm period, cause significant magnetic disturbance of the space environment. The quantitative relationship between the magnetic field energy and the level of substorm activity, however, is still unclear, although many studies have qualitatively revealed the correlation betwe…
The role of deviation of magnetic field direction on the beaming angle: Extending of beaming angle theory
Katoh, Yuto; Kalaee, Mohammad Javad
In the beaming angle theory, the magnetic field direction is assumed perpendicular to the normal boundary, and the prediction of this theory, from beaming angle is base on the Jones' formula. We investigate the effect of deviation the magnetic field direction respect to normal boundary direction. In this study, we present new conditions that under…
Hot flow anomaly remnant in the far geotail?
Fedorov, A.; Sauvaud, J. -A.; Luhmann, J. G. +6 more
A hot flow anomaly (HFA) like event was observed by the Solar TErrestrial RElations Observatory (STEREO) in the night side magnetosheath in the far tail in February-March 2007. The magnetic signature of the tangential discontinuity was visible, but the resolution of the plasma ion data is not sufficient for our analysis, so a method is given to id…
Modeling of the electromagnetic ion cyclotron wave generation in the H+-He+ plasma of the inner magnetosphere
Lubchich, Andris A.; Semenova, Nadezhda V.
Behaviors of the integrated wave gain of electromagnetic ion cyclotron (EMIC) waves in the H+-He+ plasma of the inner magnetosphere is investigated. The integrated wave gain is obtained by integration of a temporal local growth rate along a geomagnetic field line. The local growth rate is determined by the method of Kennel an…
IMF By-controlled field-aligned currents in the magnetotail during northward interplanetary magnetic field
Dunlop, M.; Liu, Z. X.; Shi, J. K. +1 more
The influence of the interplanetary magnetic field (IMF) By component on the field-aligned currents (FACs) in the plasma sheet boundary layer (PSBL) in the magnetotail during the northward IMF were investigated using the data from Cluster. There are 748 FACs cases selected to do analysis. We present that the IMF By component …
The importance of amplitude modulation in nonlinear interactions between electrons and large amplitude whistler waves
Li, W.; Tao, X.; Bortnik, J. +2 more
The effects of amplitude modulation on nonlinear interactions between a parallel propagating whistler wave and electrons in a dipole field are investigated in this work using a test particle code. Here we first use the test particle simulation to validate a previous single-wave nonlinear theory. Then we adopt a simple two-wave model to represent t…
Preliminary testing of global hybrid-Vlasov simulation: Magnetosheath and cusps under northward interplanetary magnetic field
Palmroth, M.; Pokhotelov, D.; von Alfthan, S. +3 more
Global magnetohydrodynamic (MHD) simulations have been successful in describing systems where the important spatial scales are larger than ion inertial length and the plasma has a well-defined temperature. The weakness of global one-fluid MHD simulations is their inability to model the multi-temperature, multi-component plasmas in the inner magnet…
Multiscale studies of the three-dimensional dayside X-line
Hasegawa, H.; Fuselier, S. A.; Burch, J. L. +4 more
We review recent experience from the Cluster, Double Star, and THEMIS missions for lessons that apply to the upcoming Magnetospheric Multiscale Mission (MMS) being developed for launch in 2014. On global scales, simulation and statistical studies lead to mean configurations of dayside reconnection, implying specific relative alignments of the infl…
The dynamics of the plasmasphere: Recent results
De Keyser, J.; Darrouzet, F.
The purpose of this paper is to review recent advances in the study of the Earth's plasmasphere. Most of these have been obtained with data from two missions launched in 2000, Cluster and IMAGE. Indeed, those missions have deeply modified our understanding of this region due to their specificity: Cluster is a 4-spacecraft mission and IMAGE a globa…