Search Publications
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…
Features of the interaction of interplanetary coronal mass ejections/magnetic clouds with the Earth's magnetosphere
Farrugia, C. J.; Erkaev, N. V.; Torbert, R. B. +4 more
The interaction of interplanetary coronal mass ejections (ICMEs) and magnetic clouds (MCs) with the Earth's magnetosphere exhibits various interesting features principally due to interplanetary parameters which change slowly and reach extreme values of long duration. These, in turn, allow us to explore the geomagnetic response to continued and ext…
The geo-effectiveness of interplanetary small-scale magnetic fluxropes
Moldwin, M. B.; Zhang, X. -Y.; Cartwright, M.
The geo-effectiveness of Interplanetary small-scale magnetic flux ropes (ISMFRs) are studied using multiple satellites (ACE, WIND, Geotail, Cluster, THEMIS, and geosynchronous spacecraft) and ground magnetometers. We identified 16 ISMFR events during 2007-2008 that had in situ observations of the near-Earth upstream solar wind in addition to obser…