Search Publications
Synthetic Empirical Chorus Wave Model From Combined Van Allen Probes and Cluster Statistics
Krasnoselskikh, V.; Hospodarsky, G.; Artemyev, A. V. +4 more
Chorus waves are among the most important natural electromagnetic emissions in the magnetosphere as regards to their potential effects on electron dynamics. They can efficiently accelerate or precipitate electrons trapped in the outer radiation belt, producing either fast increases of relativistic particle fluxes or auroras at high latitudes. Accu…
Global Model of Plasmaspheric Hiss From Multiple Satellite Observations
Meredith, Nigel P.; Horne, Richard B.; Li, Wen +4 more
We present a global model of plasmaspheric hiss, using data from eight satellites, extending the coverage and improving the statistics of existing models. We use geomagnetic activity dependent templates to separate plasmaspheric hiss from chorus. In the region 22-14 magnetic local time (MLT) the boundary between plasmaspheric hiss and chorus moves…
A Review of Alfvénic Turbulence in High-Speed Solar Wind Streams: Hints From Cometary Plasma Turbulence
Hellinger, Petr; Tsurutani, Bruce T.; Glassmeier, Karl-Heinz +3 more
Solar wind turbulence within high-speed streams is reviewed from the point of view of embedded single nonlinear Alfvén wave cycles, discontinuities, magnetic decreases (MDs), and shocks. For comparison and guidance, cometary plasma turbulence is also briefly reviewed. It is demonstrated that cometary nonlinear magnetosonic waves phase-steepen, wit…
MMS Examination of FTEs at the Earth's Subsolar Magnetopause
Russell, C. T.; Eastwood, J. P.; Nakamura, R. +9 more
Determining the magnetic field structure, electric currents, and plasma distributions within flux transfer event (FTE)-type flux ropes is critical to the understanding of their origin, evolution, and dynamics. Here the Magnetospheric Multiscale mission's high-resolution magnetic field and plasma measurements are used to identify FTEs in the vicini…
Magnetic Reconnection at a Thin Current Sheet Separating Two Interlaced Flux Tubes at the Earth's Magnetopause
Sauvaud, J. -A.; Russell, C. T.; Farrugia, C. J. +31 more
The occurrence of spatially and temporally variable reconnection at the Earth's magnetopause leads to the complex interaction of magnetic fields from the magnetosphere and magnetosheath. Flux transfer events (FTEs) constitute one such type of interaction. Their main characteristics are (1) an enhanced core magnetic field magnitude and (2) a bipola…
Formation of Dawn-Dusk Asymmetry in Earth's Magnetotail Thin Current Sheet: A Three-Dimensional Particle-In-Cell Simulation
Artemyev, A. V.; Pritchett, P. L.; Angelopoulos, V. +1 more
Using a three-dimensional particle-in-cell simulation, we investigate the formation of dawn-dusk asymmetry in Earth's magnetotail. The magnetotail current sheet is compressed by an external driving electric field down to a thickness on the order of ion kinetic scales. In the resultant thin current sheet (TCS) where the magnetic field line curvatur…
The Properties of Lion Roars and Electron Dynamics in Mirror Mode Waves Observed by the Magnetospheric MultiScale Mission
Russell, C. T.; Lavraud, B.; Anderson, B. J. +47 more
Mirror mode waves are ubiquitous in the Earth's magnetosheath, in particular behind the quasi-perpendicular shock. Embedded in these nonlinear structures, intense lion roars are often observed. Lion roars are characterized by whistler wave packets at a frequency ∼100 Hz, which are thought to be generated in the magnetic field minima. In this study…
Electromagnetic Electron Cyclotron Instability in the Solar Wind
Lazar, M.; Yoon, P. H.; López, R. A. +1 more
The abundant reports on the existence of electromagnetic high-frequency fluctuations in space plasmas have increased the expectations that theoretical modeling may help understand their origins and implications (e.g., kinetic instabilities and dissipation). This paper presents an extended quasi-linear approach of the electromagnetic electron cyclo…
Long-Lasting Poloidal ULF Waves Observed by Multiple Satellites and High-Latitude SuperDARN Radars
Shi, X.; Nishimura, Y.; Angelopoulos, V. +6 more
Poloidal ultralow frequency (ULF) waves between 5 and 10 mHz were observed by multiple satellites and three high-latitude Super Dual Auroral Radar Network radars during the recovery phase of a moderate geomagnetic storm on 24-27 January 2016. The long-lasting ULF waves were observed in the magnetic field and energetic particle flux perturbations d…
Large-Scale Survey of the Structure of the Dayside Magnetopause by MMS
Russell, C. T.; Lavraud, B.; Baumjohann, W. +13 more
This paper describes the generation and initial utilization of a database containing 80 vector and scalar quantities, for a total of 8,670 magnetopause and magnetosheath current sheet crossings by MMS1, using plasma and magnetic field data from the Fast Plasma Investigation, Fluxgate Magnetometer, and Hot Plasma Composition Analyzer instruments, a…