scholarly journals Role of finite ionospheric conductivity on toroidal field line oscillations in the Earth's magnetosphere-Analytic solutions

2016 ◽  
Vol 121 (6) ◽  
pp. 5404-5421 ◽  
Author(s):  
Jayashree Bulusu ◽  
A. K. Sinha ◽  
Geeta Vichare
Keyword(s):  
Field Line ◽  
Analytic Solutions ◽  
Toroidal Field ◽  
Ionospheric Conductivity ◽  
Earth’S Magnetosphere ◽  
Earth's Magnetosphere

scholarly journals Magnetized Kelvin–Helmholtz instability: theory and simulations in the Earth’s magnetosphere context

2017 ◽  
Vol 83 (6) ◽  
Author(s):  
Matteo Faganello ◽  
Francesco Califano
Keyword(s):  
Three Dimensional ◽  
Solar Wind Plasma ◽  
Helmholtz Instability ◽  
Earth’S Magnetosphere ◽  
Instability Theory ◽  
Earth's Magnetosphere ◽  
Long Time ◽  
Weak Points ◽  
The Rich

The Kelvin–Helmholtz instability, proposed a long time ago for its role in and impact on the transport properties at magnetospheric flanks, has been widely investigated in the Earth’s magnetosphere context. This review covers more than fifty years of theoretical and numerical efforts in investigating the evolution of Kelvin–Helmholtz vortices and how the rich nonlinear dynamics they drive allow solar wind plasma bubbles to enter into the magnetosphere. Special care is devoted to pointing out the main advantages and weak points of the different plasma models that can be adopted for describing the collisionless magnetospheric medium and in underlying the important role of the three-dimensional geometry of the system.

scholarly journals Dawn–dusk asymmetries in the coupled solar wind–magnetosphere–ionosphere system: a review

2014 ◽  
Vol 32 (7) ◽  
pp. 705-737 ◽  
Author(s):  
A. P. Walsh ◽  
S. Haaland ◽  
C. Forsyth ◽  
A. M. Keesee ◽  
J. Kissinger ◽  
...  
Keyword(s):  
Solar Wind ◽  
Present Knowledge ◽  
Earth’S Magnetosphere ◽  
External Influences ◽  
System A ◽  
And Topology ◽  
Earth's Magnetosphere ◽  
Key Aspects

Abstract. Dawn–dusk asymmetries are ubiquitous features of the coupled solar-wind–magnetosphere–ionosphere system. During the last decades, increasing availability of satellite and ground-based measurements has made it possible to study these phenomena in more detail. Numerous publications have documented the existence of persistent asymmetries in processes, properties and topology of plasma structures in various regions of geospace. In this paper, we present a review of our present knowledge of some of the most pronounced dawn–dusk asymmetries. We focus on four key aspects: (1) the role of external influences such as the solar wind and its interaction with the Earth's magnetosphere; (2) properties of the magnetosphere itself; (3) the role of the ionosphere and (4) feedback and coupling between regions. We have also identified potential inconsistencies and gaps in our understanding of dawn–dusk asymmetries in the Earth's magnetosphere and ionosphere.

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