Feedback instability in the magnetosphere-ionosphere coupling system: Revisited | Zendy

T. Watanabe | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Feedback instability in the magnetosphere-ionosphere coupling system: Revisited

Author(s) -

T. Watanabe

Publication year - 2010

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.3304237

Subject(s) - physics , instability , magnetosphere , dispersion relation , ionosphere , magnetohydrodynamics , coupling (piping) , alfvén wave , classical mechanics , magnetohydrodynamic turbulence , quantum electrodynamics , geophysics , computational physics , plasma , mechanics , condensed matter physics , quantum mechanics , mechanical engineering , engineering

A coupled set of the reduced magnetohydrodynamic and the two-fluid equations is applied to themagnetosphere-ionosphere (M-I) feedback interactions in relation to growth of quite auroral arcs. A theoretical analysis revisiting the linear feedback instability reveals asymptotic behaviors of the dispersion relation and a non-Hermite property in the M-I coupling. A nonlinear simulation of the feedback instability in the M-I coupling system manifests growth of the Kelvin?Helmholtz-like mode in the magnetosphere as the secondary instability. The distorted vortex and field-aligned current profiles propagating as the shear Alfv?n waves lead to spontaneous deformation of ionospheric density and current structures associated with auroral arcs

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research