Global Resonant MHD Waves in the Magnetosphere

Research output: Contribution to conferencePaperpeer-review

Abstract

A major shortcoming of theories of long-period magnetic pulsations is the separate treatment of the problems of wave excitation and resonant coupling. This could account for many substantial discrepancies between the waveguide/cavity theories and observations. A unified approach leading to a new type of field line resonance (FLR) excitation mechanism is presented. It is shown that in a steady state the direct coupling of the waveguide modes to the local field line oscillations provides a natural and a very efficient transport of energy from the magnetosheath flow to the shear Alfv´en waves even in the ideal MHD limit. Many well-known observational features are recovered.
Original languageEnglish
Pages177-180
Number of pages4
Publication statusPublished - 16 Sept 2002
Externally publishedYes
EventNATO Advanced Research Workshop: Turbulence, Waves, and Instabilities in the Solar Plasma - Budapest, Hungary
Duration: 16 Sept 200220 Sept 2002

Workshop

WorkshopNATO Advanced Research Workshop
Country/TerritoryHungary
CityBudapest
Period16 Sept 200220 Sept 2002

Keywords

  • Magnetosphere
  • MHD
  • Plasma Physics

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