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 language | English |
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Pages | 177-180 |
Number of pages | 4 |
Publication status | Published - 16 Sept 2002 |
Externally published | Yes |
Event | NATO Advanced Research Workshop: Turbulence, Waves, and Instabilities in the Solar Plasma - Budapest, Hungary Duration: 16 Sept 2002 → 20 Sept 2002 |
Workshop
Workshop | NATO Advanced Research Workshop |
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Country/Territory | Hungary |
City | Budapest |
Period | 16 Sept 2002 → 20 Sept 2002 |
Keywords
- Magnetosphere
- MHD
- Plasma Physics