Journal article
Four-field model for dispersive field-line resonances : Effects of coupling between shear-Alfvén and slow modes
Geophysical research letters, Vol.26(21), pp.3281-3284
1999
DOI: 10.1029/1999GL003628
Abstract
A new theoretical model is proposed for dispersive field-line resonances in collisionless magnetospheric plasmas on the basis of reduced four-field equations. The model improves upon the predictive capabilities of earlier two-field models. In particular, due to the coupling of the shear-Alfvén mode to the slow mode in the four-field system, it is now possible to account for the observed low frequencies of field-line resonances. Furthermore, parallel electric fields can be large without requiring the field-aligned current density to be unrealistically large. Qualitative implications for recent FAST and ground-based observations are discussed.
Details
- Title: Subtitle
- Four-field model for dispersive field-line resonances : Effects of coupling between shear-Alfvén and slow modes
- Creators
- A Bhattacharjee - University of IowaC. A Kletzing - University of IowaZ. W MA - University of IowaC. S NG - University of IowaN. F Otani - University of IowaX Wang - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.26(21), pp.3281-3284
- DOI
- 10.1029/1999GL003628
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Publisher
- American Geophysical Union
- Language
- English
- Date published
- 1999
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199826502771
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