Computer Science – Sound
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm34a..05k&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SM34A-05
Computer Science
Sound
2431 Ionosphere/Magnetosphere Interactions (2736), 2451 Particle Acceleration, 2704 Auroral Phenomena (2407)
Scientific paper
Alfvén waves are one of the key mechanisms through whcih changes in magnetic or electric fields are communicated throughout the magnetospheric system. Of particular interest is the role these waves play in coupling the magnetosphere tio the auroral ionosphere. A brief review of work on this coupling processs from the foundations laid in the 1970's and key results along the way leading to current work is presetned. Recent work to explain dispersive electron events observed simultaneously with quasi-static inverted-V electrons is discussed which shows that Alfvén waves can explain these dynamic features observed by multiple sounding rocket experiments. Systematic variation of the various parameter that affect the acceleration of electrons by Alfvén waves shows that the precise signature of this acceleration process can change, but that the overall mechanism is quite robust, suggesting that Alfvén wave acceleration of electronss plays a central role in magnetosphere-ionosphere coupling.
Chen Leon L.
Kletzing Craig A.
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