Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm41b0564w&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SM41B-0564
Physics
2704 Auroral Phenomena (2407), 2716 Energetic Particles, Precipitating, 2736 Magnetosphere/Ionosphere Interactions, 2772 Plasma Waves And Instabilities
Scientific paper
Standing and travelling shear Alfvén waves contribute to electron acceleration and parallel electric field formation on auroral field lines in Earth's magnetosphere. We model the shear Alfvén waves in one dimension and use a self-consistent kinetic simulation code to study the parallel electron dynamics in the presence of shear Alfvén waves in the inertial regime. We study both travelling shear Alfvén wave pulses as well as standing shear Alfvén waves which represent field line resonances. We compare results from simulation runs with uniform and non-uniform magnetic fields in order to demonstrate the effect of including the magnetic mirror force term. We also show results from simulation runs with non-uniform density profiles, to investigate the effect of varying the Alfvén speed and electron inertial length along the field line.
Marchand Régine
Rankin Robert
Watt C. E.
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