HR: 1340h
AN: SM23A-0490    [Abstracts]
TI: Effects of field-aligned inhomogeneity on plasma wave coupling: Numerical simulations
AU: * Pyo, Y
EM: yspyo@rrl.go.kr
AF: Radio Research Laboratory, Seolseong, Ichon, Kyunggi, 467882 Korea, Republic of
AU: * Pyo, Y
EM: yspyo@rrl.go.kr
AF: Department of Astronomy and Space Science, Kyung Hee University, Yongin, Kyunggi, 449701 Korea, Republic of
AU: Kim, E
EM: ehkim@khu.ac.kr
AF: Department of Astronomy and Space Science, Kyung Hee University, Yongin, Kyunggi, 449701 Korea, Republic of
AU: Kim, K
EM: kskim@spacelab.khu.ac.kr
AF: Department of Astronomy and Space Science, Kyung Hee University, Yongin, Kyunggi, 449701 Korea, Republic of
AU: Lee, D
EM: dhlee@khu.ac.kr
AF: Department of Astronomy and Space Science, Kyung Hee University, Yongin, Kyunggi, 449701 Korea, Republic of
AB: Propagation of electromagnetic waves is studied in a magnetized plasma where the inhomogeneity parallel to the ambient magnetic field becomes important. In an inhomogeneous plasma, the plasma waves become complicated owing to the existence of local cutoff, coupling, and resonances. When the nonuniformity lies perpendicular to the magnetic field, it is well known that O- and X-waves are mode-converted to the electrostatic upper hybrid resonances. When the nonuniformity lies along the magnetic field line, R and L waves become also complicated since the wave equations become coupled. We numerically study the R and L wave coupling in a 3-D multi-fluid model. Characteristics of R and L waves are investigated in irregular density profiles. The finite difference method is used in both time and space for computational simulations. We discuss how each mode behaves near the singular locations by analyzing time histories of each component and compare our investigation to an earlier work.
DE: 2471 Plasma waves and instabilities
DE: 2487 Wave propagation (6934)
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting