HR: 1340h
AN: NG43A-0567    [Abstracts]
TI: Nonlinear Alfven Waves in Relativistic Pair Plasma: Dispersion Relation
AU: * Hada, T
EM: hada@esst.kyushu-u.ac.jp
AF: ESST, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580 Japan
AU: Matsukiyo, S
EM: matsukiy@esst.kyushu-u.ac.jp
AF: ESST, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580 Japan
AU: Munoz, V
EM: munoz@esst.kyushu-u.ac.jp
AF: ESST, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580 Japan
AU: Ikeda, M
EM: ikeda@esst.kyushu-u.ac.jp
AF: ESST, Kyushu University, 6-1 Kasuga Koen, Kasuga, 816-8580 Japan
AB: In a strongly relativistic environment such as the pulsar magnetosphere, the plasma is believed to be composed of electrons and positrons. It is of fundamental importance to study properties of Alfven waves in such a pair plasma, since the Alfven waves are one of the main carriers of the momentum and energy, and also since they play essential roles in diffusion and acceleration of energetic particles. We have reported earlier that the dispersion relation of a finite amplitude, parallel propagating, circularly polarized Alfven waves in a relativistic pair plasma can be derived exactly within the framework of fluid equations, and that the obtained dispersion relation exhibits several characteristic features which do not appear if the plasma is non-relativistic and/or the wave amplitude is small. Recently we have extended the analysis in several different directions including the dispersion relation for quasi-parallel propagating waves, phase steepened waves and consequences, parametric decay instabilities, among others. In the presentation, we will discuss them in detail so that they can provide theoretical background for understanding numerical simulation results.
DE: 4455 Nonlinear waves, shock waves, solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, DE: 4490 Turbulence (3379, 4568, 7863)
DE: 7836 MHD waves and instabilities (2149, 2752, 6050)
DE: 7839 Nonlinear phenomena (4400, 6944)
SC: Nonlinear Geophysics [NG]
MN: Fall Meeting 2005