Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism

Details Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11003220s&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A3, CiteID A03220

Physics

Plasma Physics

19

Space Plasma Physics: Solitons And Solitary Waves (4455), Space Plasma Physics: Nonlinear Phenomena (4400, 6944), Magnetospheric Physics: Mhd Waves And Instabilities (2149, 6050, 7836), Interplanetary Physics: Mhd Waves And Turbulence (2752, 6050, 7836)

Scientific paper

A fluid model of nonlinear electron and ion inertial waves in anisotropic plasmas is presented. The model has been verified for plasma beta (ratio of kinetic/magnetic pressures) in a range between 0.1 and 15. It is shown that warm plasmas support four types of nonlinear waves, which correspond to four linear modes, Alfvénic, magnetosonic, sound, and electron inertial waves. Each of these nonlinear modes has slow and fast versions. Modes slower than the sound speed have left-handed polarization for the transverse magnetic field, while the faster modes have right-handed polarization. It is shown by direct integration that the exponential growth rate of nonlinear modes is balanced by the ion and electron dispersion leading to solutions in the form of trains of solitons or cnoidal waves. By using a novel technique of phase portraits, it is shown how the dispersive properties of electron and ion inertial waves change at the transition between warm and hot plasmas (β ~ 1) and how trains of solitons (``mirror modes'') are produced in a hot, anisotropic plasma. The applicability of the model is illustrated by showing that the electric currents carried by nonlinear waves measured on Cluster spacecraft in the magnetosheath at β ~ 15 are well reproduced by currents derived from the theoretical model.

Affiliated with

Also associated with

No associations

Rating

Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear Alfvén, magnetosonic, sound, and electron inertial waves in fluid formalism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1219550