Open AccessMutual nonlinear interaction between two kinetic Alfven waves and its effect on filamentation: Applications to solar wind and coronal heating
Author(s) -
Shukla Anita,
Sharma R. P.
Publication year - 2002
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2001ja009135
Subject(s) - physics , nonlinear system , filamentation , solar wind , mechanics , ponderomotive force , plasma , turbulence , computational physics , kinetic energy , classical mechanics , quantum mechanics
This paper presents the model equations governing the mutual nonlinear interaction between two small but finite amplitude kinetic Alfven waves using two fluid models when the β of the plasma is less than unity (for high‐β cases one has to use the Boltzmann equation). The source of nonlinearity is the nonlinear electron heating and ponderomotive force‐driven nonlinear modification in the background density. The solutions of these model equations have been obtained by using analytical and numerical methods to study the effect of their mutual interaction on filament (hot spot) formation. It is concluded that the threshold field required for filament formation and their critical size is significantly affected by the mutual nonlinear interaction. Its effect on solar wind turbulence and coronal heating is also pointed out.