Reference : Large amplitude parallel propagating electromagnetic oscillitons
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/33751
Large amplitude parallel propagating electromagnetic oscillitons
English
Cattaert, Tom [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Bioinformatique >]
Verheest, F. [> > > >]
2005
Physics of Plasmas
American Institute of Physics
12
1
7
Yes (verified by ORBi)
1070-664X
[en] ELECTROSTATIC SOLITONS ; DYNAMIC VIEWPOINT ; COMPLEX PLASMAS ; WAVES
[en] Earlier systematic nonlinear treatments of parallel propagating electromagnetic waves have been given within a fluid dynamic approach, in a frame where the nonlinear structures are stationary and various constraining first integrals can be obtained. This has lead to the concept of oscillitons that has found application in various space plasmas. The present paper differs in three main aspects from the previous studies: first, the invariants are derived in the plasma frame, as customary in the Sagdeev method, thus retaining in Maxwell's equations all possible effects. Second, a single differential equation is obtained for the parallel fluid velocity, in a form reminiscent of the Sagdeev integrals, hence allowing a fully nonlinear discussion of the oscilliton properties, at such amplitudes as the underlying Mach number restrictions allow. Third, the transition to weakly nonlinear whistler oscillitons is done in an analytical rather than a numerical fashion. (C) 2005 American Institute of Physics.
http://hdl.handle.net/2268/33751

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