Nonlinear density excitations in a magnetorotating relativistic plasma with warm ions and non-Maxwellian electrons
- National Centre for Physics, Shahdara Valley Road, Islamabad (Pakistan)
Linear and nonlinear electrostatic ion acoustic waves in a weakly relativistic magnetorotating plasma in the presence of non-Maxwellian electrons and warm ions have been examined. The system under consideration has yielded two solutions, namely, the fast and slow acoustic modes which have been observed to depend on the streaming velocity, ion to electron temperature ratio, and the nonthermality parameter of the non-Maxwellian electrons. Using the multiple time scale analysis, we have derived the three dimensional nonlinear Zakharov–Kuznetsov equation and also presented its solution. Both compressive and rarefactive solitary structures have been found in consonance with the satellite observations. It has been observed that although the linear dispersion relation gives both fast and slow ion acoustic waves, the solitary structures form only for the fast acoustic mode. The dependence of the characteristics of the solitary structures on several plasma parameters has also been explored. The present investigation may be beneficial to understanding the rotating plasma environments such as those found in the planetary magnetospheres of Saturn and Jupiter.
- OSTI ID:
- 22600174
- Journal Information:
- Physics of Plasmas, Vol. 23, Issue 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DISPERSION RELATIONS
ELECTRON TEMPERATURE
ELECTRONS
EXCITATION
ION ACOUSTIC WAVES
IONS
JUPITER PLANET
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLANETARY MAGNETOSPHERES
PLASMA DENSITY
RELATIVISTIC PLASMA
RELATIVISTIC RANGE
ROTATING PLASMA
SATELLITES
SATURN PLANET
THREE-DIMENSIONAL CALCULATIONS
THREE-DIMENSIONAL LATTICES