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Scientific paper
Feb 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011phpl...18b2904s&link_type=abstract
Physics of Plasmas, Volume 18, Issue 2, pp. 022904-022904-6 (2011).
Other
Astrophysical Plasma, Plasma Alfven Waves, Plasma Fluctuations, Plasma Ion Acoustic Waves, Plasma Nonlinear Waves, Plasma Simulation, Plasma Turbulence, Solar Wind, Magnetohydrodynamic Waves, Self-Focussing, Channeling, And Filamentation In Plasmas, Nonlinear Phenomena: Waves, Wave Propagation, And Other Interactions, Two-Fluid And Multi-Fluid Plasmas, Solar Wind Plasma, Sources Of Solar Wind
Scientific paper
Numerical simulation of coupled equations of kinetic Alfvén wave (KAW) and ion acoustic wave is presented in the solar wind. The nonlinear dynamical equations satisfy the modified Zakharov system of equations by taking the nonadiabatic response of the background density. The ponderomotive nonlinearity is incorporated in the wave dynamics. The effect of Landau damping of KAW is taken into account. Localization of magnetic field intensity and the wavenumber spectra (perpendicular and parallel) of magnetic fluctuations are studied in solar plasmas around 1 a.u. Our results reveal the formation of damped localized structures and the steeper spectra that are in good agreement with the observations. These damped structures and steeper turbulent spectra can be responsible for plasma heating and particle acceleration in solar wind.
Kumar Sachin
Kumar Sanjay
Sharma Nidhi
Sharma R. P.
Singh Heisnam Dinachandra
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