Kelvin-Helmholtz instability in solar spicules
محل انتشار: مجله پژوهش فیزیک ایران، دوره: 16، شماره: 3
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 324
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شناسه ملی سند علمی:
JR_PSI-16-3_002
تاریخ نمایه سازی: 30 دی 1397
چکیده مقاله:
Magneto hydrodynamic waves, propagating along spicules, may become unstable and the expected instability is of Kelvin-Helmholtz type. Such instability can trigger the onset of wave turbulence leading to an effective plasma heating and particle acceleration. In present study, two-dimensional magneto hydrodynamic simulations performed on a Cartesian grid is presented in spicules with different densities, moving at various speeds depending on their environment. Simulations being applied in this study show the onset of Kelvin-Helmholtz type instability and transition to turbulent flow in spicules. Development of Kelvin-Helmholtz instability leads to momentum and energy transport, dissipation, and mixing of fluids. When magnetic fields are involved, field amplification is also possible to take place
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نویسندگان
h ebadi
Astrophysics Department, Physics Faculty, University of Tabriz, Tabriz, Iran . Research Institute for Astronomy and Astrophysics of Maragha, Maragha, Iran