Analytical theory of the shear Alfvén continuum in the presence of a magnetic island
نویسندگان
چکیده
The effect of a magnetic island chain on the shear Alfvén continuum is calculated analytically. Using a WKB approximation of the linearized ideal MHD equations, the island is shown to cause an upshift in the continuum accumulation point frequency. This minimum of the frequency spectrum is shifted from the rational surface to the island separatrix. The structure of the eigenmodes is also presented.
منابع مشابه
Shear Alfvén wave continuous spectrum within magnetic islands
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