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عنوان
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The effects of twisted magnetic field on coronal loop oscillations and dissipation
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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Sun: corona – Sun: magnetic fields – Sun: oscillations.
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چکیده
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The standing magnetohydrodynamic (MHD) modes in a cylindrical incompressible magnetic flux tube modelled as a straight core surrounded by a magnetically twisted annulus, both embedded in a straight ambient external field, are considered. The dispersion relation for the MHD waves is derived and solved numerically to obtain the frequencies of both the kink (m = 1) and fluting (m = 2, 3) waves. Damping rates due to both viscous and resistive dissipations in the presence of the twisted magnetic field are derived and solved numerically for both the kink and fluting waves.
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پژوهشگران
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مرجان برین (نفر دوم)، کیومرث کرمی (نفر اول)
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