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- W2131517957 abstract "<i>Aims. <i/> We investigate impulsive excitation mechanisms of the first harmonic fast magnetoacoustic kink mode of vertical oscillations in a solar coronal loop, which is approximated by either a straight slab or a curved arcade slab. <i>Methods. <i/> We solve numerically the full set of nonlinear ideal two-dimensional magnetohydrodynamic equations and analyze temporal and spatial wave signatures to infer characteristic features, such as waveperiods and node positions. <i>Results. <i/> We show that an initial velocity pulse located off-center excites the first harmonic and fundamental modes, which result in a movement of the node around the loop apex. These results are verified by the analytical findings for an elastic string. <i>Conclusions. <i/> Since the fundamental mode acquires more energy than its first harmonic, this explains why the latter is so rarely detected within a coronal loop." @default.
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- W2131517957 date "2009-03-11" @default.
- W2131517957 modified "2023-09-23" @default.
- W2131517957 title "Numerical simulations of the first harmonic kink mode of vertical oscillations of a solar coronal loop" @default.
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- W2131517957 doi "https://doi.org/10.1051/0004-6361/200811025" @default.
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