Aims. We study the generation of transversal oscillations in coronal loops represented as a straight thin flux tube under the effect of an external driver modelling the global coronal EIT wave. We investigate how the generated oscillations depend on the nature of the driver, and the type of interaction between the two systems. udMethods. We consider the oscillations of a magnetic straight cylinder with fixed-ends under the influence of an external driver modelling the force due to the global EIT wave. Given the uncertainties related to the nature of EIT waves, we first approximate the driver by an oscillatory force in time and later by a shock with a finite width. udResults. Results show that for a harmonic driver the dominant period in the generated oscillation belongs to the driver. Depending on the period of driver, compared to the natural periods of the loop, a mixture of standing modes harmonics can be initiated. In the case of a non-harmonic driver (modelling a shock wave), the generated oscillations in the loop are the natural periods only. The amplitude of oscillations is determined by the position of the driver along the tube. The full diagnosis of generated oscillations is achieved using simple numerical methods.ud
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机译：目的我们研究了在模拟整体日冕EIT波的外部驱动器的影响下，在表示为直薄通量管的日冕环中产生横向振荡的过程。我们研究产生的振荡如何取决于驱动器的性质以及两个系统之间的交互类型。 udMethods。我们考虑在外部驱动器的影响下，固定端的磁性直圆柱体的振动，该外部驱动器模拟了由于整体EIT波引起的力。考虑到与EIT波的性质有关的不确定性，我们首先通过及时的振荡力近似驱动器，然后通过有限宽度的冲击近似驱动器。 ud结果。结果表明，对于谐波驱动器，所产生振荡中的主导周期属于该驱动器。取决于驱动器的周期，与环路的自然周期相比，可以启动混合模式的谐波。对于非谐波驱动器（模拟冲击波），回路中产生的振荡仅是自然周期。振荡幅度由驱动器沿管的位置确定。使用简单的数值方法可以完全诊断产生的振荡。 ud
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