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arXiv 1701.04594astro-ph.SR
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轴对称太阳磁通量管中扭转阿尔芬波的数值模拟

Numerical Simulations of Torsional Alfvén Waves in Axisymmetric Solar Magnetic Flux Tubes

D. Wójcik, K. Murawski, Z. E. Musielak, P. Konkol, A. Mignone

摘要:

我们数值研究了阿尔文波沿轴对称和非等温太阳通量管嵌入太阳大气中传播。管磁场是无电流的,并且随高度发散,并且波由沿着管磁场线的周期性驱动器激发。主要结果是,两个波变量,速度和磁场扰动的方位角方向,表现不同的结果沿管的物理参数的梯度。为了解释这些差异的波的行为,时间演化的波变量和由此产生的截止周期为每个波变量的计算,并用于确定在太阳色球层中的区域,强烈的波反射可能发生。

英文摘要:

We investigate numerically Alfvén waves propagating along an axisymmetric and non-isothermal solar flux tube embedded in the solar atmosphere. The tube magnetic field is current-free and diverges with height, and the waves are excited by a periodic driver along the tube magnetic field lines. The main results are that the two wave variables, the velocity and magnetic field perturbations in the azimuthal direction, behave differently as a result of gradients of physical parameters along the tube. To explain these differences in the wave behavior, the time evolution of the wave variables and the resulting cutoff period for each wave variable are calculated, and used to determine regions in the solar chromosphere where strong wave reflection may occur.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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