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首页> 外文期刊>The Astrophysical Journal. Letters >Determination of transverse density structuring from propagating magnetohydrodynamic waves in the solar atmosphere
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Determination of transverse density structuring from propagating magnetohydrodynamic waves in the solar atmosphere

机译:由太阳大气中传播的磁流体动力波确定横向密度结构

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摘要

We present a Bayesian seismology inversion technique for propagating magnetohydrodynamic transverse waves observed in coronal waveguides. The technique uses theoretical predictions for the spatial damping of propagating kink waves in transversely inhomogeneous coronal waveguides. It combines wave amplitude damping length scales along the waveguide with theoretical results for resonantly damped propagating kink waves to infer the plasma density variation across the oscillating structures. Provided that the spatial dependence of the velocity amplitude along the propagation direction is measured and the existence of two different damping regimes is identified, the technique would enable us to fully constrain the transverse density structuring, providing estimates for the density contrast and its transverse inhomogeneity length scale.
机译:我们提出了一种用于传播在冠状波导中观察到的磁流体动力学横波的贝叶斯地震学反演技术。该技术使用理论预测来预测横向非均匀冠状波导中传播的扭结波的空间衰减。它结合了沿波导的波幅衰减长度尺度和共振衰减传播的扭结波的理论结果,以推断整个振荡结构的等离子体密度变化。假设测量了沿传播方向的速度振幅的空间依赖性,并且确定了两种不同的阻尼机制,则该技术将使我们能够完全约束横向密度结构,从而提供密度对比及其横向不均匀长度的估计值规模。

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