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Heating Diagnostics with MHD Waves

机译:MHD波的加热诊断

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摘要

The heating of the solar atmosphere is a fundamental problem of modern solar and astrophysics. A review of the seismological aspects of magnetohydrodynamic (MHD) waves with an emphasis on standing longitudinal waves in the context of coronal heating is presented. Efforts made recently may be split into two categories: forward modelling and data inversion. Forward modelling can be applied to predict the observational footprints of various heating scenarios. A new diagnostic method based on the analysis of Doppler shift time series is outlined with specific application to solar coronal conditions. The power of the method is demonstrated and tested using synthetic data and comparing them with actual high-resolution (e.g. SoHO/SUMER) observations. Further, related recent examples of standing longitudinal oscillations in coronal loop structures observed with the new Hinode/EIS instrument are also presented. These latter observations provide an advanced ground for MHD seismology as a tool for plasma heating diagnostics in the atmosphere of the Sun.
机译:太阳大气层的加热是现代太阳和天体物理学的基本问题。本文介绍了磁流体动力学(MHD)波的地震学方面的研究,重点是在日冕加热下的驻波纵波。最近所做的努力可以分为两类:正向建模和数据反演。可以将正向建模应用于预测各种加热方案的观测足迹。概述了一种基于多普勒频移时间序列分析的新诊断方法,并将其具体应用于太阳日冕条件。使用合成数据并将其与实际高分辨率(例如SoHO / SUMER)观测值进行比较,证明并测试了该方法的功能。此外,还介绍了使用新的Hinode / EIS仪器观察到的冠状环结构中站立的纵向振动的相关最新示例。后面的这些观察为MHD地震学作为太阳大气中等离子体加热诊断的工具提供了先进的基础。

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