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Title:
Heating Diagnostics with MHD Waves
Authors:
Taroyan, Y.; Erdélyi, R.
Affiliation:
AA(Solar Physics & Space Plasma Research Centre (SP^2RC), Department of Applied Mathematics, University of Sheffield), AB(Solar Physics & Space Plasma Research Centre (SP^2RC), Department of Applied Mathematics, University of Sheffield)
Publication:
Space Science Reviews, Volume 149, Issue 1-4, pp. 229-254 (SSRv Homepage)
Publication Date:
12/2009
Origin:
SPRINGER
Keywords:
MHD waves, Coronal heating, Forward modelling
DOI:
10.1007/s11214-009-9506-9
Bibliographic Code:
2009SSRv..149..229T

Abstract

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.
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