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Waves in Solar Coronal Loops

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TLDR
In this paper, the authors present recent progress in the observational study of four types of wave (or oscillation) phenomena mainly occurring in active region coronal loops, including (i) flare-induced slow mode oscillations, (ii) fast kink mode oscillation, (iii) propagating slow magnetoacoustic waves, and (iv) ubiquitous propagating kink (Alfvenic) waves.
Abstract
Recent observations have revealed the ubiquitous presence of magnetohydrodynamic (MHD) waves and oscillations in the solar corona. The aim of this review is to present recent progress in the observational study of four types of wave (or oscillation) phenomena mainly occurring in active region coronal loops, including (i) flare-induced slow mode oscillations, (ii) fast kink mode oscillations, (iii) propagating slow magnetoacoustic waves, and (iv) ubiquitous propagating kink (Alfvenic) waves. This review not only comprehensively outlines various aspects of these waves and coronal seismology, but also highlights the topics that are newly emerging or hotly debated, thus can provide readers a useful guidance on further studies of their interested topics.

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Citations
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Alfven Waves in the Solar Corona

TL;DR: An estimate of the energy carried by the waves that are spatially resolved indicates that they are too weak to heat the solar corona; however, unresolved Alfvén waves may carry sufficient energy.

Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation

TL;DR: In this paper, the authors report the evolution of magnetic field and its energy in NOAA active region 11158 over 5 days based on a vector magnetogram series from the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamic Observatory (SDO).
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Achievements of Hinode in the first eleven years

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Coronal Plasma Motions near Footpoints of Active Region Loops Revealed from Spectroscopic Observations with {it Hinode} EIS

TL;DR: In this article, the Hinode EUV Imaging Spectrometer was used to observe the solar active region 10938 from the disk center to the west limb with a single Gaussian approximation for the emission line profiles.

Full Sun Observations for Identifying the Source of the Slow Solar Wind.

TL;DR: This map provides a full-Sun observation that combines three key ingredients for identifying the sources: velocity, plasma composition and magnetic topology and shows them as solar wind composition plasma outflowing on open magnetic field lines.
References
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Journal ArticleDOI

TRACE observation of damped coronal loop oscillations: implications for coronal heating

TL;DR: The imaging telescope on board the Transition Region and Coronal Explorer spacecraft observed the decaying transversal oscillations of a long and thin coronal loop in the 171 angstrom Fe(IX) emission line, finding the coronal dissipation coefficient to be eight to nine orders of magnitude larger than the theoretically predicted classical value.
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Coronal Loop Oscillations Observed with the Transition Region and Coronal Explorer

TL;DR: In this article, spatial oscillations of coronal loops were detected in extreme-ultraviolet wavelengths (171 with the T ransition Region and Coronal Explorer, in the tem- Ae ) perature range of MK.
Journal ArticleDOI

On Solving the Coronal Heating Problem

TL;DR: The question of what heats the solar corona remains one of the most important problems in astrophysics as mentioned in this paper, and finding a definitive solution involves a number of challenging steps, beginning with an identification of the energy source and ending with a prediction of observable quantities that can be compared directly with actual observations.
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Wave propagation in a magnetic cylinder

TL;DR: In this article, the authors investigated the nature of oscillations in a magnetic cylinder embedded in magnetic environment and showed that the standard slender flux tube analysis of a kink mode in a cylinder excludes the possibility of a second mode, which arises under photospheric conditions.
Journal ArticleDOI

Mass and Energy Flow in the Solar Chromosphere and Corona

TL;DR: In this paper, the authors review some investigations into the mass and energy flow in the solar chromosphere and corona; the objective of these investigations is the development of a physical model that will not only account for the physical conditions in the outer atmosphere of the sun, but can also be applied to the study of the outer atmospheres of other stars.
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