Projects per year
Abstract
We consider the use of propagating kink waves, such as those observed by the Coronal Multi-channel Polarimeter, as a diagnostic technique. The transverse structuring of the plasma may be inferred by the frequency-dependent wave damping, which is attributed to resonant absorption. We include the effect of reflection of waves at the loop footpoints, which leads to the asymmetry parameter, describing the ratio of driven wave power at the footpoints becoming weakly constrained. The classical model of resonant absorption based on an exponential damping profile significantly overestimates the damping rate in coronal loops with low density contrast ratios. The use of the exponential profile in an analysis of observations therefore leads to underestimates for the density contrast ratio and associated parameters such as the heating rate following phase mixing.
Original language | English |
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Article number | 101 |
Number of pages | 10 |
Journal | Astrophysical Journal |
Volume | 929 |
Issue number | 1 |
Early online date | 18 Apr 2022 |
DOIs | |
Publication status | Published - 18 Apr 2022 |
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Dive into the research topics of 'Coronal seismology using damping of propagating kink waves'. Together they form a unique fingerprint.-
Solar and Magnetospheric Plasmas: Solar and Magnetospheric Plasmas: Theory and Application
Neukirch, T. (PI), Archontis, V. (CoI), De Moortel, I. (CoI), Hood, A. W. (CoI), Mackay, D. H. (CoI), Parnell, C. E. (CoI) & Wright, A. N. (CoI)
Science & Technology Facilities Council
1/04/22 → 31/03/25
Project: Standard
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Solar and Magnetospheric: Solar and Magnetospheric Magnetohydrodynamics and Plasmas: Theory and Application
Hood, A. W. (PI), Archontis, V. (CoI), De Moortel, I. (CoI), Mackay, D. H. (CoI), Neukirch, T. (CoI), Parnell, C. E. (CoI) & Wright, A. N. (CoI)
Science & Technology Facilities Council
1/04/19 → 31/03/22
Project: Standard
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H2020 ERC Consolidator - CORONALDOLLS: CORONALDOLLS
De Moortel, I. (PI)
1/10/15 → 30/09/20
Project: Standard
Datasets
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Coronal seismology using damping of propagating kink waves (code)
Pascoe, D. J. (Creator), GitHub, 2022
https://github.com/djpascoe/kinkLUT
Dataset: Software