The Library
The dynamics and observability of circularly polarized kink waves
Tools
Tools
Tools
Magyar, N., Duckenfield, T., Van Doorsselaere, T. and Nakariakov, V. M. (2022) The dynamics and observability of circularly polarized kink waves. Astronomy & Astrophysics, 659 . A73. doi:10.1051/0004-6361/202141945 ISSN 0004-6361.
|
PDF
WRAP-dynamics-observability-circularly-polarized-kink-waves-Nakariakov-2022.pdf - Published Version - Requires a PDF viewer. Download (966Kb) | Preview |
Official URL: http://dx.doi.org/10.1051/0004-6361/202141945
Abstract
Context. Kink waves are routinely observed in coronal loops. Resonant absorption is a well-accepted mechanism that extracts energy from kink waves. Nonlinear kink waves are know to be affected by the Kelvin-Helmholtz instability. However, all previous numerical studies consider linearly polarized kink waves.
Aims. We study the properties of circularly polarized kink waves on straight plasma cylinders, for both standing and propagating waves, and we compare them to the properties of linearly polarized kink waves.
Methods. We used the code MPI-AMRVAC to solve the full 3D magnetohydrodynamic equations for a straight magnetic cylinder, excited by both standing and propagating circularly polarized kink (m = 1) modes.
Results. The damping due to resonant absorption is independent of the polarization state. The morphology or appearance of the induced resonant flow is different for the two polarizations; however, there are essentially no differences in the forward-modeled Doppler signals. For nonlinear oscillations, the growth rate of small scales is determined by the total energy of the oscillation rather than the perturbation amplitude. We discuss possible implications and seismological relevance.
| Item Type: | Journal Article | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Magnetohydrodynamics , Solar oscillations, Sun -- Corona , Magnetohydrodynamic waves | ||||||||||||||||||
| Journal or Publication Title: | Astronomy & Astrophysics | ||||||||||||||||||
| Publisher: | EDP Sciences | ||||||||||||||||||
| ISSN: | 0004-6361 | ||||||||||||||||||
| Official Date: | 8 March 2022 | ||||||||||||||||||
| Dates: |
|
||||||||||||||||||
| Volume: | 659 | ||||||||||||||||||
| Article Number: | A73 | ||||||||||||||||||
| DOI: | 10.1051/0004-6361/202141945 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
| Date of first compliant deposit: | 3 May 2022 | ||||||||||||||||||
| Date of first compliant Open Access: | 3 May 2022 | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
