Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves

We present the results of three-dimensional (3D) ideal magnetohydrodynamics (MHD) simulations on the dynamics of a perpendicularly inhomogeneous plasma disturbed by propagating Alfvénic waves. Simpler versions of this scenario have been extensively studied as the phenomenon of phase mixing. We show...

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Autores principales: Magyar, Norbert, Doorsselaere, Tom Van, Goossens, Marcel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5665992/
https://www.ncbi.nlm.nih.gov/pubmed/29093462
http://dx.doi.org/10.1038/s41598-017-13660-1
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author Magyar, Norbert
Doorsselaere, Tom Van
Goossens, Marcel
author_facet Magyar, Norbert
Doorsselaere, Tom Van
Goossens, Marcel
author_sort Magyar, Norbert
collection PubMed
description We present the results of three-dimensional (3D) ideal magnetohydrodynamics (MHD) simulations on the dynamics of a perpendicularly inhomogeneous plasma disturbed by propagating Alfvénic waves. Simpler versions of this scenario have been extensively studied as the phenomenon of phase mixing. We show that, by generalizing the textbook version of phase mixing, interesting phenomena are obtained, such as turbulence-like behavior and complex current-sheet structure, a novelty in longitudinally homogeneous plasma excited by unidirectionally propagating waves. This study is in the setting of a coronal hole. However, it constitutes an important finding for turbulence-related phenomena in astrophysics in general, relaxing the conditions that have to be fulfilled in order to generate turbulent behavior.
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spelling pubmed-56659922017-11-08 Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves Magyar, Norbert Doorsselaere, Tom Van Goossens, Marcel Sci Rep Article We present the results of three-dimensional (3D) ideal magnetohydrodynamics (MHD) simulations on the dynamics of a perpendicularly inhomogeneous plasma disturbed by propagating Alfvénic waves. Simpler versions of this scenario have been extensively studied as the phenomenon of phase mixing. We show that, by generalizing the textbook version of phase mixing, interesting phenomena are obtained, such as turbulence-like behavior and complex current-sheet structure, a novelty in longitudinally homogeneous plasma excited by unidirectionally propagating waves. This study is in the setting of a coronal hole. However, it constitutes an important finding for turbulence-related phenomena in astrophysics in general, relaxing the conditions that have to be fulfilled in order to generate turbulent behavior. Nature Publishing Group UK 2017-11-01 /pmc/articles/PMC5665992/ /pubmed/29093462 http://dx.doi.org/10.1038/s41598-017-13660-1 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Magyar, Norbert
Doorsselaere, Tom Van
Goossens, Marcel
Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title_full Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title_fullStr Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title_full_unstemmed Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title_short Generalized phase mixing: Turbulence-like behaviour from unidirectionally propagating MHD waves
title_sort generalized phase mixing: turbulence-like behaviour from unidirectionally propagating mhd waves
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5665992/
https://www.ncbi.nlm.nih.gov/pubmed/29093462
http://dx.doi.org/10.1038/s41598-017-13660-1
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