Ballai, I. orcid.org/0000-0002-3066-7653, Asiri, F. orcid.org/0009-0006-8714-2432, Fedun, V. orcid.org/0000-0002-0893-7346 et al. (3 more authors) (2024) Slow body MHD waves in inhomogeneous photospheric waveguides. Universe, 10 (8). 334. ISSN 2218-1997
Abstract
The present study deals with the investigation of the oscillatory morphology of guided slow body MHD modes in inhomogeneous magnetic waveguides that appear in the solar photospheric plasmas in the forms of pores or sunspots. The eigenvalues and eigenfunctions related to these waves in an isothermal plasma are obtained numerically by solving a Sturm-Liouville problem with Dirichlet boundary conditions set at the boundary of the waveguide. Our results show that the inhomogeneities in density (pressure) and magnetic field have a strong influence on the morphology of waves, and higher-order more are sensitive to the presence of inhomogeneity. Our results suggest that he identification of modes just by a simple visual inspection can lead to a misinterpretation of the nature of modes.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Keywords: | magnetohydrodynamic (MHD) waves; plasma inhomogeneity; magnetic field; guided waves; sunspots and pores |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > School of Electrical and Electronic Engineering The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematical and Physical Sciences |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - HORIZON 2020 824135 EUROPEAN COMMISSION - HORIZON 2020 955620 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/V000977/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 09 Sep 2024 14:57 |
Last Modified: | 09 Sep 2024 14:57 |
Status: | Published |
Publisher: | MDPI AG |
Refereed: | Yes |
Identification Number: | 10.3390/universe10080334 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:217003 |