Scalisi, J. orcid.org/0000-0001-7070-6322, Ruderman, M.S. orcid.org/0000-0003-2324-8466 and Erdélyi, R. orcid.org/0000-0003-3439-4127 (2023) Generation of vertical flows by torsional Alfvén pulses in zero-beta tubes with a transitional layer. The Astrophysical Journal, 951 (1). 60. ISSN 0004-637X
Abstract
Spicule activity in the chromosphere is modeled via the perturbation resulting from the propagation of an Alfvén wave pulse in a magnetic flux tube. Building on previous work, the model is augmented by the inclusion of a finite transitional layer in which the atmospheric density decreases exponentially. This additional complexity of the density stratification provides a more physical representation of the solar atmosphere and improves on the existing model. The wave pulse is introduced at the lower boundary of the flux tube and interacts with the transitional layer, also being partially reflected. The total mass flux induced by the pulse, and the proportion of this pulse that is transmitted through the layer, is calculated and examined in the context of spicules and the solar wind using an example solution. We find that the inclusion of the transitional layer results in more plasma flux being transferred into the upper solar atmosphere when compared with the case of a discontinuity. We examine how varying the parameters of this transitional layer affects the ratio of the flux above and below the layer.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Author(s). Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. https://creativecommons.org/licenses/by/4.0/ |
Keywords: | Solar atmosphere; Solar physics; Solar chromosphere; Solar transition region; Solar magnetic fields; Alfven waves; Magnetohydrodynamics; Solar magnetic bright points; Theoretical models; Solar spicules; Plasma jets; Jets |
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) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Jul 2023 14:41 |
Last Modified: | 10 Jul 2023 14:41 |
Status: | Published |
Publisher: | American Astronomical Society |
Refereed: | Yes |
Identification Number: | 10.3847/1538-4357/acd9ae |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:201370 |