Jain, R. orcid.org/0000-0002-0080-5445 (2020) The nature of the frequency spectrum of shear Alfvén waves in a solar coronal arcade. Physics of Plasmas, 27 (7). 072902. ISSN 1070-664X
Abstract
Frequency power spectra are computed theoretically for shear Alfvén waves excited in a solar coronal arcade by two separate perturbations, a cosine-modulated Gaussian perturbation and an impulsive driver. The arcade is assumed to consist of potential magnetic field lines embedded in a stratified plasma. It is shown that although the power spectra have discrete frequencies for each field line, a cumulative effect of many field lines of different widths/lengths in an arcade will be that of a continuous spectrum, if seen together as one entity. The nature of the frequency power spectra can constrain the size and the type of driver.
Metadata
Item Type: | Article |
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Authors/Creators: | |
Copyright, Publisher and Additional Information: | © 2020 The Author. This is an author-produced version of a paper subsequently published in Physics of Plasmas. Uploaded in accordance with the publisher's self-archiving policy. |
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: | 02 Jul 2020 06:33 |
Last Modified: | 02 Jul 2020 07:18 |
Status: | Published |
Publisher: | AIP Publishing |
Refereed: | Yes |
Identification Number: | 10.1063/5.0002512 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:162722 |