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Propagating Alfvén waves in open structures with random structuring
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dc.contributor.author | Pascoe, David James | |
dc.contributor.author | De Moortel, Ineke | |
dc.contributor.author | Pagano, Paolo | |
dc.contributor.author | Howson, Thomas Alexander | |
dc.date.accessioned | 2022-09-27T11:30:08Z | |
dc.date.available | 2022-09-27T11:30:08Z | |
dc.date.issued | 2022-10-01 | |
dc.identifier | 280848825 | |
dc.identifier | 3c116825-f938-43c0-b8b2-dedeeb9831a1 | |
dc.identifier | 000852389700009 | |
dc.identifier | 85151073293 | |
dc.identifier.citation | Pascoe , D J , De Moortel , I , Pagano , P & Howson , T A 2022 , ' Propagating Alfvén waves in open structures with random structuring ' , Monthly Notices of the Royal Astronomical Society , vol. 516 , no. 2 , pp. 2181–2188 . https://doi.org/10.1093/mnras/stac2294 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | ORCID: /0000-0002-4895-6277/work/120051618 | |
dc.identifier.other | ORCID: /0000-0002-1452-9330/work/120052286 | |
dc.identifier.uri | https://hdl.handle.net/10023/26076 | |
dc.description | Funding: The research leading to these results has received funding from the UK Science and Technology Facilities Council (consolidated grant ST/N000609/1), the European Union Horizon 2020 research and innovation programme (grant agreement No. 647214). IDM received funding from the Research Council of Norway through its Centres of Excellence scheme, project number 262622. | en |
dc.description.abstract | We consider the behaviour of Alfvén waves propagating in a medium with random density perturbations. The imposed density perturbations have a broadband spectrum and their characteristic spatial scale may be defined according to the peak in the spectrum. The interaction of the boundary driven Alfvén waves with the medium generates reflections most efficiently when their wavelength is comparable to the spatial scale of the density perturbations. For our monotonic driver, this leads to the generation of quasi-periodic oscillations. The periods of oscillation of the propagating Alfvén waves is no longer only associated with the driver. Additional periodicities may be associated with one or more characteristic spatial scales in the density profile, or with beating between other spectral components. Multiple wave reflections cause oscillatory power to be retained at low altitudes, increasing opportunities to contribute to heating at those locations. | |
dc.format.extent | 8 | |
dc.format.extent | 2607207 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | MHD | en |
dc.subject | Sun: atmosphere | en |
dc.subject | Sun: corona | en |
dc.subject | Sun: oscillations | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Propagating Alfvén waves in open structures with random structuring | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Research Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | Science & Technology Facilities Council | en |
dc.contributor.sponsor | The Leverhulme Trust | en |
dc.contributor.institution | University of St Andrews. Applied Mathematics | en |
dc.identifier.doi | 10.1093/mnras/stac2294 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | 647214 | en |
dc.identifier.grantnumber | ST/S000402/1 | en |
dc.identifier.grantnumber | ST/W001195/1 | en |
dc.identifier.grantnumber | RPG-2021-114 | en |
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