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dc.contributor.authorWaugh, Rose F. P.
dc.contributor.authorJardine, Moira M.
dc.identifier.citationWaugh , R F P & Jardine , M M 2019 , ' Magnetic support of stellar slingshot prominences ' , Monthly Notices of the Royal Astronomical Society , vol. 483 , no. 2 , pp. 1513-1522 .
dc.identifier.otherPURE: 256915103
dc.identifier.otherPURE UUID: 67bde8c2-c8e9-4317-8a4a-e53a0c8c3ee6
dc.identifier.otherScopus: 85067017820
dc.identifier.otherWOS: 000462258200008
dc.identifier.otherORCID: /0000-0002-1466-5236/work/57821844
dc.descriptionThe authors acknowledge support from STFC.en
dc.description.abstractWe present models for the magnetic support of the ‘slingshot prominences’ observed in the coronae of rapidly rotating stars. We calculate mechanical equilibria of loops in a spherical geometry. Prominence-forming loops are found first for dipolar and quadrupolar stellar fields that are fully closed. Equilibria are then found within the stellar wind for a dipolar field that becomes open beyond a given radius. We identify two physical processes that may produce gaps in the distribution of prominence heights: the location of this opening radius, and the behaviour of the buoyancy force. The buoyancy may differ from one prominence-bearing loop to another if they are at different temperatures, thus potentially smearing out any gap in observed height distributions. We produce synthetic prominence distributions and compare to the observations of two well-observed stars: AB Doradus and Speedy Mic. The model recovers the more compact prominence distribution observed for Speedy Mic and reproduces better the overall shape of the height distributions for both stars when the opening radius is beyond the co-rotation radius.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectStars: individual: AB Doren
dc.subjectStars: low massen
dc.subjectStars: magnetic fielden
dc.subjectQB Astronomyen
dc.titleMagnetic support of stellar slingshot prominencesen
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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