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Maclaurin spheroid in disguise: New figures of equilibrium with external magnetic support

hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorHURÉ, Jean-Marc
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorSTAELEN, Clément
dc.date.accessioned2024-09-13T02:13:55Z
dc.date.available2024-09-13T02:13:55Z
dc.date.issued2024
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/201567
dc.description.abstractEnWe show that a rigidly rotating, homogeneous ellipsoid of revolution threaded by a uniform, coaxial magnetic field is a possible figure of equilibrium. While the spheroidal shape is fully preserved, the rotation rate is modified. Accordingly, we extend the fundamental formula by Maclaurin. In contrast with the nonmagnetic case, prolate shapes are permitted, but there are critical states in the form of maximum elongations, depending on ionization fraction, ion/electron drift, magnetic field, and mass density. As checked from numerical simulations based on the self-consistent-field method, prolate states survive to gas compressibility. The relevance to interstellar clouds is outlined.
dc.language.isoen
dc.title.enMaclaurin spheroid in disguise: New figures of equilibrium with external magnetic support
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevD.110.063017
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv2406.19210
bordeaux.journalPhys.Rev.D
bordeaux.page063017
bordeaux.volume110
bordeaux.hal.laboratoriesLaboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804*
bordeaux.issue6
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04695292
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04695292v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Phys.Rev.D&rft.date=2024&rft.volume=110&rft.issue=6&rft.spage=063017&rft.epage=063017&rft.au=HUR%C3%89,%20Jean-Marc&STAELEN,%20Cl%C3%A9ment&rft.genre=article


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