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Article: Non-axisymmetric spherical interface dynamos

TitleNon-axisymmetric spherical interface dynamos
Authors
KeywordsMagnetohydrodynamics
Sun: Interior
Sun: Magnetic Field
Issue Date2004
PublisherE D P Sciences. The Journal's web site is located at http://www.aanda.org
Citation
Astronomy And Astrophysics, 2004, v. 423 n. 3, p. L37-L40 How to Cite?
AbstractA fully three-dimensional, nonlinear, time-dependent spherical interface dynamo with a solar-like internal differential rotation and a single-cell meridional circulation is investigated. There are four regions in our interface dynamo model: a uniformly rotating core, a thin differentially rotating tachocline, a turbulent convection zone and a nearly insulating exterior. The different regions are coupled by the electric and magnetic matching conditions at the interfaces. For the first time, non-axisymmetric spherical nonlinear interface dynamos are found. When the magnetic Reynolds number based on the differential rotation is small or when the effect of the meridional circulation is substantial, we show that the spherical interface dynamos are non-axisymmetric even though the α-distribution, differential rotation and meridional circulation are all axisymmetric. Implication of the results for the solar dynamo is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/156210
ISSN
2014 Impact Factor: 4.378
2015 SCImago Journal Rankings: 2.446
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, KHen_US
dc.contributor.authorLiao, Xen_US
dc.contributor.authorZhang, Ken_US
dc.contributor.authorJones, CAen_US
dc.date.accessioned2012-08-08T08:40:51Z-
dc.date.available2012-08-08T08:40:51Z-
dc.date.issued2004en_US
dc.identifier.citationAstronomy And Astrophysics, 2004, v. 423 n. 3, p. L37-L40en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/10722/156210-
dc.description.abstractA fully three-dimensional, nonlinear, time-dependent spherical interface dynamo with a solar-like internal differential rotation and a single-cell meridional circulation is investigated. There are four regions in our interface dynamo model: a uniformly rotating core, a thin differentially rotating tachocline, a turbulent convection zone and a nearly insulating exterior. The different regions are coupled by the electric and magnetic matching conditions at the interfaces. For the first time, non-axisymmetric spherical nonlinear interface dynamos are found. When the magnetic Reynolds number based on the differential rotation is small or when the effect of the meridional circulation is substantial, we show that the spherical interface dynamos are non-axisymmetric even though the α-distribution, differential rotation and meridional circulation are all axisymmetric. Implication of the results for the solar dynamo is discussed.en_US
dc.languageengen_US
dc.publisherE D P Sciences. The Journal's web site is located at http://www.aanda.orgen_US
dc.relation.ispartofAstronomy and Astrophysicsen_US
dc.subjectMagnetohydrodynamicsen_US
dc.subjectSun: Interioren_US
dc.subjectSun: Magnetic Fielden_US
dc.titleNon-axisymmetric spherical interface dynamosen_US
dc.typeArticleen_US
dc.identifier.emailChan, KH:mkhchan@hku.hken_US
dc.identifier.authorityChan, KH=rp00664en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1051/0004-6361:200400034en_US
dc.identifier.scopuseid_2-s2.0-4243123031en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-4243123031&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume423en_US
dc.identifier.issue3en_US
dc.identifier.spageL37en_US
dc.identifier.epageL40en_US
dc.identifier.isiWOS:000223850400002-
dc.publisher.placeFranceen_US
dc.identifier.scopusauthoridChan, KH=7406033542en_US
dc.identifier.scopusauthoridLiao, X=7202134147en_US
dc.identifier.scopusauthoridZhang, K=7404451892en_US
dc.identifier.scopusauthoridJones, CA=34770413700en_US

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