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Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-4709
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dc.contributor.authorSolanki, S. K.-
dc.contributor.authorWenzler, T.-
dc.contributor.authorSchmitt, D.-
dc.date.accessioned2018-09-17T12:45:19Z-
dc.date.available2018-09-17T12:45:19Z-
dc.date.issued2008-
dc.identifier.issn1432-0746de_CH
dc.identifier.issn0004-6361de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/10653-
dc.descriptionAll A&A articles are in open access ONE year after their publication date (August 2013)de_CH
dc.description.abstractAims: The latitude-distribution of solar activity as represented by sunspots is studied. Methods: We first determined the latitudinal distribution of a sunspot cycle by integrating the butterfly diagram at each latitude over the length of each cycle. We then formed the five lowest moments of the latitudinal distribution of all complete sunspot cycles since 1874 and compared these moments with each other. Results: The three lowest moments correlate remarkably well with each other. For example, the mean latitude of the sunspots during a cycle and the latitude range are correlated at the 0.96 level. A clear asymmetry is seen between the two hemispheres, with the southern solar hemisphere showing consistently stronger and more positive correlations than the northern hemisphere. When applied to different simple dynamo models, the same analysis reveals significant differences between the models and demonstrates that such moments are a useful diagnostic in distinguishing between dynamo models. Remarkably, dynamos without a meridional flow provide results closer to those of the Sun’s northern hemisphere, while a dynamo with a meridional flow produces fields more like those in the Sun’s southern hemisphere. This may provide a clue to the cause of the well-known north-south asymmetry of solar activity.de_CH
dc.language.isoende_CH
dc.publisherEDP Sciencesde_CH
dc.relation.ispartofAstronomy & Astrophysicsde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectSunspotsde_CH
dc.subjectSun: activityde_CH
dc.subjectSun: magnetic fieldsde_CH
dc.subjectMethods: data analysisde_CH
dc.subject.ddc500: Naturwissenschaftende_CH
dc.titleMoments of the latitudinal dependence of the sunspot cycle : a new diagnostic of dynamo modelsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
dc.identifier.doi10.21256/zhaw-4709-
dc.identifier.doi10.1051/0004-6361:20054282de_CH
zhaw.funding.euNode_CH
zhaw.issue2de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end632de_CH
zhaw.pages.start623de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume483de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Solanki, S. K., Wenzler, T., & Schmitt, D. (2008). Moments of the latitudinal dependence of the sunspot cycle : a new diagnostic of dynamo models. Astronomy & Astrophysics, 483(2), 623–632. https://doi.org/10.21256/zhaw-4709
Solanki, S.K., Wenzler, T. and Schmitt, D. (2008) ‘Moments of the latitudinal dependence of the sunspot cycle : a new diagnostic of dynamo models’, Astronomy & Astrophysics, 483(2), pp. 623–632. Available at: https://doi.org/10.21256/zhaw-4709.
S. K. Solanki, T. Wenzler, and D. Schmitt, “Moments of the latitudinal dependence of the sunspot cycle : a new diagnostic of dynamo models,” Astronomy & Astrophysics, vol. 483, no. 2, pp. 623–632, 2008, doi: 10.21256/zhaw-4709.
SOLANKI, S. K., T. WENZLER und D. SCHMITT, 2008. Moments of the latitudinal dependence of the sunspot cycle : a new diagnostic of dynamo models. Astronomy & Astrophysics. 2008. Bd. 483, Nr. 2, S. 623–632. DOI 10.21256/zhaw-4709
Solanki, S. K., T. Wenzler, and D. Schmitt. 2008. “Moments of the Latitudinal Dependence of the Sunspot Cycle : A New Diagnostic of Dynamo Models.” Astronomy & Astrophysics 483 (2): 623–32. https://doi.org/10.21256/zhaw-4709.
Solanki, S. K., et al. “Moments of the Latitudinal Dependence of the Sunspot Cycle : A New Diagnostic of Dynamo Models.” Astronomy & Astrophysics, vol. 483, no. 2, 2008, pp. 623–32, https://doi.org/10.21256/zhaw-4709.


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