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Explaining the Hemispheric Pattern of Filament Chirality

  • Duncan H. Mackay (a1) and Anthony R. Yeates (a2)
Abstract
Abstract

Solar filaments are known to exhibit a hemispheric pattern in their chirality, where dextral/sinistral filaments dominate in the northern/southern hemisphere. We show that this pattern may be explained through data driven 3D global magnetic field simulations of the Sun's large-scale magnetic field. Through a detailed comparison with 109 filaments over a 6 month period, the model correctly reproduces the filament chirality and helicity with a 96% agreement. The data driven simulation is extended to run over a full solar cycle, where predictions are made for the spatial and temporal dependence of the hemispheric pattern over the solar cycle.

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

D. H. Mackay & A. A. van Ballegooijen 2006, ApJ, 641, 577

A. A. van Ballegooijen , E. R. Priest , & D. H. Mackay 2000, ApJ, 539, 983

W. H. Yang , P. A. Sturrock , & S. K. Antiochos 1986, ApJ, 309, 383

A. R. Yeates , D. H. Mackay , & A. A. van Ballegooijen 2007, Solar Phys., 245, 87

A. R. Yeates , D. H. Mackay , & A. A. van Ballegooijen 2008, Solar Phys., 247, 103

A. R. Yeates & D. H. Mackay 2009, Solar Phys., 254, 77

A. R. Yeates & D. H. Mackay 2012, ApJL, 753, L34

J. B. Zirker , J.-L. Leroy , & V. Gaizauskas 1997, Solar Phys., 176, 279

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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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