Coronal magnetic topologies in a spherical geometry II. Four balanced flux sources

R. C. Maclean, C. Beveridge, E. R. Priest

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The Sun's magnetic field is the primary factor determining the structure and evolution of the solar corona. Here, magnetic topology is used in combination with a Green's function method to model the global coronal magnetic field with a spherical photosphere. We focus on the case of three negative flux sources and one positive source, completing our previous categorisation of the topological states and bifurcations that are present in quadrupolar configurations in a spherical geometry. Three fundamental varieties of topological state are found, with three types of bifurcation taking one to the other. A comparison to the equivalent results for a planar photosphere is then carried out, and the differences between the two cases are explained.

Original languageEnglish
Pages (from-to)13-27
Number of pages15
JournalSolar Physics
Volume238
DOIs
Publication statusPublished - Oct 2006

Keywords

  • MINIMUM CURRENT CORONA
  • PHOTOSPHERIC FLUX
  • GREENS-FUNCTION
  • NULL POINTS
  • SOLAR-FLARE
  • RECONNECTION
  • SEPARATORS
  • REGIONS
  • FIELDS

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