A topological analysis of the magnetic breakout model for an eruptive solar flare

R C Maclean, C Beveridge, D Longcope, D Brown, E R Priest

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The magnetic breakout model gives an elegant explanation for the onset of an eruptive solar flare, involving magnetic reconnection at a coronal null point which leads to the initially enclosed flux 'breaking out' to large distances. In this paper we take a topological approach to the study of the conditions required for this breakout phenomenon to occur. The evolution of a simple delta sunspot model, up to the point of breakout, is analysed through several sequences of potential and linear force-free quasi-static equilibria. We show that any new class of field lines, such as those connecting to large distances, must be created through a global topological bifurcation and derive rules to predict the topological reconfiguration due to various types of bifurcation.

Original languageEnglish
Pages (from-to)2099-2120
Number of pages22
JournalProceedings of the Royal Society A - Mathematical, Physical & Engineering Sciences
Volume461
Issue number2059
DOIs
Publication statusPublished - 8 Jul 2005

Keywords

  • solar flare
  • magnetic breakout
  • magnetic topology
  • solar corona.
  • 3-DIMENSIONAL NULL POINTS
  • CORONAL MASS EJECTIONS
  • FORCE-FREE
  • CURRENT SHEETS
  • FLUX EMERGENCE
  • FIELDS
  • RECONNECTION
  • EVOLUTION
  • FEATURES
  • COMPLEX

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