Journal of Astrophysics and Astronomy

, Volume 21, Issue 3–4, pp 185–192 | Cite as

Coronal structures as tracers of sub-surface processes

  • Alexei A. Pevtsov
  • Richard C. Canfield


The solar corona – one of the most spectacular celestial shows and yet one of the most challenging puzzles – exhibits a spectrum of structures related to both the quiet Sun and active regions. In spite of dramatic differences in appearance and physical processes, all these structures share a common origin: they are all related to the solar magnetic field. The origin of the field is beneath the turbulent convection zone, where the magnetic field is not a master but a slave, and one can wonder how much the coronal magnetic field “remembers” its dynamo origin. Surprisingly, it does. We will describe several observational phenolmena that indicate a close relationship between coronal and sub-photospheric processes.

Key words

Sun solar corona magnetic field helicity 


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Copyright information

© Indian Academy of Sciences 2000

Authors and Affiliations

  • Alexei A. Pevtsov
    • 1
  • Richard C. Canfield
    • 1
  1. 1.Montana State UniversityBozemanUSA

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