Probing solar and stellar interior dynamics and dynamo

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Solar and stellar activity is a result of complex interaction between magnetic field, turbulent convection and differential rotation in a star's interior. Magnetic field is believed to be generated by a dynamo process in the convection zone. It emerges on the surface forming sunspots and starspots. Localization of the magnetic spots and their evolution with the activity cycle is determined by large-scale interior flows. Thus, the internal dynamics of the Sun and other stars hold the key to understanding the dynamo mechanism and activity cycles. Recently, significant progress has been made for modeling magnetohydrodynamics of the stellar interiors and probing the internal rotation and large-scale dynamics of the Sun by helioseismology. Also, asteroseismology is beginning to probe interiors of distant stars. I review key achievements and challenges in our quest to understand the basic mechanisms of solar and stellar activity.

Original languageEnglish (US)
Pages (from-to)830-837
Number of pages8
JournalAdvances in Space Research
Volume41
Issue number6
DOIs
StatePublished - Jan 1 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

Keywords

  • Dynamo
  • Helioseismology
  • Magnetism
  • Solar and stellar activity
  • Solar cycle
  • Solar interior
  • Sun
  • Sunspots

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