Coupling between the solar interior and atmosphere

B. Pintér*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Proceeding (Non-Journal item)


Global helioseismic oscillation modes are a window to the solar interior. They are acoustic waves trapped in the interior of the Sun and can give valuable information about the directly unobservable inner layers. The information can be properly decoded only if theoretical models explain how properties of the observed oscillations are influenced by their environment. Recent observations provide evidence that helioseismic modes are affected not only by the sub-photospheric layers but also by the lower atmosphere. Realistic numerical codes and simplified analytical models try to discover the complex nature of the interaction between helioseismic oscillations and the atmosphere. The complexity of the coupling is mainly due to the presence of an atmospheric magnetic field. Characteristic properties of oscillations, such as frequency, lifetime and penetration depth, can be derived from magnetohydrodynamic (MHD) equations, which govern the processes. Those properties are functions of the temperature profile of the coupled interior and atmospheric environment and the magnetic structure of the atmosphere. The derived equations provide valuable information about the ways oscillation modes are affected by the different properties of their medium. The models take into account realistic vertical profiles of temperature, plasma flows and magnetic field structures. In narrow layers, where the characteristic frequency of local magnetohydrodynamic (MHD) slow and/or Alfvén waves are equal to the global frequency of an acoustic wave, the latter will be resonantly coupled to the atmospheric magnetic field. The consequences of this resonant coupling are also studied by using dissipative MHD equations.

Original languageEnglish
Title of host publicationSpace Plasma Physics - Proceedings of the 4th School and Workshop on Space Plasma Physics
EditorsIvan Zhelyazkov, Todor Mishonov
PublisherAmerican Institute of Physics
Number of pages6
ISBN (Electronic)9780735411760
Publication statusPublished - 2013
Event4th Black Sea Biennial School and Workshop on Space Plasma Physics - Albena, Bulgaria
Duration: 19 Aug 201226 Aug 2012

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference4th Black Sea Biennial School and Workshop on Space Plasma Physics
Period19 Aug 201226 Aug 2012


  • helioseismology
  • magnetohydrodynamics
  • solar magnetic cycle
  • Sun


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