Helioseismology: A probe of the solar interior, atmosphere, and activity cycle

Details Helioseismology: A probe of the solar interior, atmosphere, and activity cycle Helioseismology: A probe of the solar interior, atmosphere, and activity cycle

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.confq..27r&link_type=abstract

International Solar Wind 8 Conference, p. 27

Physics

Helioseismology, Solar Interior, Solar Atmosphere, Solar Activity, Solar Cycles, Solar Physics, Atmospheric Heating, Solar Temperature, Solar Neutrinos

Scientific paper

Helioseismology began in earnest in the mid 1970's. In the two decades which have elapsed since that time this branch of solar physics has become a mature field of research. Helioseismology has demonstrated that the solar convection zone is about twice as deep as was generally thought to be the case before 1977. Helioseismology has also provided measurements of the solar internal angular velocity over much of the sun's interior. Helioseismology has also ruled out models which would solve the solar neutrino problem by a lowering of the temperature of the core. Recently, some of the seismic properties of the sun have been demonstrated to vary with changing levels of solar activity. Also, helioseismology has recently provided evidence for helical flow patterns in the shallow, sub-photosphere layers. The techniques of helioseismology are also expanding to include seismic probes of solar active regions. Some work is also being conducted into the possible contributions of the solar acoustic models to the heating of the solar atmosphere. In this talk I will highlight a few of the above results and concentrate on current areas of research in the field.

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