Magnetic field corrections to solar oscillation frequencies

Details Magnetic field corrections to solar oscillation frequencies Magnetic field corrections to solar oscillation frequencies

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..603r&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Oct. 16, 1986, p. 603-605. Research supported by the Department of Education of Northern Irel

Physics

33

Helioseismology, Solar Magnetic Field, Solar Oscillations, Convection, Solar Cycles, Solar Interior

Scientific paper

The presence of a magnetic field both deep within the Sun and in its atmosphere raises the question of the field's influence on the p- and g-modes of oscillation and the implications for helioseismology. Recently, Woodard and Noyes have reported a slight but systematic decrease in frequencies of low-degree p-modes from 1980 to 1984. The authors argue that the frequencies of both p- and g-modes are modified by a magnetic field. In particular, they attribute the decrease in p-mode frequencies to a magnetic field within the solar interior evolving over the solar cycle. Field strengths at the base of the convection zone of at least 5×105G are required.

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