Is the sun spherical

Details Is the sun spherical Is the sun spherical

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975poast..23..159k&link_type=abstract

Postepy Astronomii, vol. 23, July-Sept. 1975, p. 159-175. In Polish.

Physics

Quadrupoles, Solar Oblateness, Solar Rotation, Field Theory (Physics), Gravitational Effects, Magnetic Moments, Mercury (Planet), Perihelions, Solar Magnetic Field, Solar Orbits

Scientific paper

The article is a review of Dicke's work on the hypothetical quadrupole moment of the sun. There are presented: (1) the difficulties of the 19th century astronomy connected with the perihelion motion of Mercury, which led the astronomers to the first suspicion that the sun might have a quadrupole moment; (2) the historical pedigree and the field equations of the Brans-Dicke theory, together with the meaning of the solar quadrupole moment for this theory; (3) a theoretical model of structure of the sun with rapidly rotating core; (4) the experiment of Dicke and Goldenberg in which the sun's quadrupole moment was supposed to be measured; and (5) the experiment of Hill and coworkers, suggesting the absence of any meaningful quadrupole moment in the sun.

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