The oblateness of the sun

Details The oblateness of the sun The oblateness of the sun

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976s%26w....15..125b&link_type=abstract

Sterne und Weltraum, vol. 15, Apr. 1976, p. 125-129. In German.

Physics

Mercury (Planet), Perihelions, Relativistic Effects, Solar Oblateness, Gravitation Theory, Newton Theory, Point Sources, Quadrupoles, Solar Gravitation, Solar Reflectors, Solar System

Scientific paper

The motion of the perihelion of the planet Mercury and the factors producing it are examined. These factors are related to relativistic effects and possible deviations of the shape of the sun from a form which corresponds to a spherical symmetry in the mass distribution. Effects of these deviations on the gravitational force relations are expressed with the aid of the solar quadrupole moment. Phenomena which could produce a solar quadrupole moment are discussed and a description is given of an experiment conducted by Dicke and Goldenberg in 1966. The experiment had the objective to measure the oblateness of the sun with the aid of a telescope of special design. The results reported by Dicke and Goldenberg could not be confirmed in an experiment carried out by Hill and Stebbins in 1974. Possible reasons for the discrepancy in the results of the two experiments are considered.

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