Relativistic astrometry

Details Relativistic astrometry Relativistic astrometry

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.110...95s&link_type=abstract

(Deutsche Forschungsgemeinschaft, Universitaet Bamberg, Universitaet Erlangen-Nuernberg, and Victoria University of Manchester,

Astronomy and Astrophysics

Astronomy

1

Astrometry, Gravitational Effects, Relativistic Theory, Spaceborne Astronomy, Astronomical Coordinates, Gauge Theory, Light Transmission, Solar Gravitation, Space-Time Functions

Scientific paper

Relativistic astrometry concepts such as Weyl's (1970) stellar compass or the flat-space plus forces concept are discussed. To discuss the flat-space concept it is observed that for directions not directly towards the giant-gas planets and for accuracies of about 0.001 arcsec, only the spherical part of the solar gravitational field in the post-Newtonian approximation is considered. The effect of a gauge transformation on the relations for the gravitational light deflection to post-Newtonian order is examined. Pictures showing the stellar sky as seen from the vicinity of a strongly gravitating source are presented in order to visualize the effects from light deflection.

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