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Relativistic Reference Frames of Local Observer and Space Radiointerferometer

Published online by Cambridge University Press:  19 July 2016

A.N. Alexandrov ,
S.L. Parnovsky  and
V.I. Zhdanov
A.N. Alexandrov
Affiliation:
Astronomical Observatory of Kiev University Observatorna St. 3 252053 Kiev, USSR
S.L. Parnovsky
Affiliation:
Astronomical Observatory of Kiev University Observatorna St. 3 252053 Kiev, USSR
V.I. Zhdanov
Affiliation:
Astronomical Observatory of Kiev University Observatorna St. 3 252053 Kiev, USSR

Extract

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In a considerable number of works on relativistic astrometry (see, e.g. Kovalevsky and Brumberg 1986) the reference frames (RFs) are introduced either by means of coordinate representation of a space-time metric, such as using harmonicity conditions (Brumberg and Kopejkin 1989), or on the basis of invariant constructions like Fermi coordinates (Synge 1960; Ashby and Bertotti 1986; Boucher 1986). Both approaches must, probably, be combined in applications. We consider the local observer RFs (LORFs) based on the Fermi coordinates and on the optical ones (Synge 1960), which are rigorously defined for a general metric and are directly related to observable quantities. In particular, the optical RF operates with the observed direction of the light source, whereas the Fermi RF seems to be a natural generalization of the classical Cartesian RF.

Type
Part 3: Concepts, Definitions, Models
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 115 - 117
Copyright
Copyright © Kluwer 1990 

References

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