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Relativistic Aspects of Reference Systems and Time Scales

Published online by Cambridge University Press:  30 March 2016

V.A. Brumberg
V.A. Brumberg*
Affiliation:
Institute of Applied Astronomy, 197042 St. Petersburg

Extract

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Mindful of the fact that any time and space coordinates of General Relativity Theory (GRT) are not, in general, physically meaningful and measurable quantities, one may choose between three possibilities in applying GRT to ephemeris astronomy:

  1. 1) avoid coordinates completely, i.e., construct coordinate-independent theories of light propagation and solar system body motion involving the removal of all coordinate-dependent quantities from the present system of astronomical constants;

  2. 2) use any coordinate system to describe observational procedures and to solve dynamics problems, provided that one and the same coordinates be used for both the kinematics and dynamics of a specific problem;

  3. 3) adopt IAU recommendations specifying reference systems and time scales to be used in ephemeris astronomy.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 133 - 139
Copyright
Copyright © Kluwer 1992

References

Brumberg, V.A., 1991, “Relativistic Hierarchy of Reference Systems and Time Scales,” Proc. IAU Colloq. No. 127, Eds. Hughes, J.A., Smith, C.A. and Kaplan, G.H., p36, USNO, Washington.Google Scholar
Fukushima, T., Fujlmoto, M.-K., Kinoshita, H., and Aoki, S., 1986, “A System of Astronomical Constants in the Relativistic Framework,” Celest. Mech. 38, 215.Google Scholar
Klioner, S.A., “The Problem of Clock Synchronization: A Relativistic Approach,” Celest. Mech. (in press).Google Scholar
Soffel, M.H., and Brumberg, V.A., “Relativistic Reference Frames and Time Scales: Questions and Answers,” Celest. Mech. (In press).Google Scholar