Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iau...261.0204p&link_type=abstract
American Astronomical Society, IAU Symposium #261. Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Ana
Astronomy and Astrophysics
Astronomy
Scientific paper
The IAU framework for relativity has been defined by a series of Recommendations starting in 1991 and ending (so far) in 2006. Over the years, this framework has also been introduced in the IERS Standards (1992) and Conventions (1996, 2003). In preparation for the next edition of the IERS Conventions, I'll review the work under way to obtain a description which is at the same time conforming to the Recommendations, complete and consistent throughout the document. A large part of the work is related to the issues debated in Commission 52 "Relativity in fundamental astronomy", to be discussed in this meeting. In addition, several updates under realization or under consideration for the IERS Conventions are presented. In chapter 10 (models for space-time coordinates and equations of motion), the transformation from proper time to coordinate time in the vicinity of the Earth is treated and numerical examples are provided for the different terms in the relativistic expression for the acceleration of an Earth satellite. In chapter 11 (models for signal propagation), the model for laser ranging is more completely presented.
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