No CrossRef data available.
Article contents
Relativistic astrometry and astrometric relativity
Published online by Cambridge University Press: 01 October 2007
Abstract
Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
The interplay between modern astrometry and gravitational physics is very important for the progress in both these fields. Below some threshold of accuracy, Newtonian physics fails to describe observational data and the Einstein's relativity theory must be used to model the data adequately. Many high-accuracy astronomical techniques have already passed this threshold. Moreover, modern astronomical observations cannot be adequately modeled if relativistic effects are considered as small corrections to Newtonian models. The whole way of thinking must be made compatible with relativity: this starts with the concepts of time, space and reference systems.
An overview of the standard general-relativistic framework for modeling of high-accuracy astronomical observations is given. Using this framework one can construct a standard set of building blocks for relativistic models. A suitable combination of these building blocks can be used to formulate a model for any given type of astronomical observations. As an example the problem of four dimensional solar system ephemerides is exposed in more detail. The limits of the present relativistic formulation are also briefly summarized.
On the other hand, high-accuracy astronomical observations play important role for gravitational physics itself, providing the latter with crucial observational tests. Perspectives for these astronomical tests for the next 15 years are summarized.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 356 - 362
- Copyright
- Copyright © International Astronomical Union 2008
References
Anglada-Escudé, G., Klioner, S. A., & Torra, J. 2007, Proc. of the 11th Marcel Grossmann Meeting on General Relativity, Kleinert, H., Jantzen, R. T. & Ruffini, R. (eds.), World Scientific, Singapore, in pressGoogle Scholar
ESA, 2000, GAIA: Composition, Formation and Evolution of the Galaxy, Concept and Technology Study Report, ESA-SCI(2000)4 (Noordwijk: European Space Agency)Google Scholar
Fuch, B. & Bastian, U., 2005, In: The Three-Dimensional Universe with Gaia, ESA SP-576, 573Google Scholar
Gwinn, C., Eubanks, T., Pyne, T., Birkinshaw, M., & Matsakis, D. 1997, Astrophys. J., 485, 87Google Scholar
Hestroffer, D., Mouret, S., Mignard, F., Berthier, J., & Tanga, P. 2008, this volume, p.266CrossRefGoogle Scholar
IAU, 2006, “Re-definition of Barycentric Dynamical Time, TDB”, Resolution adopted by the XXVIth General AssemblyGoogle Scholar
Klioner, S. 2007, In: Lasers, Clocks and Drag-Free: Exploration of Relativistic Gravity in Space, Dittus, H., Lämmerzahl, C., Turyshev, S. G. (eds.), Astrophysics and Space Science Library 349, Springer, Berlin, 399Google Scholar
Klioner, S. A., & Soffel, M. H. 2005, In: The Three-Dimensional Universe with Gaia, ESA SP-576, 305Google Scholar
Klioner, S. A., Soffel, M., & Le Poncin-Lafitte, C. 2007, In: The Celestial Reference Frame for the Future, Proceedings of Journées'2007, Capitaine, N. (ed.), Paris Observatory, Paris, in pressGoogle Scholar
Mignard, F. & Klioner, S. A. 2007, Proc. of the 11th Marcel Grossmann Meeting on General Relativity, Kleinert, H., Jantzen, R. T., & Ruffini, R. (eds.), World Scientific, Singapore, in pressGoogle Scholar
Milani, A., Vokrouhlicky, D.Villani, D., Bonanno, C., & Rossi, A. 2002, Phys.Rev.D, 66, 082001CrossRefGoogle Scholar
You have
Access