Relativistic light tracing in the Gaia era
Date Issued
2018
Author(s)
Abstract
This contribution presents the analytical solution of the inverse ray tracing problem for photons emitted by a star and collected by an observer located in the gravitational field of the Solar System. This solution has been conceived to suit the accuracy achievable by the ESA Gaia satellite (launched on December 19, 2013) consistently with the measurement protocol in General Relativity adopted within the RAMOD framework. Aim of this study is to provide a general relativistic tool for the science exploitation of such a revolutionary mission, whose main goal is to trace back star directions from within our local curved space-time, therefore providing a three-dimensional map of our Galaxy. The calculations are performed assuming that the massive bodies of the Solar System move uniformly and have monopole and quadrupole structures. The results are useful for a thorough comparison and cross-checking validation of what already exists in the field of Relativistic Astrometry. Moreover, such an analytical solutions can be extended to model other measurements that require the same order of accuracy as that expected for Gaia.
Coverage
The Fourteenth Marcel Grossmann Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories : Proceedings of the MG14 Meeting on General Relativity
All editors
Bianchi, Massimo; Jantzen, Robert T.; Ruffini, Remo
Start page
3549
Conferenece
14th Marcel Grossman Meeting on General Relativity
Conferenece place
Roma, University "La Sapienza"
Conferenece date
12-18 July, 2015
Ads BibCode
2018mgm..conf.3549C
Rights
open.access
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