Tracing a relativistic Milky Way within the RAMOD measurement protocol

摘要

Advancement in astronomical observations and technical instrumentationimplies taking into account the general relativistic effects due thegravitational fields encountered by the light while propagating from the starto the observer. Therefore, data exploitation for Gaia-like space astrometricmission (ESA, launch 2013) requires a fully relativistic interpretation of theinverse ray-tracing problem, namely the development of a highly accurateastrometric models in accordance with the geometrical environment affectinglight propagation itself and the precepts of the theory of measurement. Thiscould open a new rendition of the stellar distances and proper motions, or evenan alternative detection perspective of many subtle relativistic effectssuffered by light while it is propagating and subsequently recorded in thephysical measurements.