Séminaire / Seminar GReCO |
| « `E pur si muove’ A real-time detection of our motion through space » |
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Christian Marinoni |
| High-precision astrometric experiments will allow to detect our proper acceleration through space via real-time observations of the change in the aberration of sources at cosmic distances. This `??Aberration Drift’ eff??ect is a powerful consistency test of FLRW metrics, it may set independent constraints on the amplitude of the Hubble constant and the linear growth rate of cosmic structures, and it may also be instrumental in searching for evidences of new physics beyond the standard model. I will present the mechanics of this novel test of cosmology, discuss the physics to which it is sensitive and show simulated forecasts of the accuracy with which it can be implemented by ongoing satellite missions such as Gaia or upgraded future experiments. |
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lundi 25 septembre 2017 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |