2018/02/28 by Julien Bel, J. Bel, C. Marinoni +1 · 5 citations
Physics and Astronomy · #Acceleration #Amplitude #Astronomy and Astrophysical Research #Astrophysics #COSMIC cancer database #Classical mechanics #Cosmic background radiation #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Formalism (music) #Galaxies: Formation, Evolution, Phenomena #Hubble's law #Observational cosmology #Particle physics #Physics #Physics beyond the Standard Model #Quantum mechanics #Theoretical physics #astro-ph.CO
paper · pdf · doi:10.1103/physrevlett.121.021101
published in Physical Review Letters 121(2), 021101 (American Physical Society) · 5 pages, 5 figures, revised version to appear in PRL
arxiv created 2018/06/07 · openalex publication_date 2018/07/09 · arxiv updated 2018/07/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Our proper acceleration with respect to the cosmic microwave background results in a real-time change of the angular position of distant extragalactic sources. The cosmological component of this aberration drift signal, the noninertial motion generated by the large-scale distribution of matter, can, in principle, be detected by future high-precision astrometric experiments. It will provide interesting consistency tests of the standard model of cosmology, set independent constraints on the amplitude of the Hubble constant and the linear growth rate of cosmic structures, and be instrumental in searching for evidence of new physics beyond the standard model. We present the formalism of this novel cosmological test, discuss the physics to which it is sensitive, and show simulated forecasts of the accuracy with which it can be implemented.