Proposal for a Real-Time Detection of our Acceleration through Space

Abstract : 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.
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Phys.Rev.Lett., 2018, 121 (2), pp.021101. 〈10.1103/PhysRevLett.121.021101〉
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https://hal.archives-ouvertes.fr/hal-01719639
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Soumis le : mercredi 28 février 2018 - 12:17:40
Dernière modification le : mardi 18 septembre 2018 - 20:02:37

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Julien Bel, Christian Marinoni. Proposal for a Real-Time Detection of our Acceleration through Space. Phys.Rev.Lett., 2018, 121 (2), pp.021101. 〈10.1103/PhysRevLett.121.021101〉. 〈hal-01719639〉

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