Author ORCID Identifier
Document Type
Article
Publication Date
8-17-2023
Abstract
Context. The recently proposed aether scalar tensor (AeST) model reproduces both the successes of particle dark matter on cosmological scales and those of modified Newtonian dynamics (MOND) on galactic scales. But the AeST model reproduces MOND only up to a certain maximum galactocentric radius. Since MOND is known to fit very well to observations at these scales, this raises the question of whether the AeST model comes into tension with data. Aims. We tested whether or not the AeST model is in conflict with observations using a recent analysis of data for weak gravitational lensing. Methods. We solved the equations of motion of the AeST model, analyzed the solutionsa behavior, and compared the results to observational data. Results. The AeST model shows some deviations from MOND at the radii probed by weak gravitational lensing. The data show no clear indication of these predicted deviations.
Keywords
dark matter, galaxies: kinematics and dynamics, gravitation, gravitational lensing: weak
Publication Title
Astronomy and Astrophysics
Grant
PHY-1911909
Rights
© The Authors 2023. This is an Open Access work distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Aether scalar tensor theory confronted with weak lensing data at small accelerations T. Mistele, S. McGaugh and S. Hossenfelder A&A, 676 (2023) A100 DOI: https://doi.org/10.1051/0004-6361/202346025
Manuscript Version
Final Publisher Version