Aether scalar tensor theory confronted with weak lensing data at small accelerations

Abstract

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. We tested whether or not the AeST model is in conflict with observations using a recent analysis of data for weak gravitational lensing. We solved the equations of motion of the AeST model, analyzed the solutions' behavior, and compared the results to observational data. 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.

18 pages, 14 figures, forthcoming in A&A

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Cited by in corpus (10)

• Radial acceleration relation of galaxies with joint kinematic and weak-lensing data
• Dynamical system analysis of cosmological evolution in the Aether scalar tensor theory
• Aether scalar tensor theory: Hamiltonian Formalism
• Superfluid dark matter in tension with weak gravitational lensing data
• A new scale in the quasi-static limit of Aether Scalar Tensor Theory
• Stealth black holes in Aether Scalar Tensor theory
• Buchdahl bound, photon ring, ISCO and radial acceleration in Einstein-æther theory
• Sudden cosmological singularities in Aether scalar-tensor theories
• Peculiar dark matter halos inferred from gravitational lensing as a manifestation of modified gravity
• The radial metric function does not identify null surfaces