Milky Way and M31 rotation curves: $\Lambda$CDM vs. MOND
Astrophysics of Galaxies
2022-06-02 v2 General Relativity and Quantum Cosmology
Abstract
We analyze the existing rotation-curve data of the Milky Way and M31 galaxies that extends to very large distances and low accelerations. We find a systematic downward trend in the weak acceleration (large distances) segment of the radial acceleration. A similar downward trend has been noticed in the CDM EAGLE simulation, while the deviation from the generic MOND prediction would need to be ascribed to an external field effect, or possibly a post facto selected acceleration function .
Cite
@article{arxiv.2201.06034,
title = {Milky Way and M31 rotation curves: $\Lambda$CDM vs. MOND},
author = {De-Chang Dai and Glenn Starkman and Dejan Stojkovic},
journal= {arXiv preprint arXiv:2201.06034},
year = {2022}
}
Comments
4 figures, 8 pages, accepted by PRD