2013/05/01 by Zhe Chang, Ming-Hua Li, Xin Li +2
Physics and Astronomy · #Advanced Differential Geometry Research #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #astro-ph.GA #gr-qc
paper · pdf · doi:10.1140/epjc/s10052-013-2447-1
published as Eur. Phys. J. C (2013) 73:2447 · 15 pages, 2 figures, 2 tables
openalex publication_date 2013/05/01 · arxiv created 2013/05/26 · arxiv updated 2013/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The observations on galaxy rotation curves show significant discrepancies from the Newtonian theory. This issue could be explained by the effect of the anisotropy of the spacetime. Conversely, the spacetime anisotropy could also be constrained by the galaxy rotation curves. Finsler geometry is a kind of intrinsically anisotropic geometry. In this paper, we study the effect of the spacetime anisotropy at the galactic scales in the Finsler spacetime. It is found that the Finslerian model has close relations with the Milgrom's MOND. By performing the best-fit procedure to the galaxy rotation curves, we find that the anisotropic effects of the spacetime become significant when the Newtonian acceleration \(GM/r2\) is smaller than the critical acceleration \(a0\). Interestingly, the critical acceleration \(a0\), although varies between different galaxies, is in the order of magnitude \(cH0/2π∼ 10-10 \rmm s-2\).