Rotational velocity curves in the Milky Way as a test of modified gravity

2014/11/30 by J. W. Moffat, Viktor T. Toth, V. T. Toth · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Angular velocity #Astrophysics #Classical mechanics #Cosmology and Gravitation Theories #Dark matter #Dark matter halo #Galaxy #Galaxy rotation curve #Geometry #Geophysics and Gravity Measurements #Halo #Milky Way #Modified Newtonian dynamics #Physics #Scalar (mathematics) #Solar and Space Plasma Dynamics #Velocity vector #astro-ph.GA #gr-qc

paper · pdf · doi:10.1103/physrevd.91.043004

published as Phys. Rev. D 91, 043004 (2015) · 5 pages, 1 figure; reformatted, misprints corrected

arxiv created 2014/12/11 · openalex publication_date 2015/02/17 · arxiv updated 2015/03/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Galaxy rotation curves determined observationally out to a radius well beyond the galaxy cores can provide a critical test of modified gravity models without dark matter. The predicted rotational velocity curve obtained from scalar-vector-tensor gravity is in excellent agreement with data for the Milky Way without a dark matter halo, with a mass of 5\ifmmode×\else\texttimes\fi10¹⁰M_\ensuremath\bigodot. The velocity rotation curve predicted by modified Newtonian dynamics does not agree with the data.

Citations

• A modification of the Newtonian dynamics as a possible alternative to the hidden mass hypothesis
• The Bullet Cluster 1E0657-558 evidence shows modified gravity in the absence of dark matter
• Structure Growth and the CMB in Modified Gravity (MOG)
• Exact Solutions and Approximations of Mond Fields of Disk Galaxies

Cited by

• Testing modified gravity theory in the Milky Way
• A Simple Model for Explaining Galaxy Rotation Curves
• Enigmatic velocity dispersions of ultradiffuse galaxies in light of modified gravity theories and the radial acceleration relation