2003/04/30 by Federico Piazza, C. Marinoni, Christian Marinoni · 35 citations
Physics and Astronomy · #Astronomy #Astrophysics #Baryon #Cosmology and Gravitation Theories #Dark matter #Dark matter halo #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy rotation curve #Gravitation #Gravitational potential #Halo #Modified Newtonian dynamics #Particle physics #Physics #Scientific Research and Discoveries #Yukawa potential #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.91.141301
published in Physical Review Letters 91(14), 141301 (American Physical Society) · 4 pages, 2 figures, final version
openalex publication_date 2003/10/02 · arxiv created 2003/10/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a phenomenological model where the gravitational interaction between dark matter and baryons is suppressed on small, subgalactic scales. We describe the gravitational force by adding a Yukawa contribution to the standard Newtonian potential and show that this interaction scheme is effectively suggested by the available observations of the inner rotation curves of small mass galaxies. Besides helping in interpreting the cuspy profile of dark matter halos observed in N-body simulations, this potential regulates the quantity of baryons within halos of different masses.