2017/07/04 by P. Salucci, Paolo Salucci, N. Turini +3 · 1 citation
Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #astro-ph.CO #astro-ph.GA
paper · pdf · doi:10.48550/arxiv.1707.01059
21 pages 12 figures
arxiv created 2017/07/04 · openalex publication_date 2017/07/04 · arxiv updated 2017/07/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The more we go deep into the knowledge of the dark component which embeds the stellar component of galaxies, the more we realize the profound interconnection between them. We show that the scaling laws among the structural properties of the dark and luminous matter in galaxies are too complex to derive from two inert components that just share the same gravitational field. In this paper we review the 30 years old paradigm of collisionless dark matter in galaxies. We found that their dynamical properties show strong indications that the dark and luminous components have interacted in a more direct way over a Hubble Time. The proofs for this are the presence of central cored regions with constant DM density in which their size is related with the disk lenghtscales. Moreover we find that the quantity ρDM(r,L,RD) ρ_⋆ (r,L,RD) shows, in all objects, peculiarities very hardly explained in a collisionless DM scenario.