Dark Matter in galaxies: leads to its Nature

TL;DR

This paper discusses the universal rotation curve profiles of spiral galaxies, highlighting challenges to the standard $ ext{Lambda}$CDM cosmology based on recent observations of dark and luminous mass distributions.

Contribution

It presents new insights into the universal rotation curves of spirals and their implications for dark matter distribution and cosmological models.

Findings

Universal rotation curve profile from galaxy centers to virial radii

Tuned combination of stellar disk and dark halo mass distributions

Challenges to $ ext{Lambda}$CDM cosmology from mass modeling

Abstract

Recent observations have revealed the structural properties of the dark and luminous mass distribution in spirals. These results led to the vision of a new and amazing scenario. The investigation of single and coadded objects has shown that the rotation curves of spirals follow, from their centers out to their virial radii, an universal profile that implies a tuned combination of their stellar disk and dark halo mass distributions. This, alongside with accurate mass modeling of individual galaxies, poses important challenges to the presently theoretically favored $\Lambda$CDM Cosmology.