Abstract
Well known scaling laws among the structural properties of the dark and the luminous matter in disc systems are too complex to be arisen by two inert components that just share the same gravitational field. This brings us to critically focus on the 30-year-old paradigm, that, resting on a priori knowledge of the nature of Dark Matter (DM), has led us to a restricted number of scenarios, especially favouring the collisionless Λ Cold Dark Matter one. Motivated by such observational evidence, we propose to resolve the dark matter mystery by following a new Paradigm: the nature of DM must be guessed/derived by deeply analyzing the properties of the dark and luminous mass distribution at galactic scales. The immediate application of this paradigm leads us to propose the existence of a direct interaction between Dark and Standard Model particles, which has finely shaped the inner regions of galaxies.
Highlights
The immediate application of this paradigm leads us to propose the existence of a direct interaction between Dark and Standard Model particles, which has finely shaped the inner regions of galaxies
The mass distribution in Spirals is largely dominated by a dark component as it is evident from their kinematics and their other tracers of the mass distribution
With the caveat of an population of primordial Black Holes, the Dark Matter is thought to be made of massive particles that interact with Standard Model particles and with themselves mainly via Gravitation: the non-gravitational interactions are believed to have cross sections very small and no role in the building of the cosmological structures
Summary
The mass distribution in Spirals is largely dominated by a dark component as it is evident from their kinematics and their other tracers of the mass distribution (e.g., see [1]). Everything starts by adopting the Paradigm according to which strong theoretical arguments on how nature could be made lead us to the correct cosmological scenario and, in turn, to the actual dark particle in which the detectability via experiments and astrophysical observations results as a bonus of the same arguments above. This Paradigm has pointed especially to a stable Weakly. The plan of this work is the following: we will lead the reader, by presenting further evidences, towards our new Paradigm for Dark matter.
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