The mass distribution in Spirals

Abstract

In the past years a wealth of observations has unraveled the structural properties of the Dark and Luminous mass distribution in spirals. These have pointed out to an intriguing scenario not easily explained by present theories of galaxy formation. The investigation of individual and coadded objects has shown that the spiral rotation curves follow, from their centers out to their virial radii, a Universal profile (URC) that arises from the tuned combination of a stellar disk and of a dark halo. The importance of the latter component decreases with galaxy mass. Individual objects, on the other hand, have clearly revealed that the dark halos encompassing the luminous discs have a constant density core. This resulting observational scenario poses important challenges to presently favored theoretical $\Lambda$CDM Cosmology.

Version matching the Proceedings of the CRAL-IPNL conference "Dark Energy and Dark Matter", Lyon, 2008, references updated, an useful link provided

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Cited by in corpus (10)

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• The mass of the dark matter particle from theory and observations
• Quantum WDM fermions and gravitation determine the observed galaxy structures
• Equation of state, universal profiles, scaling and macroscopic quantum effects in Warm Dark Matter galaxies
• Deflection of light by wormholes and its shadow due to dark matter within modified symmetric teleparallel gravity formalism
• The density profiles of Dark Matter halos in Spiral Galaxies
• Warm Dark Matter Galaxies with Central Supermassive Black-Holes
• Hollow cores in Warm Dark Matter halos from the Vlasov-Poisson equation
• Estimation of the Mass of Dark Matter Using the Observed Mass Profiles of Late-Type Galaxies
• Warm dark matter sterile neutrinos in electron capture and beta decay spectra