Solving the Cusp-Core Problem with a Novel Scalar Field Dark Matter

Abstract

Matos, Guzman and Nunez proposed a model of galactic halo based on an exponential-potential scalar field that could induce a rotation curve that is constant for all radii. We demonstrate that with suitable boundary conditions, such scalar field dark matter (SDM) can not only produce the observed constant rotation curve at large radius but also give rise to the correct power-law scaling near the galactic core region. This solves the existing cusp-core problem faced by the conventional cold dark matter (CDM) model.

8 pages and 6 figures

References in corpus (9)

• The Core-Cusp Problem
• Stellar Feedback in Dwarf Galaxy Formation
• Cosmological puzzle resolved by stellar feedback in high redshift galaxies
• Ultra-Light Scalar Fields and the Growth of Structure in the Universe
• Scalar Dark Matter Effects in Higgs and Top Quark Decays
• Halo density reduction by baryonic settling?
• Halos of Unified Dark Matter Scalar Field
• Comments on "Modeling Galaxy Halos Using Dark Matter with Pressure"
• Remarks On The Spherical Scalar Field Halo In Galaxies

Cited by in corpus (11)

• Are black holes a serious threat to scalar field dark matter models?
• Brief History of Ultra-light Scalar Dark Matter Models
• Schwarzschild scalar wigs: spectral analysis and late time behavior
• Ruling Out Bosonic Repulsive Dark Matter in Thermal Equilibrium
• Short Review of the main achievements of the Scalar Field, Fuzzy, Ultralight, Wave, BEC Dark Matter model
• Interactions of Astrophysical Neutrinos with Dark Matter: A model building perspective
• Constraining warm dark matter mass with cosmic reionization and gravitational wave
• Astronomy with energy dependent flavour ratios of extragalactic neutrinos
• Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data
• An f(R) model for dark matter: rotation curves and gravitational lensing
• Gravitational Waves from Gauge Quanta Produced during Inflation