Cored Dark Matter halos in the Cosmic Neutrino Background

Abstract

We study the impact of the interaction between DM and the cosmic neutrino background on the evolution of galactic dark matter halos. The energy transfer from the neutrinos to the dark matter can heat the center of the galaxy and make it cored. This effect is efficient for the small galaxies such as the satellite galaxies of the Milky Way and we can put conservative constraint on the non-relativistic elastic scattering cross section as ${\sigma }_{\chi \nu }\lesssim 10^{-31}{\mathrm{cm}}^2$ for 0.1 keV dark matter and 0.1 eV neutrino.

arXiv comment7 pages, 5 figures

References in corpus (37)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• Concentrations of Dark Halos from their Assembly Histories
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• The Waning of the WIMP? A Review of Models, Searches, and Constraints
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Extragalactic Science, Cosmology and Galactic Archaeology with the Subaru Prime Focus Spectrograph (PFS)
• WIMP dark matter candidates and searches - current status and future prospects
• New Constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-$\alpha$ forest data
• The Observed properties of Dark Matter on small spatial scales
• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Properties of spherical galaxies and clusters with an NFW density profile
• Self-Interacting Dark Matter Halos and the Gravothermal Catastrophe
• Gravitational clustering of relic neutrinos and implications for their detection
• Reducing the $H_0$ and ${\sigma }_8$ tensions with Dark Matter-neutrino interactions
• Gravothermal collapse of isolated self-interacting dark matter haloes: N-body simulation versus the fluid model
• Constraining Dark Matter-Neutrino Interactions using the CMB and Large-Scale Structure
• Neutrino Non-Standard Interactions: A Status Report
• Supermassive Black Holes from Ultra-Strongly Self-Interacting Dark Matter
• Constraining Dissipative Dark Matter Self-Interactions
• Accelerated core collapse in tidally stripped self-interacting dark matter halos
• Gravothermal Collapse of Self-Interacting Dark Matter Halos and the Origin of Massive Black Holes
• Formation and Evolution of the Self-Interacting Dark Matter Halos
• Non-thermal Production of Neutralino Cold Dark Matter from Cosmic String Decays
• Imaging Galactic Dark Matter with High-Energy Cosmic Neutrinos
• Neutrino Oscillations in Dark Backgrounds
• Light Dark Matter from Inflaton Decay
• Constraining dark matter-neutrino interactions with IceCube-170922A
• Hints of dark matter-neutrino interactions in Lyman-$\alpha$ data
• Propagation of high-energy neutrinos in a background of ultralight scalar dark matter
• Probing the Fundamental Nature of Dark Matter with the Large Synoptic Survey Telescope
• Non-Thermal Dark Matter from Cosmic Strings
• Prior dependence of cosmological constraints on dark matter-radiation interactions
• Escalating core formation with dark matter self-heating
• Confusing the extragalactic neutrino flux limit with a neutrino propagation limit
• Dispersion of neutrinos in a medium
• Magnetic dipole moments for composite dark matter