Fuzzy dark matter black holes and droplets

Abstract

We consider the possibility of having Dark Matter (DM) black holes motivated by the Einasto density profile. This generalizes both the noncommutative mini black hole model and allows DM to enter as the matter constituent which makes up the black hole. We show that it is possible to construct a black hole solution for each value of the Einasto index and for different values of the mass parameter, provided that the we work with the energy-momentum tensor of an anisotropic fluid. In particular, we achieve that by first considering the equation of state (EOS) $p_r=-\rho$. It turns out that the corresponding black hole solution exhibits a horizon structure similar to that of a Reissner-Nordström black hole and the central singularity is replaced by a regular de Sitter core. We also show that if the previous EOS is replaced by a nonlocal one, it is possible to construct a self-gravitating fuzzy DM droplet but also in this case, the radial pressure is negative. Finally, we contemplate scenarios of different dark matter black holes with moderate mass values which could have formed in galaxies. In particular, we probe the possibility whether such black holes could also be the central galactic objects.

arXiv comment20 pages, 15 figures

References in corpus (68)

• The Structure of Cold Dark Matter Halos
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Unified Schemes for Radio-Loud Active Galactic Nuclei
• Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• The Bardeen Model as a Nonlinear Magnetic Monopole
• Noncommutative geometry inspired Schwarzschild black hole
• The Diversity and Similarity of Simulated Cold Dark Matter Halos
• Sound Speeds, Cracking and Stability of Self-Gravitating Anisotropic Compact Objects
• Gravitational Vacuum Condensate Stars
• Stellar Orbits Around the Galactic Center Black Hole
• TOPICAL REVIEW: General relativistic boson stars
• On the shape of the light profiles of early-type galaxies
• Analytical Models For Galactic Nuclei
• Noncommutative Black Holes, The Final Appeal To Quantum Gravity: A Review
• Empirical models for Dark Matter Halos. I. Nonparametric Construction of Density Profiles and Comparison with Parametric Models
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• The redshift dependence of the structure of massive LCDM halos
• HST photometry of dwarf elliptical galaxies in Coma, and an explanation for the alleged structural dichotomy between dwarf and bright elliptical galaxies
• Regular electrically charged structures in Nonlinear Electrodynamics coupled to General Relativity
• Quantifying the heart of darkness with GHALO - a multi-billion particle simulation of our galactic halo
• How to tell a gravastar from a black hole
• Gravitational Bose-Einstein condensation in the kinetic regime
• Cosmological term as a source of mass
• Regular Black Holes and Topology Change
• Quantum Compositeness of Gravity: Black Holes, AdS and Inflation
• No-hair theorem for Black Holes in Astrophysical Environments
• Black Hole's 1/N Hair
• Hawking radiation, the Stefan-Boltzmann law, and unitarization
• Spherically symmetric space-time with the regular de Sitter center
• Noncommutative geometry inspired dirty black holes
• Rotation Curve and Mass Distribution in the Galactic Center --- From Black Hole to Entire Galaxy ---
• Empirical Models for Dark Matter Halos. II. Inner profile slopes, dynamical profiles, and rho/sigma^3
• Regular black holes: Electrically charged solutions, Reissner-Nordström outside a de Sitter core
• On the estimation of the Local Dark Matter Density using the rotation curve of the Milky Way
• Equilibrium configurations from gravitational collapse
• Understanding the shape of the halo-mass and galaxy-mass cross-correlation functions
• Non-singular quantum-inspired gravitational collapse
• Circular geodesics and accretion disks in Janis-Newman-Winicour and Gamma metric
• Surface Tension and Negative Pressure Interior of a Non-Singular `Black Hole'
• Analytical properties of Einasto dark matter haloes
• Dark matter in elliptical galaxies: I. Is the total mass density profile of the NFW form or even steeper?
• On the core-halo distribution of dark matter in galaxies
• Scrambling in the Black Hole Portrait
• Nonlocal Equation of State in Anisotropic Static Fluid Spheres in General Relativity
• Improved Modeling of the Mass Distribution of Disk Galaxies by the Einasto Halo Model
• The black hole quantum atmosphere
• Dark matter in elliptical galaxies
• Landau-Ginzburg Limit of Black Hole's Quantum Portrait: Self Similarity and Critical Exponent
• K$\alpha$ iron line profile from accretion disks around regular and singular exotic compact objects
• Hinting a dark matter nature of Sgr A* via the S-stars
• Spherical galaxy models with power law logarithmic slope
• Nonlocal Equation of State in General Relativistic Radiating Spheres
• Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
• A non commutative model for a mini black hole
• A model for a dark matter core at the galactic center
• Black Hole Macro-Quantumness
• Structure of the Spherical Black Hole Interior
• Fuzziness at the horizon
• Maximal extension of the Schwarzschild spacetime inspired by noncommutative geometry
• The Black Hole Interior in Quantum Gravity
• Discovering the interior of black holes
• A toy model for a baby universe inside a black hole
• No asymmetric outflows from Sagittarius A* during the pericenter passage of the gas cloud G2
• Perturbing microscopic black holes inspired by noncommutativity
• An upper limit to the central density of dark matter haloes from consistency with the presence of massive central black holes
• Compact objects from gravitational collapse: an analytical toy model

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• Charged Fuzzy Dark Matter Black Holes
• Interaction of a black hole with scalar field in cosmology background
• A comment on singular and non-singular black holes using the Gaussian distribution