Destruction of small-scale dark matter clumps in the hierarchical structures and galaxies

Abstract

A mass function of small-scale dark matter clumps is calculated in the standard cosmological scenario with an inflationary-produced primordial fluctuation spectrum and with a hierarchical clustering. We take into account the tidal destruction of clumps at early stages of structure formation starting from a time of clump detachment from the Universe expansion. Only a small fraction of these clumps, ~0.1-0.5%, in each logarithmic mass interval $\Delta \log M\sim 1$ survives the stage of hierarchical clustering. The surviving clumps can be disrupted further in the galaxies by tidal interactions with stars. We performed the detailed calculations of the tidal destruction of clumps by stars in the Galactic bulge and halo and by the Galactic disk itself. It is shown that the Galactic disc provides the dominant contribution to the tidal destruction of small-scale clumps outside the bulge. The results obtained are crucial for calculations of the dark matter annihilation signal in the Galaxy.

11 pages, 7 figures. Minor changes to reflect referee's comments. Accepted for publication in Phys. Rev. D

References in corpus (2)

• Earth-mass dark-matter haloes as the first structures in the early Universe
• The first WIMPy halos

Cited by in corpus (79)

• Not so lumpy after all: modeling the depletion of dark matter subhalos by Milky Way-like galaxies
• Galaxy Formation Theory
• What mass are the smallest protohalos?
• Improved constraints on the primordial power spectrum at small scales from ultracompact minihalos
• Effects of cold dark matter decoupling and pair annihilation on cosmological perturbations
• Characterization of subhalo structural properties and implications for dark matter annihilation signals
• Small-scale structure of fuzzy and axion-like dark matter
• Limits on Dark Matter Annihilation Signals from the Fermi LAT 4-year Measurement of the Isotropic Gamma-Ray Background
• Reheating Effects in the Matter Power Spectrum and Implications for Substructure
• Early supersymmetric cold dark matter substructure
• A profile in FIRE: resolving the radial distributions of satellite galaxies in the Local Group with simulations
• Full calculation of clumpiness boost factors for antimatter cosmic rays in the light of Lambda-CDM N-body simulation results
• Dark Matter Annihilation in Substructures Revised
• The survival and disruption of CDM micro-haloes: implications for direct and indirect detection experiments
• Galactic Substructure and Dark Matter Annihilation in the Milky Way Halo
• Galactic Substructure and Direct Detection of Dark Matter
• Gamma-ray Signal from Earth-mass Dark Matter Microhalos
• The Dark Matter Annihilation Boost from Low-Temperature Reheating
• Gravitational Lensing Signatures of Axion Dark Matter Minihalos in Highly Magnified Stars
• Remnants of dark matter clumps
• Dark Photon Stars: Formation and Role as Dark Matter Substructure
• Density profiles of ultracompact minihalos: Implications for constraining the primordial power spectrum
• A new probe of the small-scale primordial power spectrum: astrometric microlensing by ultracompact minihalos
• Small-scale clumps of dark matter
• Clumpiness of Dark Matter and Positron Annihilation Signal: Computing the odds of the Galactic Lottery
• Revealing dark matter substructure with anisotropies in the diffuse gamma-ray background
• Dark Matter Subhalos In the Fermi First Source Catalog
• Determining the WIMP mass using direct detection experiments
• The effect of quark interactions on dark matter kinetic decoupling and the mass of the smallest dark halos
• Investigating dark matter substructure with pulsar timing: I. Constraints on ultracompact minihalos
• Tidal streams from axion miniclusters and direct axion searches
• The Gamma-Ray-Flux Probability Distribution Function from Galactic Halo Substructure
• On mini-halo encounters with stars
• Ultra-cold WIMPs: relics of non-standard pre-BBN cosmologies
• Proper motion of gamma-rays from microhalo sources
• Searching For Dark Matter Subhalos In the Fermi-LAT Second Source Catalog
• Primordial dark matter halos from fifth forces
• Angular Signatures of Annihilating Dark Matter in the Cosmic Gamma-Ray Background
• Tidal Destruction of The First Dark Microhalos
• Dark matter subhaloes as gamma-ray sources and candidates in the first Fermi-LAT catalogue
• Physical laboratory at the center of the Galaxy
• Number Counts and Non-Gaussianity
• Superdense cosmological dark matter clumps
• Tidal deformability of boson stars and dark matter clumps
• Is the dark matter interpretation of the EGRET gamma excess compatible with antiproton measurements?
• Ultracompact minihalos as probes of inflationary cosmology
• Looking for MACHOs in the Spectra of Fast Radio Bursts
• Astrometric Microlensing by Local Dark Matter Subhalos
• Destruction of axion miniclusters in the Galaxy
• Analysis of galactic tides and stars on CDM microhalos
• Angular Signatures of Dark Matter in the Diffuse Gamma Ray Background
• Unidentified Gamma-ray Sources as Targets for Indirect Dark Matter Detection with the Fermi-Large Area Telescope
• Evolution of dark matter microhalos through stellar encounters
• Tidal evolution of dark matter annihilation rates in subhalos
• Cosmic-ray antiproton constraints on light singlino-like dark matter candidates
• Can the dark matter halo be a collisionless ensemble of axion stars?
• Investigating dark matter substructure with pulsar timing: II. Improved limits on small-scale cosmology
• Galactic Substructure and Energetic Neutrinos from the Sun and the Earth
• Are Lines From Unassociated Gamma-Ray Sources Evidence For Dark Matter Annihilation?
• Anisotropy of dark matter annihilation with respect to the Galactic plane
• Antimatter cosmic rays from dark matter annihilation: First results from an N-body experiment
• Hunting for dark halo substructure using submilliarcsecond-scale observations of macrolensed radio jets
• Dark Matter Halos from the Inside Out
• Annihilations of superheavy dark matter in superdense clumps
• Primordial black hole dark matter in the presence of p-wave WIMP annihilation
• Constraints on cosmic strings from ultracompact minihalos
• Boosting small-scale structure via primordial black holes and implications for sub-GeV dark matter annihilation
• Heating of galactic gas by dark matter annihilation in ultracompact minihalos
• Neutron star mass in dark matter clumps
• Determining Supersymmetric Parameters With Dark Matter Experiments
• CMB and 21cm bounds on early structure formation boosted by primordial black hole entropy fluctuations
• Flaring of tidally compressed dark-matter clumps
• Interaction of clumpy dark matter with interstellar medium in astrophysical systems
• Can the dark matter annihilation signal be significantly boosted by substructures?
• Mass limits for heavy neutrinos
• The dark connection between the EGRET excess of diffuse Galactic gamma rays, the Canis Major dwarf, the Monoceros ring, the INTEGRAL 511 keV annihilation line, the gas flaring and the Galactic rotation curve
• SUSY dark matter annihilation in the Galactic halo
• Antimatter and Gamma-rays from Dark Matter Annihilation
• Through a Mini Halo, Darkly