Cosmic radiation backgrounds from primordial black holes

Abstract

Recent measurements of the cosmic X-ray and radio backgrounds (CXB/CRB, respectively) obtained with Chandra and ARCADE2 report signals in excess of those expected from known sources, suggesting the presence of a yet undiscovered population of emitters. We investigate the hypothesis that such excesses are due to primordial black holes (PBHs) which may constitute a substantial fraction of dark matter (DM). We present a novel semi-analytical model which predicts X-ray and radio emission due to gas accretion onto PBHs, assuming that they are distributed both inside DM halos and in the intergalactic medium (IGM). Our model includes a self-consistent treatment of heating/ionization feedback on the surrounding environment. We find that (i) the emission from PBHs accreting in the IGM is subdominant at all times ($1\%\le I_{\mathrm{IGM}}/I_{\mathrm{tot}}\le 40\%$); (ii) most of the CXB/CRB emission comes from PBHs in DM mini-halos ($M_h\le 10^6{M}_{\odot }$) at early epochs ($z>6$). While a small fraction ($f_{\mathrm{PBH}}\simeq 0.3\%$) of DM in the form of PBHs can account for the total observed CXB excess, the CRB one cannot be explained by PBHs. Our results set the strongest existing constraint on $f_{\mathrm{PBH}}\le 3\times 10^{-4}(30/M_{\mathrm{PBH}})$ in the mass range $1-1000M_{\odot }$. Finally, we comment on the implications of our results on the global ${\mathrm{H}}_{\mathrm{I}}$ 21cm signal.

arXiv comment13 pages, 10 figures, 2 tables. Accepted for publication in MNRAS

References in corpus (75)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• A Universal Density Profile from Hierarchical Clustering
• Profiles of dark haloes: evolution, scatter, and environment
• Hot Accretion Flows Around Black Holes
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• In the Beginning: The First Sources of Light and the Reionization of the Universe
• Did LIGO detect dark matter?
• A fundamental plane of black hole activity
• An absorption profile centred at 78 megahertz in the sky-averaged spectrum
• Primordial Black Holes as Dark Matter
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• Halos and galaxies in the standard cosmological model: results from the Bolshoi simulation
• Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
• Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
• Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• Primordial Black Holes as Dark Matter: Recent Developments
• A universal radio/X-ray correlation in low/hard state black hole binaries
• Primordial Black Holes as a dark matter candidate
• Halo concentrations in the standard LCDM cosmology
• The clustering of massive Primordial Black Holes as Dark Matter: measuring their mass distribution with Advanced LIGO
• Concentration, Spin and Shape of Dark Matter Haloes: Scatter and the Dependence on Mass and Environment
• Possible interaction between baryons and dark-matter particles revealed by the first stars
• Primordial black holes from single field models of inflation
• The Chandra COSMOS Legacy survey: overview and point source catalog
• Cosmic microwave background limits on accreting primordial black holes
• The merger rate of primordial-black-hole binaries
• The Chandra COSMOS Survey, I: Overview and Point Source Catalog
• Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
• Constraints on Earth-mass primordial black holes from OGLE 5-year microlensing events
• Absolute measurement of the unresolved cosmic X-ray background in the 0.5-8 keV band with Chandra
• The Mass-Concentration-Redshift Relation of Cold and Warm Dark Matter Halos
• The Space Density of Compton Thick AGN and the X-ray Background
• CMB bounds on disk-accreting massive Primordial Black Holes
• Primordial Black Holes as Generators of Cosmic Structures
• Cosmic microwave background bounds on primordial black holes including dark matter halo accretion
• Primordial Black Holes as Dark Matter: The Power Spectrum and Evaporation of Early Structures
• Resolving the Radio Source Background: Deeper Understanding Through Confusion
• The flattening of the concentration-mass relation towards low halo masses and its implications for the annihilation signal boost
• Signatures of X-rays in the early Universe
• X-ray gas density profile of clusters of galaxies from the universal dark matter halo
• Modeling the Radio Background from the First Black Holes at Cosmic Dawn: Implications for the 21 cm Absorption Amplitude
• Signature of Excess Radio Background in the 21-cm Global Signal and Power Spectrum
• The Radiative Efficiency of Hot Accretion Flows
• LIGO gravitational wave detection, primordial black holes and the near-IR cosmic infrared background anisotropies
• Updated Constraints on Asteroid-Mass Primordial Black Holes as Dark Matter
• Consistent modelling of the meta-galactic UV background and the thermal/ionization history of the intergalactic medium
• What does the first highly-redshifted 21-cm detection tell us about early galaxies?
• Constraining Baryon--Dark Matter Scattering with the Cosmic Dawn 21-cm Signal
• The end of the MACHO era- revisited: new limits on MACHO masses from halo wide binaries
• Early Structure Formation in $\Lambda$PBH Cosmologies
• Searching for Primordial Black Holes in the radio and X-ray sky
• The Evolution of Primordial Black Holes and their Final Observable Spins
• Secondary ionization and heating by fast electrons
• Evidence for primordial black hole dark matter from LIGO/Virgo merger rates
• Constraining Primordial Black Holes with the EDGES 21-cm Absorption Signal
• The Dynamical State and Mass-Concentration Relation of Galaxy Clusters
• The Chandra COSMOS legacy survey: Energy Spectrum of the Cosmic X-ray Background and constraints on undetected populations
• On the merger rate of primordial black holes: effects of nearest neighbours distribution and clustering
• Resolving the unresolved cosmic X-ray background in the Chandra Deep Fields
• Constraining the primordial black hole abundance with 21cm cosmology
• Effective Screening due to Minihalos During the Epoch of Reionization
• The black hole fundamental plane from a uniform sample of radio and X-ray emitting broad line AGNs
• Multi-wavelength astronomical searches for primordial black holes
• Halo Substructure Boosts to the Signatures of Dark Matter Annihilation
• Exploring the high-redshift PBH-$\Lambda$CDM Universe: early black hole seeding, the first stars and cosmic radiation backgrounds
• Illuminating the dark ages: Cosmic backgrounds from accretion onto primordial black hole dark matter
• Constraining Primordial Black Holes with Dwarf Galaxy Heating
• The Radio Scream from Black Holes at Cosmic Dawn: A Semi-Analytic Model for the Impact of Radio Loud Black-Holes on the 21 cm Global Signal
• Limits on the high redshift growth of massive black holes
• Late Gas accretion onto Primordial Minihalos: a Model for Leo T, Dark Galaxies and Extragalactic High-Velocity Clouds
• 21-cm constraints on spinning primordial black holes
• Revisiting the constraints on primordial black hole abundance with the isotropic gamma ray background
• Accretion History of AGN II: Constraints on AGN Spectral Parameters using the Cosmic X-ray Background

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