The cosmic radio background from 150 MHz--8.4 GHz, and its division into AGN and star-forming galaxy flux

Abstract

We present a revised measurement of the extra-galactic background light (EBL) at radio frequencies based on a near complete compendium of radio source counts. We present the radio-EBL at 150 MHz, 325 MHz, 610 MHz, 1.4 GHz, 3 GHz, 5 GHz, and 8.4 GHz. In all cases the contribution to the radio-EBL, per decade of flux, exhibits a two-humped distribution well matched to the AGN and star-forming galaxy (SFG) populations, and with each population contributing roughly equal energy. Only at 3 GHz are the source count contributions to the EBL fully convergent, and hence we report empirical lower limits to the radio-EBL in the remaining bands. Adopting predictions from the SHARK semi-analytic model for the form of the SFG population, we can fit the fainter source counts providing measurements of the total contribution to the radio-EBL for the SFG and the AGN populations separately. This constitutes an empirically constrained model-dependent measurement for the SFG contribution, but a fully empirical measurement of the AGN contribution. Using the {\sc ProSpect} spectral energy distribution code we can model the UV-optical-infrared-mm-radio SFG EBL at all frequencies from the cosmic star-formation history and the adoption of a Chabrier initial mass function. However, significant discrepancy remains ($5\times$) between our source-count estimates of the radio-EBL and the direct measurements reported from the ARCADE-2 experiment. We can rule out a significant missing discrete source radio population and suggest that the cause of the high ARCADE-2 radio-EBL values may need to be sought either in the foreground subtraction or as a yet unknown diffuse component in the radio sky.

References in corpus (95)

• Cosmic Star Formation History
• CIGALE: a python Code Investigating GALaxy Emission
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey I: A low-frequency extragalactic catalogue
• Modeling the Extragalactic Background Light from Stars and Dust
• A low level of extragalactic background light as revealed by gamma-rays from blazars
• A Two-Parameter Model for the Infrared/Submillimeter/Radio Spectral Energy Distributions of Galaxies and AGN
• The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release
• A semi-empirical simulation of the extragalactic radio continuum sky for next generation radio telescopes
• ARCADE 2 Measurement of the Extra-Galactic Sky Temperature at 3-90 GHz
• Radio and Millimeter Continuum Surveys and their Astrophysical Implications
• Shark: introducing an open source, free and flexible semi-analytic model of galaxy formation
• LOFAR 150-MHz observations of the Boötes field: Catalogue and Source Counts
• Resolving the Radio Source Background: Deeper Understanding Through Confusion
• A Quick Look at the $3$GHz Radio Sky I. Source Statistics from the Very Large Array Sky Survey
• GAMA/G10-COSMOS/3D-HST: The 0<z<5 cosmic star-formation history, stellar- and dust-mass densities
• The extragalactic background light, the Hubble constant, and anomalies: conclusions from 20 years of TeV gamma-ray observations
• Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S
• The Star Formation History of the Universe as Revealed by Deep Radio Observations
• The Rapid ASKAP Continuum Survey Paper II: First Stokes I Source Catalogue Data Release
• The Phoenix Deep Survey: The 1.4 GHz microJansky catalogue
• A $\gamma$-ray determination of the Universe's star-formation history
• Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars
• ProSpect: Generating Spectral Energy Distributions with Complex Star Formation and Metallicity Histories
• New synthesis models of consistent extragalactic background light over cosmic time
• Search for $\gamma$-ray line signals from dark matter annihilations in the inner Galactic halo from ten years of observations with H.E.S.S
• The First Detections of the Extragalactic Background Light at 3000, 5500, and 8000A (I): Results
• Extra-galactic background light measurements from the far-UV to the far-IR from deep ground and space-based galaxy counts
• Deep multi-frequency radio imaging in the Lockman Hole using the GMRT and VLA: I. The nature of the sub-mJy radio population
• A deep VLA survey at 6 cm in the Lockman Hole
• The Tiered Radio Extragalactic Continuum Simulation (T-RECS)
• The infrared-radio correlation of star-forming galaxies is strongly M${}_{\star }$-dependent but nearly redshift-invariant since z$\sim$4
• A catalogue of micro-Jy radio sources in northern legacy fields
• Galaxy Evolution in the Radio Band: The Role of Starforming Galaxies and Active Galactic Nuclei
• Radio Observations of the Hubble Deep Field South Region II: The 1.4 GHz Catalogue and Source Counts
• A Deep VLA survey at 20cm of the ISO ELAIS survey regions
• From the far-ultraviolet to the far-infrared -- galaxy emission at $0\le z\le 10$ in the Shark semi-analytic model
• Discovery of Magnetic Fields Along Stacked Cosmic Filaments as Revealed by Radio and X-Ray Emission
• Radio Observations of the 13hr XMM/ROSAT Deep X-ray Survey Area
• The Spectrum of the Universe
• Anomalous Flux in the Cosmic Optical Background Detected With New Horizons Observations
• Deep 3 GHz Number Counts from a P(D) Fluctuation Analysis
• Optically Faint Microjansky Radio Sources
• The contribution of the Unresolved Extragalactic Radio Sources to the Brightness Temperature of the sky
• Galaxy And Mass Assembly: The 1.4GHz SFR indicator, SFR-M* relation and predictions for ASKAP-GAMA
• New Horizons Observations of the Cosmic Optical Background
• A dark matter interpretation for the ARCADE excess?
• The Radio/Optical Catalog of the SSA13 Field
• The Micro-Jansky Sky at 8.4 GHz
• Fade to grey: systematic variation of the galaxy attenuation curves with galaxy properties in EAGLE
• Low Frequency Radio Constraints on the Synchrotron Cosmic Web
• The ATESP 5 GHz radio survey I. Source counts and spectral index properties of the faint radio population
• Physical properties and evolution of (Sub-)millimeter selected galaxies in the galaxy formation simulation Shark
• Is there an unaccounted excess Extragalactic Cosmic Radio Background?
• Deep 3 GHz Observations of the Lockman Hole North with the Very Large Array -2. Catalogue and μJy source properties
• The 154 MHz radio sky observed by the Murchison Widefield Array: noise, confusion and first source count analyses
• Investigating the Far-IR/Radio Correlation of Star Forming Galaxies to z=3
• MAGIC observations of the February 2014 flare of 1ES 1011+496 and ensuing constraint of the EBL density
• Integrated Radio Continuum Spectra of Galaxies
• A 610-MHz survey of the ELAIS-N1 field with the Giant Metrewave Radio Telescope - Observations, data analysis and source catalogue
• Contribution to the Diffuse Radio Background from Extragalactic Radio Sources
• Modeling the Extragalactic Background Light and the Cosmic Star Formation History
• Extremely deep 150 MHz source counts from the LoTSS Deep Fields
• The Radio Synchrotron Background: Conference Summary and Report
• Isotropic Radio Background from Quark Nugget Dark Matter
• GAMA/DEVILS: Constraining the cosmic star-formation history from improved measurements of the 0.3-2.2 micron Extragalactic Background Light
• Modelling the cosmic spectral energy distribution and extragalactic background light over all time
• An Ultra-deep Multi-band VLA Survey of the Faint Radio Sky (COSMOS-XS): Source Catalog and Number Counts
• Measurement of the extragalactic background light spectral energy distribution with VERITAS
• The first Super Massive Black Holes: indications from models for future observations
• 325-MHz observations of the ELAIS-N1 field using the Giant Metrewave Radio Telescope
• Source Counts Spanning Eight Decades of Flux Density at 1.4 GHz
• The contribution of discrete sources to the sky temperature at 144 MHz
• The ATESP Radio Survey I. Survey Description, Observations and Data Reduction
• The isotropic radio background revisited
• Deep GMRT 610 MHz Observations of the ELAIS N1 Field : Catalogue and Source Counts
• The Deep Diffuse Extragalactic Radio Sky at 1.75 GHz
• The HI Velocity Function: a test of cosmology or baryon physics?
• Cosmic Star-Formation History Measured at 1.4 GHz
• The XXL Survey XVIII. ATCA 2.1 GHz radio source catalogue and source counts for the XXL-South field
• SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-Sky Surface-Brightness Measurements: I. Survey Overview and Methods
• Determination of the Cosmic Infrared Background from COBE/FIRAS and Planck HFI Observations
• The ATLAS 5.5 GHz Survey of the Extended Chandra Deep Field South: The Second Data Release
• The unusual smoothness of the extragalactic unresolved radio background
• An updated estimate of the cosmic radio background and implications for ultra-high-energy photon propagation
• Characterizing EoR foregrounds: A study of the Lockman Hole Region at 325 MHz
• The cosmic spectral energy distribution in the EAGLE simulation
• Deep observations of the Super-CLASS super-cluster at 325 MHz with the GMRT: the low-frequency source catalogue
• The ATLAS 9.0 GHz Survey of the Extended Chandra Deep Field South: The Faint 9.0 GHz Radio Population
• Axial Ratio of Edge-On Spiral Galaxies as a Test For Extended Bright Radio Halos
• Can the Local Bubble explain the radio background?
• Stellar contributors to the hard X-ray background?
• Towards a data-driven model of the sky from low Earth orbit as observed by the Hubble Space Telescope
• SKYSURF-3: Testing Crowded Object Catalogs in the Hubble eXtreme Deep Field Mosaics to Study Sample Incompleteness from an Extragalactic Background Light Perspective
• Excess in the High Frequency Radio Background: Insights from Planck

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