EoR Foregrounds: the Faint Extragalactic Radio Sky

Abstract

A wealth of new data from upgraded and new radio interferometers are rapidly improving and transforming our understanding of the faint extra-galactic radio sky. Indeed the mounting statistics at sub-mJy and uJy flux levels is finally allowing us to get stringent observational constraints on the faint radio population and on the modeling of its the various components. In this paper I will provide a brief overview of the latest results in areas that are potentially important for an accurate treatment of extra-galactic foregrounds in experiments designed to probe the Epoch of Reionization.

arXiv comment8 pages, 2 figures. Invited review at IAU Symposium No. 333 "Peering towards Cosmic Dawn". This submission includes updated figures wrt the version published in the proceedings volume (where an error in the plotting routine produced wrong labels for the y- and x-axis)

References in corpus (37)

• A semi-empirical simulation of the extragalactic radio continuum sky for next generation radio telescopes
• New Limits on 21cm EoR From PAPER-32 Consistent with an X-Ray Heated IGM at z=7.7
• Foreground simulations for the LOFAR - Epoch of Reionization Experiment
• Resolving the Radio Source Background: Deeper Understanding Through Confusion
• A Sensitivity and Array-Configuration Study for Measuring the Power Spectrum of 21cm Emission from Reionization
• Overcoming real-world obstacles in 21 cm power spectrum estimation: A method demonstration and results from early Murchison Widefield Array data
• The Star Formation History of the Universe as Revealed by Deep Radio Observations
• A Method for 21cm Power Spectrum Estimation in the Presence of Foregrounds
• Opening the 21cm EoR Window: Measurements of Foreground Isolation with PAPER
• The Phoenix Deep Survey: The 1.4 GHz microJansky catalogue
• The LOFAR window on star-forming galaxies and AGN - curved radio SEDs and IR-radio correlation at $0<z<2.5$
• The sub-mJy radio sky in the Extended Chandra Deep Field South: source population
• The VLA Survey of the Chandra Deep Field South. V. Evolution and Luminosity Functions of sub-mJy radio sources and the issue of radio emission in radio-quiet AGN
• Realistic Simulations of the Galactic Polarized Foreground: Consequences for 21-cm Reionization Detection Experiments
• The VLA-COSMOS Survey: III. Further Catalog Analysis and the Radio Source Counts
• AGN and Starburst Radio Emission from Optically Selected QSOs
• CHIPS: The Cosmological HI Power Spectrum Estimator
• The Two-Component Radio Luminosity Function of QSOs: Star Formation and AGN
• Galaxy Evolution in the Radio Band: The Role of Starforming Galaxies and Active Galactic Nuclei
• Multi-redshift limits on the 21cm power spectrum from PAPER
• Star formation properties of sub-mJy radio sources
• Deep 3 GHz Number Counts from a P(D) Fluctuation Analysis
• Radio-Quiet Quasars in the VIDEO Survey: Evidence for AGN-powered radio emission at S_1.4GHz < 1 mJy
• LOFAR imaging of Cygnus A -- Direct detection of a turnover in the hotspot radio spectra
• Evidence that the AGN dominates the radio emission in z ~ 1 radio-quiet quasars
• An infrared-radio simulation of the extragalactic sky: from the Square Kilometer Array to Herschel
• Sample variance, source clustering and their influence on the counts of faint radio sources
• The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field
• Imaging neutral hydrogen on large-scales during the Epoch of Reionization with LOFAR
• The distribution of polarized radio sources $>$15$\mu$Jy in GOODS-N
• ATLAS 1.4 GHz Data Release 2 -- II. Properties of the faint polarized sky
• The clustering properties of radio-selected AGN and star-forming galaxies up to redshifts z~3
• A deep / wide 1-2 GHz snapshot survey of SDSS Stripe 82 using the Karl G. Jansky Very Large Array in a compact hybrid configuration
• Does the evolution of the radio luminosity function of star-forming galaxies match that of the star-formation rate function?
• Spectral energy distribution and radio halo of NGC 253 at low radio frequencies
• Constraining Polarized Foregrounds for EOR Experiments II: Polarization Leakage Simulations in the Avoidance Scheme
• An Improved Statistical Point-Source Foreground Model for the Epoch of Reionization

Cited by in corpus (3)

• Detailed study of ELAIS N1 field with the uGMRT -- II. Source Properties and Spectral Variation Of Foreground Power Spectrum from 300-500 MHz Observations
• Radio Source Extraction with ProFound
• Calibration requirement for Epoch of Reionization 21-cm signal observation -- III. Bias and variance in uGMRT ELAIS-N1 field power spectrum