Measurement of the angular correlation function of radio galaxies from the NRAO VLA Sky Survey

Abstract

We quantify the angular distribution of radio sources in the NVSS by measuring the two-point angular correlation function. By careful consideration of the resolution of radio galaxies into multiple components, we are able to determine both the galaxy angular clustering and the size distribution of giant radio galaxies. The slope of the correlation function for radio galaxies agrees with that for other classes of galaxy, gamma = 1.8, with a 3D correlation length r_0 = 6 h^-1 Mpc (under certain assumptions). Calibration problems in the survey prevent clustering analysis below 10 mJy. About 7 per cent of radio galaxies are resolved by NVSS into multiple components, with a power-law size distribution. Our work calls into question previous analyses and interpretations of the angular correlation function from radio surveys.

arXiv commentAccepted for publication as an MNRAS letter, 5 pages

References in corpus (7)

• The APM Galaxy Survey III: An Analysis of Systematic Errors in the Angular Correlation Function and Cosmological Implications
• The Angular Two-Point Correlation Function for the FIRST Radio Survey
• Variance and Skewness in the FIRST survey
• A new sample of large angular size radio galaxies. I. The radio data
• The correlation function of radio sources
• TWO-POINT ANGULAR CORRELATION FUNCTION FOR THE GREEN BANK 4.85 GHZ SKY SURVEY
• Interpreting the Clustering of Radio Sources

Cited by in corpus (78)

• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. II. The Source Catalogue
• EMU: Evolutionary Map of the Universe
• Science with ASKAP - the Australian Square Kilometre Array Pathfinder
• Detection of Gravitational Lensing in the Cosmic Microwave Background
• Bright Source Subtraction Requirements For Redshifted 21 cm Measurements
• A semi-empirical simulation of the extragalactic radio continuum sky for next generation radio telescopes
• Correlation of CMB with large-scale structure: I. ISW Tomography and Cosmological Implications
• Radio and Millimeter Continuum Surveys and their Astrophysical Implications
• Astrophysical and Cosmological Information from Large-scale sub-mm Surveys of Extragalactic Sources
• Imaging the Epoch of Reionization: limitations from foreground confusion and imaging algorithms
• Foreground Contamination in Interferometric Measurements of the Redshifted 21 cm Power Spectrum
• Planck 2013 results. XIX. The integrated Sachs-Wolfe effect
• Improved Primordial Non-Gaussianity Constraints from Measurements of Galaxy Clustering and the Integrated Sachs-Wolfe Effect
• The significance of the integrated Sachs-Wolfe effect revisited
• Radio Continuum Surveys with Square Kilometre Array Pathfinders
• Radio Galaxy populations and the multi-tracer technique: pushing the limits on primordial non-Gaussianity
• A reassessment of the evidence of the Integrated Sachs-Wolfe effect through the WMAP-NVSS correlation
• Deep 3 GHz Number Counts from a P(D) Fluctuation Analysis
• Predictions on the angular power spectrum of clustered extragalactic point sources at CMB frequencies from flat and all--sky 2D-simulations
• Quantifying angular clustering in wide-area radio surveys
• Constraints on Primordial Non-Gaussianity from Large Scale Structure Probes
• Low Frequency Radio Constraints on the Synchrotron Cosmic Web
• The angular power spectrum of NVSS radio galaxies
• The 2dF Galaxy Redshift Survey: Clustering properties of radio galaxies
• Sample variance, source clustering and their influence on the counts of faint radio sources
• The ASKAP/EMU Source Finding Data Challenge
• CENSORS: A Combined EIS-NVSS Survey Of Radio Sources. I. Sample definition, radio data and optical identifications
• The Atacama Cosmology Telescope: measuring radio galaxy bias through cross-correlation with lensing
• Galaxy and Mass Assembly (GAMA): The evolution of bias in the radio source population to z ~ 1.5
• Unbiased methods for removing systematics from galaxy clustering measurements
• Unbiased pseudo-Cl power spectrum estimation with mode projection
• Revisiting the WMAP - NVSS angular cross correlation. A skeptic's view
• The clustering of radio galaxies: biasing and evolution versus stellar mass
• Large angular scale multipoles at redshift ~0.8
• No evidence for the cold spot in the NVSS radio survey
• Extragalactic source contributions to arcminute-scale Cosmic Microwave Background anisotropies
• Cosmological Radio Emission induced by WIMP Dark Matter
• Confusion noise at far-IR to millimeter wavelengths
• Angular clustering in the SUMSS radio survey
• Impact of Redshift Information on Cosmological Applications with Next-Generation Radio Surveys
• Low Frequency Imaging of Fields at High Galactic Latitude with the Murchison Widefield Array 32-Element Prototype
• Evolution in the bias of faint radio sources to z ~ 2.2
• Two 100 Mpc-scale structures in the 3-D distribution of radio galaxies and their implications
• The clustering of sub-mJy radio sources in The Bootes Deep Field
• An optimal estimator for the CMB-LSS angular power spectrum and its application to WMAP and NVSS data
• The large scale clustering of radio sources
• The angular two-point correlation of NVSS galaxies revisited
• Probing primordial non-Gaussianity with the power spectrum and bispectrum of future 21cm intensity maps
• Proto-clusters and the clustering of distant galaxies and radio sources
• The 3-D clustering of radio galaxies in the TONS survey
• Cosmological constraints with the sub-millimetre galaxies Magnification Bias after large scale bias corrections
• WMAP anomalous signal in the ecliptic plane
• Evolution in the clustering strength of radio galaxies
• Extragalactic sources in Cosmic Microwave Background maps
• Measuring BAO and non-Gaussianity via QSO clustering
• Fluctuations of differential number counts of radio continuum sources
• The galaxy power spectrum from TGSS ADR1 and the effect of flux calibration systematics
• Integrated Sachs-Wolfe map reconstruction in the presence of systematic errors
• A study on the Clustering Properties of Radio-Selected sources in the Lockman Hole Region at 325 MHz
• Color dependence of clustering of massive galaxies at 0.5$\le z\le$2.5: similar spatial distributions between green valley galaxies and AGNs
• Clustering at 74 MHz
• Spatially Homogeneous Universes with Late-Time Anisotropy
• Cosmic dipole tensions: confronting the cosmic microwave background with infrared and radio populations of cosmological sources
• Clustering properties of the CatWISE2020 quasar catalogue and their impact on the cosmic dipole anomaly
• Probing the bias of radio sources at high redshift
• Future Radio Continuum Cosmology Clustering Surveys
• Counting quasar--radio source pairs to derive the millijansky radio luminosity function and clustering strength to z=3.5
• CMB observations using the SKA
• The Angular Correlation Function as measured by the GLEAM-X Survey
• Confusion noise due to clustered extragalactic point sources. Application of logarithmic cumulants for parameter estimation
• Hosts and environments: a (large-scale) radio history of AGN and star-forming galaxies
• The spatial clustering of radio sources in NVSS and FIRST; implications for galaxy clustering evolution
• Improving Photometric Galaxy Clustering Constraints With Cross-Bin Correlations
• The Ellis and Baldwin test of the Cosmic Dipole: Exploring the impact of multiple flux density cuts
• Clustering properties of TGSS radio sources
• Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Counts-in-Cells Statistics
• Addressing Dipole Tension via Clustering in $\Lambda$CDM and beyond
• CMB lensing tomography with clustering estimation of lens redshift distributions