A study on the Clustering Properties of Radio-Selected sources in the Lockman Hole Region at 325 MHz

Abstract

Studying the spatial distribution of extragalactic source populations is vital in understanding the matter distribution in the Universe. It also enables understanding the cosmological evolution of dark matter density fields and the relationship between dark matter and luminous matter. Clustering studies are also required for EoR foreground studies since it affects the relevant angular scales. This paper investigates the angular and spatial clustering properties and the bias parameter of radio-selected sources in the Lockman Hole field at 325 MHz. The data probes sources with fluxes $\gtrsim$0.3 mJy within a radius of 1.8${}^{\circ }$ around the phase center of a $6^{\circ }\times 6^{\circ }$ mosaic. Based on their radio luminosity, the sources are classified into Active Galactic Nuclei (AGNs) and Star-Forming Galaxies (SFGs). Clustering and bias parameters are determined for the combined populations and the classified sources. The spatial correlation length and the bias of AGNs are greater than SFGs -- indicating that more massive haloes host the former. This study is the first reported estimate of the clustering property of sources at 325 MHz, intermediate between the preexisting studies at high and low-frequency bands. It also probes a well-studied deep field at an unexplored frequency with moderate depth and area. Clustering studies require such observations along different lines of sight, with various fields and data sets across frequencies to avoid cosmic variance and systematics. Thus, an extragalactic deep field has been studied in this work to contribute to this knowledge.

arXiv comment16 Pages, 10 Figures, submitted after minor revision to MNRAS

References in corpus (123)

• Astropy: A Community Python Package for Astronomy
• The Sloan Digital Sky Survey: Technical Summary
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Large scale bias and the peak background split
• LOFAR: The LOw-Frequency ARray
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Halo occupation numbers and galaxy bias
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• The 2dF Galaxy Redshift Survey: The power spectrum and the matter content of the universe
• Estimating Star Formation Rates from Infrared and Radio Luminosities: The Origin of the Radio-Infrared Correlation
• Large-Scale Galaxy Bias
• A measurement of the cosmological mass density from clustering in the 2dF Galaxy Redshift Survey
• Merger rates in hierarchical models of galaxy formation. II: Comparison with N-body simulations
• On the fundamental dichotomy in the local radio-AGN population: accretion, evolution, and host galaxy properties
• The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
• Identifying Luminous AGN in Deep Surveys: Revised IRAC Selection Criteria
• Dust-Corrected Star Formation Rates of Galaxies. II. Combinations of Ultraviolet and Infrared Tracers
• The Chandra Deep Field South: Optical Spectroscopy I
• The LOFAR Two-metre Sky Survey - II. First data release
• The 2dF Galaxy Redshift Survey: Luminosity dependence of galaxy clustering
• EMU: Evolutionary Map of the Universe
• Planck 2013 results. XVII. Gravitational lensing by large-scale structure
• Science with the Square Kilometer Array: Motivation, Key Science Projects, Standards and Assumptions
• Ionospheric Calibration of Low Frequency Radio Interferometric Observations using the Peeling Scheme: I. Method Description and First Results
• Measuring primordial non-gaussianity without cosmic variance
• A semi-empirical simulation of the extragalactic radio continuum sky for next generation radio telescopes
• Cosmic Complementarity: Joint Parameter Estimation from CMB Experiments and Redshift Surveys
• The Skewness of the Aperture Mass Statistic
• The Star Formation Rate Density and Dust Attenuation Evolution over 12 Gyr with the VVDS Surveys
• The LOFAR Two Meter Sky Survey: Deep Fields, I -- Direction-dependent calibration and imaging
• A comparison of estimators for the two-point correlation function
• Radio Foregrounds for the 21cm Tomography of the Neutral Intergalactic Medium at High Redshifts
• The 2dF-SDSS LRG and QSO Survey: The LRG 2-Point Correlation Function and Redshift-Space Distortions
• VLA-COSMOS 3GHz Large Project: The infrared-radio correlation of star-forming galaxies and AGN to $z\lesssim 6$
• Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population
• The faint radio sky: radio astronomy becomes mainstream
• Photometric redshifts in the SWIRE Survey
• The Star Formation History of the Universe as Revealed by Deep Radio Observations
• The far-infrared/radio correlation and radio spectral index of galaxies in the SFR-M* plane up to z 2
• LOFAR/H-ATLAS: The low-frequency radio luminosity - star-formation rate relation
• The Spitzer Extragalactic Representative Volume Survey (SERVS): survey definition and goals
• The LOFAR Two-metre Sky Survey (LoTSS) III. First Data Release: optical/IR identifications and value-added catalogue
• LOFAR/H-ATLAS: A deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field
• The UKIRT Hemisphere Survey: Definition and J-band Data Release
• 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
• A new method to separate star forming from AGN galaxies at intermediate redshift: The submillijansky radio population in the VLA-COSMOS survey
• A sample of 6C radio sources designed to find objects at redshift > 4: III --- imaging and the radio galaxy K-z relation
• The VLA-COSMOS 3~GHz Large Project: Cosmic evolution of radio AGN and implications for radio-mode feedback since z~5
• 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
• Radio faint AGN: a tale of two populations
• CHIPS: The Cosmological HI Power Spectrum Estimator
• Foregrounds for redshifted 21 cm studies of reionization: GMRT 153 MHz observations
• The 21 centimeter emission from the reionization epoch: extended and point source foregrounds
• The Angular Two-Point Correlation Function for the FIRST Radio Survey
• The spatial clustering of X-ray selected AGN and galaxies in the Chandra Deep Field South and North
• The spatial clustering of X-ray selected AGN in the XMM-COSMOS field
• Radio Observations of the Hubble Deep Field South Region II: The 1.4 GHz Catalogue and Source Counts
• Radio Continuum Surveys with Square Kilometre Array Pathfinders
• Measurement of the angular correlation function of radio galaxies from the NRAO VLA Sky Survey
• Herschel-ATLAS: The far-infrared--radio correlation at z<0.5
• Variance and Skewness in the FIRST survey
• RCSLenS: The Red Cluster Sequence Lensing Survey
• Baryon Acoustic Oscillations from the SDSS DR10 galaxies angular correlation function
• Photometric redshifts for the next generation of deep radio continuum surveys - I: Template fitting
• The Angular Clustering of WISE-Selected AGN: Different Haloes for Obscured and Unobscured AGN
• HELP: A catalogue of 170 million objects, selected at 0.36-4.5 $\mu$m, from 1270 deg.${}^2$ of prime extragalactic fields
• Galaxy And Mass Assembly: The 1.4GHz SFR indicator, SFR-M* relation and predictions for ASKAP-GAMA
• The link between accretion mode and environment in radio-loud active galaxies
• Quantifying angular clustering in wide-area radio surveys
• Cosmology with the Square Kilometre Array
• The Lockman Hole Project: new constraints on the sub-mJy source counts from a wide-area 1.4 GHz mosaic
• Deep Low-Frequency Radio Observations of the NOAO Bootes Field: I. Data Reduction and Catalog Construction
• PRIMUS + DEEP2: Clustering of X-ray, Radio and IR-AGN at z~0.7
• LOFAR-Boötes: Properties of high- and low-excitation radio galaxies at $0.5<z<2.0$
• Evolution of faint radio sources in the VIDEO-XMM3 field
• The 2dF Galaxy Redshift Survey: Clustering properties of radio galaxies
• Deep 3 GHz Observations of the Lockman Hole North with the Very Large Array -2. Catalogue and μJy source properties
• Cosmological Measurements with Forthcoming Radio Continuum Surveys
• The SDSS Galaxy Angular Two-Point Correlation Function
• Photometric redshifts for the next generation of deep radio continuum surveys - II. Gaussian processes and hybrid estimates
• T-RaMiSu: The Two-meter Radio Mini Survey I. The Bootes Field
• The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field
• The 2dF Galaxy Redshift Survey: The population of nearby radio galaxies at the 1 mJy level
• Cataloging the radio-sky with unsupervised machine learning: a new approach for the SKA era
• Revised SWIRE photometric redshifts
• The Phoenix Deep Survey: spectroscopic catalog
• 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
• The clustering properties of radio-selected AGN and star-forming galaxies up to redshifts z~3
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Angular clustering tomography and its cosmological implications
• Source counts and confusion at 72-231 MHz in the MWA GLEAM survey
• Probing primordial non-Gaussianity via iSW measurements with SKA continuum surveys
• Modelling the luminosities and sizes of radio galaxies: radio luminosity function at z = 6
• Galaxy And Mass Assembly (GAMA): The 325 MHz Radio Luminosity Function of AGN and Star Forming Galaxies
• Free-Free Emission at Low Radio Frequencies
• LOFAR observations of the XMM-LSS field
• Multiwavelength characterization of faint Ultra Steep Spectrum radio sources : A search for high-redshift radio galaxies
• The spatial clustering of mid-IR selected star forming galaxies at z ~ 1 in the GOODS fields
• Dark Energy Survey Year 1 Results: Measurement of the Galaxy Angular Power Spectrum
• Mapping the real space distributions of galaxies in SDSS DR7: I. Two Point Correlation Functions
• Cosmic evolution of star-forming galaxies to $z\simeq 1.8$ in the faint low-frequency radio source population
• Impact of Redshift Information on Cosmological Applications with Next-Generation Radio Surveys
• One- and Two-point Source Statistics from the LOFAR Two-metre Sky Survey First Data Release
• The PEP Survey: Infrared Properties of Radio-Selected AGN
• Spatial Clustering from GALEX-SDSS samples: Star Formation History and large-scale clustering
• Large-scale analysis of the SDSS-III DR8 photometric luminous galaxies angular correlation function
• The PEP Survey: evidence for intense star-forming activity in the majority of radio-selected AGN at z>~1
• The LOFAR Two-metre Sky Survey Deep fields: A new analysis of low-frequency radio luminosity as a star-formation tracer in the Lockman Hole region
• Clustering of star-forming galaxies detected in mid-infrared with the Spitzer wide-area survey
• New constraints on the 1.4 GHz source number counts and luminosity functions in the Lockman Hole field
• Characterizing EoR foregrounds: A study of the Lockman Hole Region at 325 MHz
• Angular clustering of point sources at 150 MHz in the TGSS survey
• The Herschel-PEP survey: evidence for downsizing in the hosts of dusty star-forming systems
• The Clustering and Halo Masses of Star Forming Galaxies at z<1
• The study of the angular and spatial distribution of radio selected AGNs and star-forming galaxies in the ELAIS N1 field
• The galaxy power spectrum from TGSS ADR1 and the effect of flux calibration systematics
• The Evolution of the Low-Frequency Radio AGN Population to $z\simeq 1.5$ in the ELAIS N1 Field

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• Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Cross-correlation with the cosmic microwave background
• Pulsar B1237+25 Aberration/Retardation Analysis from Decimeter to Decameter Wavelength: Challenge to "Radius-to-Frequency Mapping"
• Synthetic Observations with the Square Kilometre Array (SKA) -- development towards an end-to-end pipeline
• MIGHTEE: The dark matter haloes, duty cycle and mechanical feedback from radio-AGN up to $z\sim 2.5$
• Cross-correlating the EMU Pilot Survey 1 with CMB lensing: Constraints on cosmology and galaxy bias with harmonic-space power spectra