The Rapid ASKAP Continuum Survey I: Design and First Results

Abstract

The Rapid ASKAP Continuum Survey (RACS) is the first large-area survey to be conducted with the full 36-antenna Australian Square Kilometre Array Pathfinder (ASKAP) telescope. RACS will provide a shallow model of the ASKAP sky that will aid the calibration of future deep ASKAP surveys. RACS will cover the whole sky visible from the ASKAP site in Western Australia, and will cover the full ASKAP band of $700-1800$ MHz. The RACS images are generally deeper than the existing NRAO VLA Sky Survey (NVSS) and Sydney University Molonglo Sky Survey (SUMSS) radio surveys and have better spatial resolution. All RACS survey products will be public, including radio images (with $\sim 15$ arcsecond resolution) and catalogues of about three million source components with spectral index and polarisation information. In this paper, we present a description of the RACS survey and the first data release of 903 images covering the sky south of declination $+41^{\circ }$ made over a 288 MHz band centred at 887.5 MHz.

arXiv comment24 pages, 17 figures, 4 tables. For associated data see https://data.csiro.au/collections/domain/casdaObservation/results/PRAS110%20-%20The%20Rapid%20ASKAP%20Continuum

References in corpus (14)

• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. II. The Source Catalogue
• An Accurate Flux Density Scale from 50 MHz to 50 GHz
• The non-coplanar baselines effect in radio interferometry: The W-Projection algorithm
• The Very Large Array Low-frequency Sky Survey Redux (VLSSr)
• The Molonglo Galactic Plane Survey (MGPS-2): Compact Source Catalogue
• Extragalactic Peaked-Spectrum Radio Sources at Low Frequencies
• The VLA-COSMOS 3~GHz Large Project: Cosmic evolution of radio AGN and implications for radio-mode feedback since z~5
• The VLA-COSMOS Survey: III. Further Catalog Analysis and the Radio Source Counts
• Duchamp: a 3D source finder for spectral-line data
• A radio spectral index map and catalogue at 147-1400 MHz covering 80 per cent of the sky
• An all-sky survey of circular polarisation at 200 MHz
• Source-finding for the Australian Square Kilometre Array Pathfinder
• The supernova remnant population of the Small Magellanic Cloud

Cited by in corpus (162)

• A Quick Look at the $3$GHz Radio Sky I. Source Statistics from the Very Large Array Sky Survey
• The Rapid ASKAP Continuum Survey Paper II: First Stokes I Source Catalogue Data Release
• Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds
• A Challenge to the Standard Cosmological Model
• Feedback from Active Galactic Nuclei in Galaxy Groups
• A Search for Extragalactic Fast Blue Optical Transients in ZTF and the Rate of AT2018cow-like Transients
• Anomalies in Physical Cosmology
• A luminous fast radio burst that probes the Universe at redshift 1
• A non-repeating fast radio burst in a dwarf host galaxy
• Testing the Cosmological Principle with CatWISE Quasars: A Bayesian Analysis of the Number-Count Dipole
• A circular polarisation survey for radio stars with the Australian SKA Pathfinder
• The Pan-STARRS1 z>5.6 quasar survey II: Discovery of 55 Quasars at 5.6<z<6.5
• A radio-emitting outflow produced by the tidal disruption event AT2020vwl
• First release of Apertif imaging survey data
• Early Science from POSSUM: Shocks, turbulence, and a massive new reservoir of ionised gas in the Fornax cluster
• The cosmic radio dipole: Bayesian estimators on new and old radio surveys
• On the Fast Radio Burst and Persistent Radio Source Populations
• The LOFAR LBA Sky Survey II. First data release
• Radio Detection of VIK J2318$-$3113, the Most Distant Radio-Loud Quasar ($z$=6.44)
• V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey
• The First Large Absorption Survey in HI (FLASH): I. Science Goals and Survey Design
• The emission of interpulses by a 6.45-hour period coherent radio transient
• MIGHTEE: Deep 1.4 GHz Source Counts and the Sky Temperature Contribution of Star Forming Galaxies and Active Galactic Nuclei
• The ASKAP-EMU Early Science Project: 888 MHz Radio Continuum Survey of the Large Magellanic Cloud
• A Case for a Binary Black Hole System Revealed via Quasi-Periodic Outflows
• Energetic nuclear transients in luminous and ultraluminous infrared galaxies
• Decoding the giant extragalactic radio sources
• Discovery of ASKAP J173608.2-321635 as a Highly-Polarized Transient Point Source with the Australian SKA Pathfinder
• Periodic Radio Emission from the T8 Dwarf WISE J062309.94-045624.6
• Exploring the physics behind the non-thermal emission from star-forming galaxies detected in gamma rays
• A comprehensive search for the radio counterpart of GW190814 with the Australian Square Kilometre Array Pathfinder
• The population of tidal disruption events discovered with eROSITA
• 21 new long-term variables in the GX 339-4 field: two years of MeerKAT monitoring
• Ultra-Steep Spectrum Radio `Jellyfish' Uncovered in Abell 2877
• WALLABY Pre-Pilot Survey: HI Content of the Eridanus Supergroup
• Discovery of PSR J0523-7125 as a Circularly Polarized Variable Radio Source in the Large Magellanic Cloud
• A Multiwavelength view of IC 860: What Is in Action inside Quenching Galaxies
• Giant radio galaxies in the LoTSS Boötes deep field
• The accretion of a solar mass per day by a 17-billion solar mass black hole
• Radio Spectra of Luminous, Heavily Obscured WISE-NVSS Selected Quasars
• The most probable host of CHIME FRB 190425A, associated with binary neutron star merger GW190425, and a late-time transient search
• New Radio-Loud QSOs at the end of the Re-ionisation Epoch
• Detection of X-ray Emission from a Bright Long-Period Radio Transient
• The merging galaxy cluster Abell 3266 at low radio frequencies
• Radio Counterpart Candidates to 4FGL-DR2 Unassociated Sources
• The LOFAR-eFEDS survey: The incidence of radio and X-ray AGN and the disk-jet connection
• A search for radio afterglows from gamma-ray bursts with the Australian Square Kilometre Array Pathfinder
• A candidate relativistic tidal disruption event at 340 Mpc
• ViCTORIA project: The LOFAR HBA Virgo Cluster Survey
• Cosmological Probes of Structure Growth and Tests of Gravity
• Testing a scaling relation between coherent radio emission and physical parameters of hot magnetic stars
• Late-Time Evolution and Modeling of the Off-Axis Gamma-ray Burst Candidate FIRST J141918.9+394036
• Radio AGN Selection and Characterization in Three Deep-Drilling Fields of the Vera C. Rubin Observatory Legacy Survey of Space and Time
• A compact symmetric radio source born at one-tenth the current age of the Universe
• A deep 1.4 GHz survey of the J1030 equatorial field: a new window on radio source populations across cosmic time
• MeerKAT discovery of radio emission from the Vela X-1 bow shock
• A pilot ASKAP survey for radio transients towards the Galactic Centre
• Radio Afterglows from Compact Binary Coalescences: Prospects for Next-Generation Telescopes
• HI absorption at z~0.7 against the lobe of the powerful radio galaxy PKS 0409-75
• Radio Variable and Transient Sources on Minute Timescales in the ASKAP Pilot Surveys
• MALS SALT-NOT survey of MIR-selected powerful radio-bright AGN at 0<z<3.5
• FLASH Pilot Survey: Detections of associated 21 cm HI absorption in GAMA galaxies at 0.42 < z <1.00
• Flaring Stars in a Non-targeted mm-wave Survey with SPT-3G
• The Long and the Short of It: The Benefits and Leverage of Ultraviolet-Radio Galaxy Fitting
• First measurement of interplanetary scintillation with the ASKAP radio telescope: implications for space weather
• Radio-loud fraction of z>6 quasars
• A matched-filter approach to radio variability and transients: searching for orphan afterglows in the VAST Pilot Survey
• The kinematic contribution to the cosmic number count dipole
• Transient radio emission from low-redshift galaxies at z<0.3 revealed by VLASS and FIRST surveys
• Multiwavelength monitoring of the nucleus in PBC J2333.9-2343: the giant radio galaxy with a blazar-like core
• Interactions between the jet and disk wind in a nearby radio intermediate quasar III Zw 2
• BASS XLVII: 22 GHz Radio Atlas of Swift-BAT Selected AGN
• Radio modelling of the brightest and most luminous non-thermal colliding-wind binary Apep
• Searching for Magnetar Binaries Disrupted by Core-Collapse Supernovae
• A measurement of the Integrated Sachs-Wolfe Effect with the Rapid ASKAP Continuum Survey
• Radio detections of IR-selected runaway stellar bow shocks
• A study of Dipolar Signal in distant Quasars with various observables
• Strategies for Maximizing Detection Rate in Radio SETI
• Discovery and characterization of 25 new quasars at 4.6 < z < 6.9 from wide-field multi-band surveys
• Unravelling sub-stellar magnetospheres
• X-ray and radio observations of central black holes in nearby low-mass early-type galaxies: Preliminary evidence for low Eddington fractions
• A Low Frequency Pilot Survey of Southern HII Regions in the Vela Constellation
• Selection of powerful radio galaxies with machine learning
• The host galaxies of radio-loud quasars at z>5 with ALMA
• Testing the Cosmological Principle: On the Time Dilation of Distant Sources
• Searching for stellar flares from low mass stars using ASKAP and TESS
• Resolution of the incongruency of dipole asymmetries within various large radio surveys -- implications for the Cosmological Principle
• Comprehensive view on a $z\sim 6.5$ radio-loud QSO: from the radio to the optical/NIR to the X-ray band
• Hints of auroral and magnetospheric polarized radio emission from the scallop-shell star 2MASS J05082729$-$2101444
• No strong radio absorption detected in the low-frequency spectra of radio-loud quasars at z > 5.6
• Cosmic dipole tensions: confronting the cosmic microwave background with infrared and radio populations of cosmological sources
• eRO-ExTra: eROSITA extragalactic non-AGN X-ray transients and variables in eRASS1 and eRASS2
• A horseshoe-shaped ring of diffuse emission detected at 1.4 GHz
• The MeerKAT Absorption Line Survey: Homogeneous continuum catalogues towards a measurement of the cosmic radio dipole
• Discovery of an Extremely Intermittent Periodic Radio Source
• A Multiwavelength Machine-learning Approach to Classifying X-ray Sources in the Fields of Unidentified 4FGL-DR4 sources
• Is the X-ray bright z = 5.5 quasar SRGE J170245.3+130104 a blazar?
• Update of the INTEGRAL/IBIS AGN catalogue: deeper on the Galactic plane and wider beyond
• RadioSED I: Bayesian inference of radio SEDs from inhomogeneous surveys
• High-$z$ radio Quasars in RACS I: Selection, identification, and multi-wavelength properties
• Hydra I: An extensible multi-source-finder comparison and cataloguing tool
• Excess cataloged X-ray and radio sources at galaxy-cluster virial shocks
• TXS 1433+205: The most distant gamma-ray emitting FR II radio galaxy
• The Galactic latitude dependency of Faraday complexity in the S-PASS/ATCA RM catalogue
• X-ray selected broad absorption line quasars in SDSS-V: BALs and non-BALs span the same range of X-ray properties
• Evidence for a large off-centered galactic outflow and its connection to the extraplanar diffuse ionized gas in IC 1553
• Multiwavelength Evidence for Two New Candidate Transitional Millisecond Pulsars in the Sub-luminous Disk State: 4FGL J0639.1--8009 and 4FGL J1824.2+1231
• Compact and variable radio emission from an active galaxy with supersoft X-ray emission
• G321.3-3.9: A new supernova remnant observed with multi-band radio data and in the SRG/eROSITA All-Sky Surveys
• Multi-scale VLBI observations of the candidate host galaxy of GRB 200716C
• A compact symmetric ejection from the low mass AGN in the LINER galaxy NGC 4293
• The technological and scientific development of ASKAP
• The ViCTORIA project: description of a multi-frequency radio survey of the Virgo galaxy cluster
• A catalogue of complex radio sources in the Rapid ASKAP Continuum Survey created using a Self-Organising Map
• Exploring magnetised galactic outflows in starburst dwarf galaxies NGC 3125 and IC 4662
• UNIONS Optical Identifications for VLASS Radio Sources in the Euclid Sky (UNVEIL) I. A Catalog of ~146,000 Radio Galaxies up to z~5
• Supernova remnant candidates identified using MWA Galactic Plane Monitoring over 285deg < l < 70deg and |b| < 16deg
• Searching for Radio Transients with Inverted Spectra in Epoch 1 of VLASS and VCSS, and Identification of a Sample of Candidate Relativistic Nuclear Transients
• Chandra X-ray Observations of PSR J1849-0001, its Pulsar Wind Nebula, and the TeV Source HESS J1849-000
• A LOFAR sample of luminous compact sources coincident with nearby dwarf galaxies
• Interpreting the statistical properties of high-z extragalactic sources detected by the South Pole Telescope survey
• Polarized, variable radio emission from the scallop-shell binary system DG CVn
• Einstein Probe discovery of the short period intermediate polar EP J115415.8-501810
• From 100 MHz to 10 GHz: Unveiling the spectral evolution of the X-shaped radio galaxy in Abell 3670
• The Universe is Brighter in the Direction of Our Motion: Galaxy Counts and Fluxes are Consistent with the CMB Dipole
• Discovery of a giant radio outburst of the narrow-line Seyfert 1 galaxy SDSS J110546.07+145202.4
• Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations
• CHEX-MATE: New detections and properties of the radio diffuse emission in massive clusters with MeerKAT
• A new window into the sub-parsec scale magnetic field in the Milky Way? Unveiling small-scale magneto-ionic structures with Faraday complexity
• A FLASH on Blazars: Capturing the Radio Realm of 4FGL Blazars with SKAO Pathfinders
• Structural and spectral properties of Galactic plane variable radio sources
• Relighting the fire in Hickson Compact Group (HCG) 15: magnetised fossil plasma revealed by the SKA Pathfinders & Precursors
• A Machine Learning made Catalog of FR-II Radio Galaxies from the FIRST Survey
• The superMIGHTEE project: MeerKAT and GMRT Together to Unveil the Deep Radio Sky
• The Multi-Epoch Jet Outbursts in Abell 496: synchrotron ageing and buoyant X-ray cavities draped by warm gas filaments
• LOFAR 58 MHz Legacy Survey of the 3CRR Catalog
• NOCTURNE. I. The radio spectrum of narrow-line Seyfert 1 galaxies
• A Tidal Disruption Event from an Intermediate-mass Black Hole Revealed by Comprehensive Multi-wavelength Observations
• Enhanced Astrometry of the Rapid ASKAP Continuum Survey for Precise Localisation of Fast Radio Bursts
• A Multi-Mechanism Hybrid Model of Peaked-Spectrum Radio Sources
• Radio Galaxy Zoo: Using semi-supervised learning to leverage large unlabelled data-sets for radio galaxy classification under data-set shift
• Merger of massive galaxy cluster CL0238.3+2005 at z~0.4: just after pericenter passage?
• Enhanced activity in close dual-AGN systems in the local Universe
• AT2019ijn: a fast-rising, slow-decaying blue optical transient with exceptionally bright radio emission
• Radio Properties of Narrow-Line and Broad-Line Seyfert 1 Galaxies
• FIRESTORM I: Stellar Feedback and Gas Kinematics in the Evolved W40 Hub-Filament System
• Milliarcsecond-resolution Radio-imaging Survey of Blazar Candidates at 4 < z < 5.4
• Measurements of the diffuse Galactic synchrotron spectral index and curvature from MeerKLASS pilot data
• IGR J18249-3243: a new GeV-emitting FR II and the emerging population of high energy radio galaxies
• Low-frequency spectra of neutron star + OB supergiant binaries: Does wind density drive persistent and flaring modes of accretion?
• Pulsars identified in the LOFAR Two-metre Sky Survey at 144 MHz
• Deep ASKAP EMU Survey of the GAMA23 field: Properties of radio sources
• MIGHTEE: total intensity radio continuum imaging and the COSMOS / XMM-LSS Early Science fields
• The GLEAM 4-Jy (G4Jy) Sample: IV. Multiwavelength data and analysis
• Wide-field GMRT imaging of X-shaped Radio-Galaxies: Spectral properties of 4C32.25 and 4C61.23
• Galaxy number-count dipole and superhorizon fluctuations
• Relativistic ions with power-law spectra explain radio phoenixes
• MEDUSA I. Tracing magnetic field structures in tidal arms of the dwarf-dwarf merger NGC 1487
• Supermassive Black Hole Winds in X-rays: SUBWAYS IV. Tracing Radio Emission and Unveiling the Role of Winds
• Cosmic-ray electron propagation in NGC 3044 from radio continuum observations
• Finding the evolutionary link between ULIRGs and radio galaxies
• ALMAGAL VIII. Early phases of triggered star formation in source AG286.0716$-$1.8229