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The WEAVE-LOFAR Survey
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abstract
In these proceedings we highlight the primary scientific goals and design of the WEAVE-LOFAR survey, which will use the new WEAVE spectrograph on the 4.2m William Herschel Telescope to provide the primary source of spectroscopic information for the LOFAR Surveys Key Science Project. Beginning in 2018, WEAVE-LOFAR will generate more than 10$^6$ R=5000 365-960 nm spectra of low-frequency selected radio sources, across three tiers designed to efficiently sample the redshift-luminosity plane, and produce a data set of enormous legacy value. The radio frequency selection, combined with the high multiplex and throughput of the WEAVE spectrograph, make obtaining redshifts in this way very efficient, and we expect that the redshift success rate will approach 100 per cent at $z < 1$. This unprecedented spectroscopic sample - which will be complemented by an integral field component - will be transformational in key areas, including studying the star formation history of the Universe, the role of accretion and AGN-driven feedback, properties of the epoch of reionisation, cosmology, cluster haloes and relics, as well as the nature of radio galaxies and protoclusters. Each topic will be addressed in unprecedented detail, and with the most reliable source classifications and redshift information in existence.
Forward citations
Cited by 13 Pith papers
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MIGHTEE-HI: Environmental effects of cosmic filaments on extragalactic HI detections in the COSMOS and XMM-LSS fields
Filaments in the cosmic web measurably change how often galaxies are detected in HI, reducing detections in low-density late-type galaxies and enhancing them in massive early-type galaxies.
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On the relationship between the cosmic web and the alignment of galaxies and AGN jets
Massive galaxies within about 11 Mpc of cosmic filaments align their optical major axes with the filaments, and their radio jets become more randomly oriented relative to the host within about 8 Mpc.
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A novel Bayesian approach for decomposing the radio emission of quasars: II. Link between quasar radio emission and black hole mass
Quasars with the top 20% most massive black holes are 2 to 3 times more likely to host strong radio jets, but only among the top 5% of radio-bright quasars.
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WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet
The shock in Stephan's Quintet is hypersonic in cold gas but weak in hot plasma, and its radio brightness boost is best explained by adiabatic compression of old cosmic-ray electrons rather than fresh particle acceleration.
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HETDEX-LOFAR Spectroscopic Redshift Catalog
A combined HETDEX-LOFAR catalog delivers 9,087 claimed new spectroscopic redshifts together with derived stellar masses, star formation rates, and a new radio luminosity-star formation relation.
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Radio-AGN activity across the galaxy population: dependence on stellar mass, star-formation rate, and redshift
Using LOFAR deep fields, the incidence of radio-loud AGN depends on both stellar mass and star-formation rate: quiescent-host LERGs follow a redshift-invariant steep mass relation, and lower-mass star-forming galaxies...
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The DESI View of the Faint Radio Source Population in LoTSS DR2
Probabilistic spectroscopic classification of 251k LoTSS radio sources yields the largest high-confidence sample and confirms LERGs accrete below ~1% Eddington while HERGs accrete above it.
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The LOFAR Two-metre Sky Survey Deep Fields: new probabilistic spectroscopic classifications and the accretion rates of radio galaxies
A probabilistic spectroscopic classification of 4,471 radio sources finds that radiatively efficient and inefficient AGN have distinct Eddington-scaled accretion rates.
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The LOFAR Two-metre Sky Survey: Deep Fields Data Release 2. I. The ELAIS-N1 field
The final 6 arcsecond LoTSS Deep ELAIS-N1 image reaches 10.7 microjansky per beam at 144 MHz and catalogues 154,952 radio sources over 24.53 square degrees.
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Prospects of a statistical detection of the 21-cm forest and its potential to constrain the thermal state of the neutral IGM during reionization
Forward-modeled 21-cm forest spectra show that a 1D power spectrum detection is feasible with 500 hr of uGMRT or 50 hr of SKA1-low time for a 25% neutral, cold IGM at z=6, and that null detections can constrain IGM he...
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An ESO-SKAO Synergistic Approach to Galaxy Formation and Evolution Studies
A review proposing that ESO multi-object and integral-field spectrographs can provide the redshift and multi-phase gas follow-up needed to exploit SKAO radio surveys.
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Unlocking the Full Potential of SKAO Extra-galactic Science with High-multiplex Optical Spectroscopy
Optical spectroscopy is required to unlock the full potential of SKAO extragalactic surveys through precise redshifts, activity diagnostics, HI stacking, and large-scale structure mapping.
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A decade of sub-arcsecond imaging with the International LOFAR Telescope
A decade of sub-arcsecond imaging with the International LOFAR Telescope is reviewed, covering calibration, scientific highlights, and future surveys.
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