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Aims. With the recent preliminary release of the LOFAR LBA Sky Survey (LoLSS), the first wide-area, ultra-low frequency observations from LOFAR were published. Our aim is to combine this data set with other surveys at higher frequencies to…

Instrumentation and Methods for Astrophysics · Physics 2023-06-22 Lukas Böhme , Dominik J. Schwarz , Francesco de Gasperin , Huub J. A. Röttgering , Wendy L. Williams

We present LOFAR high-band data over the frequency range 115-189 MHz for the X-ray binary SS 433, obtained in an observing campaign from 2013 February - 2014 May. Our results include a deep, wide-field map, allowing a detailed view of the…

Feedback from radio AGN jets is regularly implemented into contemporary models of galaxy evolution to offset radiative cooling in the large-scale environments in which they typically reside. While previous studies suggest that the total…

Astrophysics of Galaxies · Physics 2026-04-23 J. C. S. Pierce , F. Sweijen , M. J. Hardcastle , L. K. Morabito , H. J. A. Röttgering , R. D. Baldi

The LOFAR Two-Metre Sky Survey (LoTSS) is an invaluable new tool for investigating the properties of sources at low frequencies and has helped to open up the study of galaxy populations in this regime. In this work, we perform a search for…

High Energy Astrophysical Phenomena · Physics 2023-07-12 R. A. J. Eyles-Ferris , R. L. C. Starling

The effects of feedback from high luminosity radio-loud AGN have been extensively discussed in the literature, but feedback from low-luminosity radio-loud AGN is less well understood. The advent of high sensitivity, high angular resolution,…

The Low Frequency Array (LOFAR) Two-metre Sky Survey (LoTSS) is a low-frequency radio continuum survey of the Northern sky at an unparalleled resolution and sensitivity. In order to fully exploit this huge dataset and those produced by the…

In this article we present deep, high-resolution radio interferometric observations at 153 MHz to complement the extensively studied NOAO Bootes field. We provide a description of the observations, data reduction and source catalog…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 H. T. Intema , R. J. van Weeren , H. J. A. Rottgering , D. V. Lal

We combine the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) second data release (DR2) catalogue with gravitational lensing maps from the Cosmic Microwave Background (CMB) to place constraints on the bias evolution of LoTSS radio…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-17 S. J. Nakoneczny , D. Alonso , M. Bilicki , D. J. Schwarz , C. L. Hale , A. Pollo , C. Heneka , P. Tiwari , J. Zheng , M. Brüggen , M. J. Jarvis , T. W. Shimwell

The XMM Large Scale Structure Survey (XMM-LSS) is a major project to map the large scale structure of the universe out to cosmological distances. An 8 degree by 8 degree region will be surveyed by XMM with planned optical follow-up to…

In order to determine the relationship between the faint X-ray and faint radio source populations, and hence to help understand the X-ray and radio emission mechanisms in those faint source populations, we have made a deep 1.4GHz Very Large…

Astrophysics · Physics 2009-11-10 N. Seymour , I. M. McHardy , K. F. Gunn

By combining high-sensitivity LOFAR 150MHz, uGMRT 400MHz and 1,250MHz, GMRT 610MHz, and VLA 5GHz data in the ELAIS-N1 field, we study the radio spectral properties of radio-detected star-forming galaxies (SFGs) at observer-frame frequencies…

We use the LOFAR Two-metre Sky Survey (LoTSS) Data Release I to identify the groups of galaxies (and individual galaxies) from the Hickson Compact Groups and Magnitude Limited Compact Groups samples that emit at the frequency of 150\,MHz,…

A deep survey of the European Large Area ISO Survey (ELAIS) field in the southern celestial hemisphere (hereinafter S1) has been carried out with the Australia Telescope Compact Array (ATCA) at 1.4 GHz. The S1 region, covering about 4…

Giant radio galaxies (GRGs), with extended structures reaching hundreds of kpc, are among the most spectacular examples of ejection of relativistic plasma from super-massive black holes. In this work, third of a series, we present LOw…

Diffuse radio emission in galaxy clusters is a tracer of ultra-relativistic particles and $\mu$G-level magnetic fields, and is thought to be triggered by cluster merger events. In the distant Universe (i.e. $z>0.6$), such sources have been…

We present observations of the European Large-Area {\it ISO} Survey-North 1 (ELAIS-N1) at 325 MHz using the Giant Metrewave Radio Telescope (GMRT), with the ultimate objective of identifying active galactic nuclei and starburst galaxies and…

Astrophysics · Physics 2009-11-13 S. K. Sirothia , M . Dennefeld , D. J. Saikia , H. Dole , F. Ricquebourg , J. Roland

A complete, flux density limited sample of 96 faint ($> 0.5$ mJy) radio sources is selected from the 10C survey at 15.7 GHz in the Lockman Hole. We have matched this sample to a range of multi-wavelength catalogues, including SERVS, SWIRE,…

Astrophysics of Galaxies · Physics 2015-09-30 I. H. Whittam , J. M. Riley , D. A. Green , M. J. Jarvis , M. Vaccari

Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM) and manifest themselves as diffuse sources of synchrotron emission observable at radio wavelengths, namely radio halos and radio relics. Although there is…

We present a new deep multi-frequency radio survey of two extragalactic fields observed with the Australia Telescope Compact Array (ATCA) as part of the SHORES project (Serendipitous H-ATLAS fields Observations of Radio Extragalactic…

In this data release from the LOFAR Two-metre Sky Survey (LoTSS) we present 120-168MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44$^\circ$30' and 1h00m +28$^\circ$00'…

Astrophysics of Galaxies · Physics 2022-02-25 T. W. Shimwell , M. J. Hardcastle , C. Tasse , P. N. Best , H. J. A. Röttgering , W. L. Williams , A. Botteon , A. Drabent , A. Mechev , A. Shulevski , R. J. van Weeren , L. Bester , M. Brüggen , G. Brunetti , J. R. Callingham , K. T. Chyży , J. E. Conway , T. J. Dijkema , K. Duncan , F. de Gasperin , C. L. Hale , M. Haverkorn , B. Hugo , N. Jackson , M. Mevius , G. K. Miley , L. K. Morabito , R. Morganti , A. Offringa , J. B. R. Oonk , D. Rafferty , J. Sabater , D. J. B. Smith , D. J. Schwarz , O. Smirnov , S. P. O'Sullivan , H. Vedantham , G. J. White , J. G. Albert , L. Alegre , B. Asabere , D. J. Bacon , A. Bonafede , E. Bonnassieux , M. Brienza , M. Bilicki , M. Bonato , G. Calistro Rivera , R. Cassano , R. Cochrane , J. H. Croston , V. Cuciti , D. Dallacasa , A. Danezi , R. J. Dettmar , G. Di Gennaro , H. W. Edler , T. A. Enßlin , K. L. Emig , T. M. O. Franzen , C. García-Vergara , Y. G. Grange , G. Gürkan , M. Hajduk , G. Heald , V. Heesen , D. N. Hoang , M. Hoeft , C. Horellou , M. Iacobelli , M. Jamrozy , V. Jelić , R. Kondapally , P. Kukreti , M. Kunert-Bajraszewska , M. Magliocchetti , V. Mahatma , K. Małek , S. Mandal , F. Massaro , Z. Meyer-Zhao , B. Mingo , R. I. J. Mostert , D. G. Nair , S. J. Nakoneczny , B. Nikiel-Wroczyński , E. Orrú , U. Pajdosz-Śmierciak , T. Pasini , I. Prandoni , H. E. van Piggelen , K. Rajpurohit , E. Retana-Montenegro , C. J. Riseley , A. Rowlinson , A. Saxena , C. Schrijvers , F. Sweijen , T. M. Siewert , R. Timmerman , M. Vaccari , J. Vink , J. L. West , A. Wołowska , X. Zhang , J. Zheng