654 citations · 12.9k across the 278 of their papers we have counts for
32 papers · 1 filter
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
Shoko Jin, Scott C. Trager, Gavin B. Dalton +212
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree…
Magnetic fields and relativistic electrons fill entire galaxy cluster
A. Botteon, R. J. van Weeren, G. Brunetti +12
The hot plasma within merging galaxy clusters is predicted to be filled with shocks and turbulence that may convert part of their kinetic energy into relativistic electrons and mag…
Discovery of 24 radio-bright quasars at using low-frequency radio observations
A. J. Gloudemans, K. J. Duncan, A. Saxena +18
High redshift quasars () that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio so…
An intergalactic medium temperature from a giant radio galaxy
Martijn S. S. L. Oei, Reinout J. van Weeren, Martin J. Hardcastle +5
The warm-hot intergalactic medium (warm-hot IGM, or WHIM) pervades the filaments of the Cosmic Web and harbours half of the Universe's baryons. The WHIM's thermodynamic properties…
Barbell-shaped giant radio galaxy with ~100 kpc kink in the jet
Pratik Dabhade, Timothy W. Shimwell, Joydeep Bagchi +8
We present for the first time a study of peculiar giant radio galaxy (GRG) J223301+131502 using deep multi-frequency radio observations from GMRT (323, 612, and 1300 MHz) and LOFAR…
The Planck clusters in the LOFAR sky. III. LoTSS-DR2: Dynamic states and density fluctuations of the intracluster medium
X. Zhang, A. Simionescu, F. Gastaldello +19
The footprint of LoTSS-DR2 covers 309 PSZ2 galaxy clusters, 83 of which host a radio halo and 26 host a radio relic(s). It provides us an excellent opportunity to statistically stu…
Testing afterglow models of FRB 200428 with early post-burst observations of SGR 1935+2154
A. J. Cooper, A. Rowlinson, R. A. M. J. Wijers +8
We present LOFAR imaging observations from the April/May 2020 active episode of magnetar SGR 1935+2154. We place the earliest radio limits on persistent emission following the low-…
A deep study of A399-401: An application for wide-field facet calibration
J. M. G. H. J. de Jong, R. J. van Weeren, A. Botteon +6
We examine the particle acceleration mechanism in the Mpc-scale bridge between Abell 399 and Abell 401 and assess in particular if the synchrotron emission originates from first-or…
Measuring the giant radio galaxy length distribution with the LoTSS
Martijn S. S. L. Oei, Reinout J. van Weeren, Aivin R. D. J. G. I. B. Gast +6
Radio galaxies are luminous structures created by the jets of supermassive black holes, and consist of atomic nuclei, relativistic electrons, and magnetic fields. In exceptional ca…
Walk on the Low Side: LOFAR explores the low-frequency radio emission of GASP jellyfish galaxies
Alessandro Ignesti, Benedetta Vulcani, Bianca M. Poggianti +13
Jellyfish galaxies, characterized by long filaments of stripped interstellar medium extending from their disks, are the prime laboratories to study the outcomes of ram pressure str…
Abell 1033: Radio halo and gently reenergized tail at 54 MHz
H. W. Edler, F. de Gasperin, G. Brunetti +7
Abell 1033 is a merging galaxy cluster of moderate mass (). It hosts a broad variety of diffuse radio sources linked to different astroph…
The redshift evolution of extragalactic magnetic fields
Valentin Pomakov, Shane O'Sullivan, Marcus Bruggen +7
Faraday rotation studies of distant radio sources can constrain the evolution and the origin of cosmic magnetism. We use data from the LOFAR Two Metre Sky Survey: Data Release 2 (L…
Diffuse radio source candidate in CIZA J1358.9-4750
Kohei Kurahara, Takuya Akahori, Ruta Kale +11
We report on results of our upgraded Giant Metrewave Radio Telescope (uGMRT) observations for an early-stage merging galaxy cluster, CIZA J1358.9-4750 (CIZA1359), in Band-3 (300--5…
Possible discovery of Calvera's supernova remnant
M. Arias, A. Botteon, C. G. Bassa +13
We report the discovery of a ring of low surface brightness radio emission around the Calvera pulsar, a high Galactic latitude, isolated neutron star, in the LOFAR Two-metre Sky Su…
Identifying active galactic nuclei via brightness temperature with sub-arcsecond International LOFAR Telescope observations
Leah K. Morabito, F. Sweijen, J. F. Radcliffe +11
Identifying active galactic nuclei (AGN) and isolating their contribution to a galaxy's energy budget is crucial for studying the co-evolution of AGN and their host galaxies. Brigh…
A machine learning classifier for LOFAR radio galaxy cross-matching techniques
Lara Alegre, Jose Sabater, Philip Best +7
New-generation radio telescopes like LOFAR are conducting extensive sky surveys, detecting millions of sources. To maximise the scientific value of these surveys, radio source comp…
Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group
F. Mernier, N. Werner, J. Bagchi +6
Observed in a significant fraction of clusters and groups of galaxies, diffuse radio synchrotron emission reveals the presence of relativistic electrons and magnetic fields permeat…
Diffuse radio emission from non-Planck galaxy clusters in the LoTSS-DR2 fields
D. N. Hoang, M. Brüggen, A. Botteon +17
The presence of large-scale magnetic fields and ultra-relativistic electrons in the intra-cluster medium (ICM) is confirmed through the detection of diffuse radio synchrotron sourc…
Seeing the forest and the trees: a radio investigation of the ULIRG Mrk 273
Pranav Kukreti, Raffaella Morganti, Marco Bondi +19
Galaxy mergers have been observed to trigger nuclear activity by feeding gas to the central supermassive black hole. One such class of objects are Ultra Luminous InfraRed Galaxies…
Nearby galaxies in LoTSS-DR2: insights into the non-linearity of the radio-SFR relation
V. Heesen, M. Staffehl, A. Basu +24
Context. Cosmic rays and magnetic fields are key ingredients in galaxy evolution, regulating both stellar feedback and star formation. Their properties can be studied with low-freq…
Searching for pulsars associated with polarised point sources using LOFAR: Initial discoveries from the TULIPP project
C. Sobey, C. G. Bassa, S. P. O'Sullivan +15
Discovering radio pulsars, particularly millisecond pulsars (MSPs), is important for a range of astrophysical applications, such as testing theories of gravity or probing the magne…
The Coma cluster at LOFAR frequencies II: the halo, relic, and a new accretion relic
A. Bonafede, G. Brunetti, L. Rudnick +26
We present LOw Frequency ARray observations of the Coma cluster field at 144\,MHz. The cluster hosts one of the most famous radio halos, a relic, and a low surface-brightness bridg…
Faraday tomography of LoTSS-DR2 data: I. Faraday moments in the high-latitude outer Galaxy and revealing Loop III in polarisation
Ana Erceg, Vibor Jelić, Marijke Haverkorn +8
Observations of synchrotron emission at low radio frequencies reveal a labyrinth of polarised Galactic structures. However, the explanation for the wealth of structures remains unc…
The LOFAR Two-metre Sky Survey -- V. Second data release
T. W. Shimwell, M. J. Hardcastle, C. Tasse +103
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 ap…