654 citations · 12.9k across the 278 of their papers we have counts for
34 papers · 1 filter
A MeerKAT-meets-LOFAR Study of MS 1455.0+2232: A 590 kiloparsec 'Mini'-Halo in a Sloshing Cool-Core Cluster
C. J. Riseley, K. Rajpurohit, F. Loi +13
Radio mini-haloes are poorly-understood, moderately-extended diffuse radio sources that trace the presence of magnetic fields and relativistic electrons on scales of hundreds of ki…
A LOFAR view into the stormy environment of the galaxy cluster 2A0335+096
A. Ignesti, G. Brunetti, T. Shimwell +10
Radio observations represent a powerful probe of the physics occurring in the intracluster medium (ICM) because they trace the relativistic cosmic rays in the cluster magnetic fiel…
Deep low-frequency radio observations of Abell 2256 I: The filamentary radio relic
K. Rajpurohit, R. J. van Weeren, M. Hoeft +22
We present deep and high fidelity images of the merging galaxy cluster Abell 2256 at low frequencies, using the upgraded Giant Metrewave Radio Telescope (uGMRT) and LOw-Frequency A…
GASP XXXVIII: The LOFAR-MeerKAT-VLA view on the non-thermal side of a jellyfish galaxy
Alessandro Ignesti, Benedetta Vulcani, Bianca M. Poggianti +18
Ram pressure stripping is a crucial evolutionary driver for cluster galaxies. It is thought to be able to accelerate the evolution of their star formation, trigger the activity of…
A snapshot of the oldest AGN feedback phases
M. Brienza, T. W. Shimwell, F. de Gasperin +19
Active Galactic Nuclei (AGN) inject large amounts of energy into their host galaxies and surrounding environment, shaping their properties and evolution. In particular, AGN jets in…
The TESS View of LOFAR Radio-Emitting Stars
Benjamin J. S. Pope, Joseph R. Callingham, Adina D. Feinstein +4
The recent detection of the M dwarf GJ 1151 at 144 MHz low radio frequencies using LOFAR has been interpreted as evidence of an exoplanet magnetically interacting with its host sta…
Low frequency radio properties of the quasar population
A. J. Gloudemans, K. J. Duncan, H. J. A. Röttgering +12
Optically luminous quasars at are important probes of super-massive black hole (SMBH) formation. With new and future radio facilities, the discovery of the brightest low-fr…
The population of M dwarfs observed at low radio frequencies
J. R. Callingham, H. K. Vedantham, T. W. Shimwell +12
Coherent low-frequency ( MHz) radio emission from stars encodes the conditions of the outer corona, mass-ejection events, and space weather. Previous low-frequency se…
The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz
N. Biava, F. de Gasperin, A. Bonafede +17
Diffuse radio emission at the centre of galaxy clusters has been observed both in merging clusters on scales of Mpc, called giant radio haloes, and in relaxed systems with a cool-c…
The LOFAR LBA Sky Survey: Deep Fields I. The Boötes Field
W. L. Williams, F. de Gasperin, M. J. H. Hardcastle +9
We present the first sub-mJy ( mJy beam) survey to be completed below 100 MHz, which is over an order of magnitude deeper than previously achieved for widefield…
CHANG-ES XXIII: Influence of a galactic wind in NGC 5775
G. H. Heald, V. Heesen, S. S. Sridhar +22
We present new radio continuum images of the edge-on starburst galaxy NGC 5775, from LOFAR (140 MHz) and the Karl G. Jansky Very Large Array CHANG-ES survey (1500 MHz). We trace th…
Unmasking the history of 3C 293 with LOFAR sub-arcsecond imaging
Pranav Kukreti, Raffaella Morganti, Timothy W. Shimwell +10
Active galactic nuclei (AGNs) show episodic activity, evident in galaxies that exhibit restarted radio jets. These restarted jets can interact with their environment, leaving signa…
Origin of the ring structures in Hercules A -- Sub-arcsecond 144 MHz to 7 GHz observations
R. Timmerman, R. J. van Weeren, J. R. Callingham +18
The prominent radio source Hercules A features complex structures in its radio lobes. Although it is one of the most comprehensively studied sources in the radio sky, the origin of…
Sub-arcsecond imaging with the International LOFAR Telescope I. Foundational calibration strategy and pipeline
L. K. Morabito, N. J. Jackson, S. Mooney +71
[abridged] The International LOFAR Telescope is an interferometer with stations spread across Europe. With baselines of up to ~2,000 km, LOFAR has the unique capability of achievin…
The eROSITA Final Equatorial-Depth Survey (eFEDS): LOFAR view of brightest cluster galaxies and AGN feedback
T. Pasini, M. Brüggen, D. N. Hoang +15
During the performance verification phase of the SRG/eROSITA telescope, the eROSITA Final Equatorial-Depth Survey (eFEDS) has been carried out. It covers a 140 deg field locate…
Coherent radio emission from a population of RS Canum Venaticorum systems
S. E. B. Toet, H. K. Vedantham, J. R. Callingham +5
Coherent radio emission from stars can be used to constrain fundamental coronal plasma parameters, such as plasma density and magnetic field strength. It is also a probe of chromos…
Evidence for cold plasma in planetary nebulae from radio observations with the LOw Frequency ARray (LOFAR)
Marcin Hajduk, Marijke Haverkorn, Timothy Shimwell +6
We present observations of planetary nebulae with the LOw Frequency ARray (LOFAR) between 120 and 168 MHz. The images show thermal free-free emission from the nebular shells. We ha…
Late-Time Evolution and Modeling of the Off-Axis Gamma-ray Burst Candidate FIRST J141918.9+394036
K. P. Mooley, B. Margalit, C. J. Law +12
We present new radio and optical data, including very long baseline interferometry, as well as archival data analysis, for the luminous decades-long radio transient FIRST J141918.9…
Limits on long-time-scale radio transients at 150 MHz using the TGSS ADR1 and LoTSS DR2 catalogues
Iris de Ruiter, Guillaume Leseigneur, Antonia Rowlinson +4
We present a search for transient radio sources on timescales of 2 to 9 yr at 150 MHz. This search is conducted by comparing the first Alternative Data Release of the TIFR GMRT Sky…
A 3.5 Mpc-long radio relic in the galaxy cluster ClG 0217+70
D. N. Hoang, X. Zhang, C. Stuardi +14
Mega-parsec scale radio sources in the form of halos and relics are often detected in dynamically disturbed galaxy clusters. Although they are associated with merger-induced turbul…
Discovery of a radio halo (and relic) in a M cluster
A. Botteon, R. Cassano, R. J. van Weeren +12
Radio halos are diffuse synchrotron sources observed in dynamically unrelaxed galaxy clusters. Current observations and models suggest that halos trace turbulent regions in the int…
Radio relics in PSZ2 G096.88+24.18: A connection with pre-existing plasma
A. Jones, F. de Gasperin, V. Cuciti +10
Giant radio relics are arc-like structures of diffuse, non-thermal synchrotron radiation that trace shock waves induced by galaxy cluster mergers. The particle (re-)acceleration me…
Large closed-field corona of WX UMa evidenced from radio observations
I. Davis, H. K. Vedantham, J. R. Callingham +5
The space-weather conditions that result from stellar winds significantly impact the habitability of exoplanets. The conditions can be calculated from first principles if the neces…
LoTSS jellyfish galaxies: I. Radio tails in low redshift clusters
I. D. Roberts, R. J. van Weeren, S. L. McGee +6
In this paper we present a large sample of jellyfish galaxies in low redshift clusters (z<0.05), identified through 120-168 MHz radio continuum from the LOFAR Two-metre Sky Survey…