activity
20082026
most citedThe LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release

654 citations · 12.9k across the 278 of their papers we have counts for

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46 papers · 1 filter

astro-ph.HE2026

Mapping the emission and spectral properties of the FRI radio galaxy 3C 449 with LOFAR and the VLA

Luca Ricci, Luisa Ostorero, Raffaella Morganti +3

The jets and lobes of nearby radio galaxies are ideal laboratories to explore the spectral and dynamical evolution of the radio-emitting plasma that emanates from active galactic n…

astro-ph.HE2025

Pulsars identified in the LOFAR Two-metre Sky Survey at 144 MHz

G. A. C. Rijkers, C. G. Bassa, J. R. Callingham +1

We present the astrometric identification of 80 known radio pulsars as unresolved continuum sources detected at 144 MHz in the second data release of the LOFAR Two-metre Sky Survey…

astro-ph.HE2025★ 3 cited

The Advanced X-ray Imaging Satellite (AXIS) Community Science Book

Michael Koss, Nafisa Aftab, Steven W. Allen +395

The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…

astro-ph.HE2025

Strongly polarised radio pulses from a new white-dwarf-hosting long-period transient

Sanne Bloot, Harish K. Vedantham, Cees G. Bassa +6

Long-period transients (LPTs) are a new and enigmatic class of objects that produce bright pulsations in the radio, with periods far exceeding those seen in rotationally powered pu…

astro-ph.HE2024★ 2 cited

New supernova remnant candidates in the LOFAR Two Metre Sky Survey

K. Tsalapatas, M. Arias, T. Shimwell +3

In spite of their key role in galaxy evolution and several decades of observational efforts, the census of supernova remnants (SNRs) in our Galaxy remains incomplete. Theoretical p…

astro-ph.HE2024★ 36 cited

Sporadic radio pulses from a white dwarf binary at the orbital period

I. de Ruiter, K. M. Rajwade, C. G. Bassa +14

Recent observations have revealed rare, previously unknown flashes of cosmic radio waves lasting from milliseconds to minutes, and with periodicity of minutes to an hour. These tra…

astro-ph.HE2024★ 9 cited

Probing particle acceleration in Abell 2256: from to 16 MHz to gamma rays

E. Osinga, R. J. van Weeren, G. Brunetti +9

Merging galaxy clusters often host spectacular diffuse radio synchrotron sources. These sources can be explained by a non-thermal pool of relativistic electrons accelerated by shoc…

astro-ph.HE2024★ 18 cited

The LOFAR-eFEDS survey: The incidence of radio and X-ray AGN and the disk-jet connection

Z. Igo, A. Merloni, D. Hoang +15

Radio jets are present in a diverse sample of AGN. However, the mechanisms of jet powering are not fully understood, and it is yet unclear to what extent they obey mass-invariant s…

astro-ph.HE2024

On the Particle Acceleration Mechanisms in a Double Radio Relic Galaxy Cluster, Abell 1240

Arnab Sarkar, Felipe Andrade-Santos, Reinout J. van Weeren +12

We present a 368 ks deep Chandra observation of Abell~1240, a binary merging galaxy cluster at a redshift of 0.195 with two Brightest Cluster Galaxies (BCGs) may have passed each o…

astro-ph.HE2023★ 4 cited

A LOFAR prompt search for radio emission accompanying X-ray flares in GRB 210112A

A. Hennessy, R. L. C. Starling, A. Rowlinson +14

The composition of relativistic gamma-ray burst (GRB) jets and their emission mechanisms are still debated, and they could be matter or magnetically dominated. One way to distingui…

astro-ph.HE2023★ 12 cited

A search for inter-cluster filaments with LOFAR and eROSITA

D. N. Hoang, M. Brüggen, T. W. Shimwell +13

Cosmological simulations predict the presence of warm hot thermal gas in the cosmic filaments that connect galaxy clusters. This gas is thought to constitute an important part of t…

astro-ph.HE2023★ 4 cited

A LOFAR sample of luminous compact sources coincident with nearby dwarf galaxies

D. Vohl, H. K. Vedantham, J. W. T. Hessels +5

The vast majority of extragalactic compact continuum radio sources are associated with star formation or jets from (super)massive black holes and, as such, are more likely to be fo…

astro-ph.HE2022★ 9 cited

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-…

astro-ph.HE2022★ 1 cited

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…

astro-ph.HE2022★ 7 cited

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…

astro-ph.HE2022

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…

astro-ph.HE2022★ 24 cited

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…

astro-ph.HE2022★ 2 cited

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…

astro-ph.HE2021★ 33 cited

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…

astro-ph.HE2021★ 54 cited

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…

astro-ph.HE2021★ 16 cited

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…

astro-ph.HE2021★ 6 cited

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…

astro-ph.HE2021★ 27 cited

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…

astro-ph.HE2021★ 21 cited

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…