activity
20132025
most citedSystematic effects in LOFAR data: A unified calibration strategy

211 citations · 781 across the 16 of their papers we have counts for

collaborators

16 papers

astro-ph.IM2025★ 2 cited

Direction-Dependent Faraday Synthesis

Victor Gustafsson, Marcus Brüggen, Cyril Tasse +3

Modern radio interferometers enable high-resolution polarization imaging, offering insights into cosmic magnetism through Rotation Measure (RM) synthesis. Traditional 2+1D RM synth…

astro-ph.CO2025★ 10 cited

Limits and challenges of the detection of cluster-scale diffuse radio emission at high redshift: The Massive and Distant Clusters of WISE Survey (MaDCoWS) in LoTSS-DR2

G. Di Gennaro, M. Brüggen, E. Moravec +14

Diffuse radio emission in galaxy clusters is a tracer of ultra-relativistic particles and G-level magnetic fields, and is thought to be triggered by cluster merger events. In th…

astro-ph.CO2024★ 4 cited

The ViCTORIA project: description of a multi-frequency radio survey of the Virgo galaxy cluster

F. de Gasperin, H. W. Edler, A. Boselli +8

The Virgo cluster is the closest richest nearby galaxy cluster. It is in the formation process, with a number of sub-clusters undergoing merging and interactions. Although a great…

astro-ph.CO2024★ 11 cited

Magnetic fields in the outskirts of PSZ2 G096.88+24.18 from depolarization analysis of radio relics

E. De Rubeis, C. Stuardi, A. Bonafede +4

In this paper, we investigate the polarization properties of the double radio relics in PSZ2 G096.88+24.18 using the rotation measure synthesis, and try to constrain the characteri…

astro-ph.IM2023★ 40 cited

The LOFAR LBA Sky Survey II. First data release

F. de Gasperin, H. W. Edler, W. L. Williams +27

The Low Frequency Array (LOFAR) is the only existing radio interferometer able to observe at ultra-low frequencies (<100 MHz) with high resolution (<15") and high sensitivity (<1 m…

astro-ph.IM2021★ 17 cited

Investigating ionospheric calibration for LOFAR 2.0 with simulated observations

H. W. Edler, F. de Gasperin, D. Rafferty

A number of hardware upgrades for the Low-Frequency Array (LOFAR) are currently under development. These upgrades are collectively referred to as the LOFAR 2.0 upgrade. The first s…

astro-ph.GA2020★ 29 cited

The best of both worlds: Combining LOFAR and Apertif to derive resolved radio spectral index images

R. Morganti, T. A. Oosterloo, M. Brienza +36

Supermassive black holes at the centres of galaxies can cycle through periods of activity and quiescence. Characterising the duty cycle of active galactic nuclei is crucial for und…

astro-ph.GA2020★ 29 cited

Exemplary Merging Clusters: Weak-lensing and X-ray Analysis of the Double Radio Relic Merging Galaxy Clusters MACS 1752.0+4440 and ZWCL 1856.8+6616

Kyle Finner, Kim HyeongHan, M. James Jee +8

The investigation of merging galaxy clusters that exhibit radio relics is strengthening our understanding of the formation and evolution of galaxy clusters, the nature of dark matt…

astro-ph.GA2019★ 49 cited

Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters

Avery F. Garon, Lawrence Rudnick, O. Ivy Wong +9

We study the impact of cluster environment on the morphology of a sample of 4304 extended radio galaxies from Radio Galaxy Zoo. A total of 87% of the sample lies within a projected…

astro-ph.IM2018★ 211 cited

Systematic effects in LOFAR data: A unified calibration strategy

F. de Gasperin, T. J. Dijkema, A. Drabent +17

Context: New generation low-frequency telescopes are exploring a new parameter space in terms of depth and resolution. The data taken with these interferometers, for example with t…

astro-ph.IM2018★ 75 cited

The effect of the ionosphere on ultra-low frequency radio-interferometric observations

F. de Gasperin, M. Mevius, D. A. Rafferty +2

The ionosphere is the main driver of a series of systematic effects that limit our ability to explore the low frequency (<1 GHz) sky with radio interferometers. Its effects become…

astro-ph.HE2017★ 43 cited

An image-based search for pulsars among Fermi unassociated LAT sources

D. A. Frail, P. S. Ray, K. P. Mooley +9

We describe an image-based method that uses two radio criteria, compactness and spectral index, to identify promising pulsar candidates among Fermi Large Area Telescope (LAT) unass…

astro-ph.GA2017★ 51 cited

Radio Galaxy Zoo: A Search for Hybrid Morphology Radio Galaxies

A. D. Kapinska, I. Terentev, O. I. Wong +14

Hybrid morphology radio sources are a rare type of radio galaxy that display different Fanaroff-Riley classes on opposite sides of their nuclei. To enhance the statistical analysis…

astro-ph.GA2017★ 19 cited

Studying the late evolution of a radio-loud AGN in a galaxy group with LOFAR

Federica Savini, Annalisa Bonafede, Marcus Brüggen +17

Feedback by radio-loud active galactic nuclei (AGN) in galaxy groups is not fully understood. Open questions include the duty cycle of the AGN, the spatial extent of the radio lobe…

astro-ph.CO2017★ 30 cited

Radio Galaxy Zoo: Cosmological Alignment of Radio Sources

O. Contigiani, F. de Gasperin, G. K. Miley +6

We study the mutual alignment of radio sources within two surveys, FIRST and TGSS. This is done by producing two position angle catalogues containing the preferential directions of…

astro-ph.IM2013★ 161 cited

Calibrating High-Precision Faraday Rotation Measurements for LOFAR and the Next Generation of Low-Frequency Radio Telescopes

C. Sotomayor-Beltran, C. Sobey, J. W. T. Hessels +77

Faraday rotation measurements using the current and next generation of low-frequency radio telescopes will provide a powerful probe of astronomical magnetic fields. However, achiev…