Diffuse radio emission from galaxy clusters

RJ Van Weeren, F de Gasperin, H Akamatsu… - Space Science …, 2019 - Springer
In a growing number of galaxy clusters diffuse extended radio sources have been found.
These sources are not directly associated with individual cluster galaxies. The radio …

[HTML][HTML] The LOFAR Two-metre Sky Survey-I. Survey description and preliminary data release

TW Shimwell, HJA Röttgering, PN Best… - Astronomy & …, 2017 - aanda.org
The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120–168 MHz imaging survey that will
eventually cover the entire northern sky. Each of the 3170 pointings will be observed for 8 h …

The Planck clusters in the LOFAR sky-I. LoTSS-DR2: new detections and sample overview

A Botteon, TW Shimwell, R Cassano, V Cuciti… - Astronomy & …, 2022 - aanda.org
Context. Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM)
and manifest themselves as diffuse sources of synchrotron emission observable at radio …

LOFAR observations of galaxy clusters in HETDEX-Extraction and self-calibration of individual LOFAR targets

RJ Van Weeren, TW Shimwell, A Botteon… - Astronomy & …, 2021 - aanda.org
Diffuse cluster radio sources, in the form of radio halos and relics, reveal the presence of
cosmic rays and magnetic fields in the intracluster medium (ICM). These cosmic rays are …

Galaxy clusters enveloped by vast volumes of relativistic electrons

V Cuciti, F de Gasperin, M Brüggen, F Vazza… - Nature, 2022 - nature.com
The central regions of galaxy clusters are permeated by magnetic fields and filled with
relativistic electrons. When clusters merge, the magnetic fields are amplified and relativistic …

A giant radio bridge connecting two galaxy clusters in Abell 1758

A Botteon, RJ Van Weeren, G Brunetti… - Monthly Notices of …, 2020 - academic.oup.com
Collisions between galaxy clusters dissipate enormous amounts of energy in the intracluster
medium (ICM) through turbulence and shocks. In the process, Mpc-scale diffuse synchrotron …

Radio halos in a mass-selected sample of 75 galaxy clusters-II. Statistical analysis

V Cuciti, R Cassano, G Brunetti, D Dallacasa… - Astronomy & …, 2021 - aanda.org
Context. Many galaxy clusters host megaparsec-scale diffuse radio sources called radio
halos. Their origin is tightly connected to the processes that lead to the formation of clusters …

Second-order fermi reacceleration mechanisms and large-scale synchrotron radio emission in intracluster bridges

G Brunetti, F Vazza - Physical Review Letters, 2020 - APS
Radio observations at low frequencies with the low frequency array (LOFAR) start
discovering gigantic radio bridges connecting pairs of massive galaxy clusters. These …

A MeerKAT-meets-LOFAR study of Abell 1413: a moderately disturbed non-cool-core cluster hosting a~ 500 kpc 'mini'-halo

CJ Riseley, N Biava, G Lusetti… - Monthly Notices of …, 2023 - academic.oup.com
Many relaxed cool-core clusters host diffuse radio emission on scales of hundreds of
kiloparsecs: mini-haloes. However, the mechanism responsible for generating them, as well …

Exploring diffuse radio emission in galaxy clusters and groups with uGMRT and SKA

S Paul, R Kale, A Datta, A Basu, S Sur… - Journal of Astrophysics …, 2023 - Springer
Diffuse radio emission has been detected in a considerable number of galaxy clusters and
groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic …