MaDCoWS clusters richness

Diffuse radio emission in galaxy clusters is a tracer of ultra-relativistic particles and uG-level magnetic fields, and is thought to be triggered by cluster merger events. In the distant Universe (i.e. z>0.6), such sources have been observed only in a handful of systems, and their study is important to understand the evolution of large-scale magnetic fields over the cosmic time. Previous studies of nine Planck clusters up to z~0.9 suggest a fast amplification of cluster-scale magnetic fields, at least up to half of the current Universe's age, and steep spectrum cluster scale emission, in line with particle re-acceleration due to turbulence. In this paper, we investigate the presence of diffuse radio emission in a larger sample of galaxy clusters reaching even higher redshifts (i.e. z?~1). We selected clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS) with richness {lambda}15>40 covering the area of the second data release of the LOFAR Two-Meter Sky Survey (LoTSS-DR2) at 144MHz. These selected clusters are in the redshift range 0.78-1.53 (with a median value of 1.05). We detect the possible presence of diffuse radio emission, with the largest linear sizes of 350-500kpc, in five out of the 56 clusters in our sample. If this diffuse radio emission is due to a radio halo, these radio sources lie on or above the scatter of the P_V_-M500 radio halo correlations (at 150MHz and 1.4GHz) found at z40)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/695/A215
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A215
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A215
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/695/A215
Provenance
Creator Di Gennaro G.; Bruggen M.; Moravec E.; Di Mascolo L.; Van Weeren R.J.,Brunetti G.; Cassano R.; Botteon A.; Churazov E.; Khabibullin I.,Lyskova N.; De Gasperin F.; Hardcastle M.J.; Rottgering H.J.A.,Shimwell T.; Sunyaev R.; Stanford A.
Publisher CDS
Publication Year 2025
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics