A 600 kpc complex radio source at the center of Abell 3718 discovered by the EMU and POSSUM surveys
arXiv:2302.03709 · doi:10.1051/0004-6361/202245640
Abstract
Multifrequency studies of galaxy clusters are crucial for inferring their dynamical states and physics. Moreover, these studies allow us to investigate cluster-embedded sources, whose evolution is affected by the physical and dynamical condition of the cluster itself. So far, these kinds of studies have been preferentially conducted on clusters visible from the northern hemisphere due to the high-fidelity imaging capabilities of ground-based radio interferometers located there. In this paper, we conducted a multifrequency study of the poorly known galaxy cluster Abell 3718. We investigated the unknown origin of an extended radio source with a length of 612 kpc at 943 MHz detected in images from the Evolutionary Map of the Universe (EMU) and POlarisation Sky Survey of the Universe's Magnetism (POSSUM) surveys. We analyzed optical and X-ray data to infer the dynamical state of the cluster and, in particular, the merger activity. We conducted a radio spectral index study from 943 MHz up to 9 GHz. We also evaluated the polarization properties of the brightest cluster-embedded sources to understand if they are related to the radio emission observed on larger scales. [Abstract truncated due to arxiv limit! Please see the pdf version]
12 pages, 10 figures; accepted for publication by A&A
References in corpus (38)
- Shocks and cold fronts in galaxy clusters
- Diffuse Radio Emission from Galaxy Clusters
- The Dark Energy Survey Data Release 2
- Australian Square Kilometre Array Pathfinder: I. System Description
- The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
- MUSE sneaks a peek at extreme ram-pressure stripping events. I. A kinematic study of the archetypal galaxy ESO137-001
- A radio ridge connecting two galaxy clusters in a filament of the cosmic web
- Do radio core-halos and cold fronts in non major merging clusters originate from the same gas sloshing?
- X-Ray morphological analysis of the Planck ESZ clusters
- Gentle re-energisation of electrons in merging galaxy clusters
- The Australian Square Kilometre Array Pathfinder: Performance of the Boolardy Engineering Test Array
- The beautiful mess in Abell 2255
- LOFAR discovery of an ultra-steep radio halo and giant head-tail radio galaxy in Abell 1132
- The Abell 3391/95 galaxy cluster system: A 15 Mpc intergalactic medium emission filament, a warm gas bridge, infalling matter clumps, and (re-) accelerated plasma discovered by combining SRG/eROSITA data with ASKAP/EMU and DECam data
- Radio footprints of a minor merger in the Shapley Supercluster: From supercluster down to galactic scales
- The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz
- Intracluster magnetic filaments and an encounter with a radio jet
- Radio observations of the merging galaxy cluster system Abell 3391-Abell 3395
- A joint SZ-Xray-optical analysis of the dynamical state of 288 massive galaxy clusters
- Threads, Ribbons, and Rings in the Radio Galaxy IC 4296
- Early Science from POSSUM: Shocks, turbulence, and a massive new reservoir of ionised gas in the Fornax cluster
- The galaxy group NGC 507: newly detected AGN remnant plasma transported by sloshing
- Radio fossils, relics, and haloes in Abell 3266: cluster archaeology with ASKAP-EMU and the ATCA
- MWA and ASKAP observations of atypical radio-halo-hosting galaxy clusters: Abell 141 and Abell 3404
- A MeerKAT-meets-LOFAR Study of MS 1455.0+2232: A 590 kiloparsec 'Mini'-Halo in a Sloshing Cool-Core Cluster
- A candle in the wind: a radio filament in the core of the A3562 galaxy cluster
- Two striking head-tail galaxies in the galaxy cluster IIZW108: insights into transition to turbulence, magnetic fields and particle re-acceleration
- Giant Metrewave Radio Telescope Observations of Head-Tail Radio Galaxies
- The eROSITA view of the Abell 3391/95 field: The Northern Clump. The largest infalling structure in the longest known gas filament observed with eROSITA, XMM-Newton, and Chandra
- Turbulent magnetic fields in the merging galaxy cluster MACS J0717.5+3745: polarization analysis
- Nonthermal phenomena in the center of Abell 1775: An 800 kpc head-tail, revived fossil plasma and slingshot radio halo
- A LOFAR view into the stormy environment of the galaxy cluster 2A0335+096
- SPT-CL J2032-5627: a new Southern double relic cluster observed with ASKAP
- Populations of Magnetized Filaments in the Intracluster Medium and the Galactic Center
- A new look at old friends. I. Imaging classical radio galaxies with uGMRT and MeerKAT
- Multiwavelength view of SPT-CL J2106-5844. The radio galaxies and the thermal and relativistic plasmas in a massive galaxy cluster merger at z~1.13
- Collimation of the kiloparsec-scale radio jets in NGC 2663
- A depolarizing HI tidal tail in the western lobe of Fornax A