New giant radio sources and underluminous radio halos in two galaxy clusters

Abstract

The aim of this work is to analyse the radio properties of the massive and dynamical disturbed clusters Abell 1451 and Zwcl 0634.1+4750, especially focusing on the possible presence of diffuse emission. We present new GMRT 320 MHz and JVLA 1.5 GHz observations of these two clusters. We found that both Abell 1451 and Zwcl 0634.1+4750 host a radio halo with a typical spectrum ($\alpha \sim 1-1.3$). Similarly to a few other cases reported in the recent literature, these radio halos are significantly fainter in radio luminosity with respect to the current radio power-mass correlations and they are smaller than classical giant radio halos. These underluminous sources might contribute to shed light on the complex mechanisms of formation and evolution of radio halos. Furthermore, we detected a candidate radio relic at large distance from the cluster center in Abell 1451 and a peculiar head tail radio galaxy in Zwcl 0634.1+4750, which might be interacting with a shock front.

15 pages, 13 figures, accepted for publication in A&A

References in corpus (20)

• Astrophysics Source Code Library
• On the connection between giant radio halos and cluster mergers
• A low-frequency radio halo associated with a cluster of galaxies
• GMRT Radio Halo Survey in galaxy clusters at z = 0.2 -- 0.4. II.The eBCS clusters and analysis of the complete sample
• The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
• GMRT Radio Halo Survey in galaxy clusters at z = 0.2 -- 0.4 I.The REFLEX sub--sample
• Statistics of Giant Radio Halos from Electron Reacceleration Models
• Shock Waves in Eulerian Cosmological Simulations: Main Properties and Acceleration of Cosmic Rays
• Cosmic rays and Radio Halos in galaxy clusters : new constraints from radio observations
• A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation
• Turbulence and Particle Acceleration in Giant Radio Haloes: the Origin of Seed Electrons
• New scaling relations in cluster radio halos and the re-acceleration model
• Relativistic protons in the Coma galaxy cluster: first gamma-ray constraints ever on turbulent reacceleration
• The Extended GMRT Radio Halo Survey II: Further results and analysis of the full sample
• Low-Frequency study of two clusters of galaxies: A2744 and A2219
• Wideband VLA Observations of Abell 2256 I: Continuum, Rotation Measure and Spectral Imaging
• Mpc-scale diffuse radio emission in two massive cool-core clusters of galaxies
• Head-Tail Galaxies: Beacons of High-Density Regions in Clusters
• Can giant radio halos probe the merging rate of galaxy clusters?
• ATCA observations of the MACS-Planck Radio Halo Cluster Project - I. New detection of a radio halo in PLCK G285.0-23.7

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• 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
• Nonthermal phenomena in the center of Abell 1775: An 800 kpc head-tail, revived fossil plasma and slingshot radio halo
• A Massive Cluster at z = 0.288 Caught in the Process of Formation: The Case of Abell 959
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• ViCTORIA project: The LOFAR HBA Virgo Cluster Survey
• Discovery of a double radio relic in ZwCl1447.2+2619: A rare testbed for shock acceleration models with a peculiar surface brightness ratio
• Abell 1430: A merging cluster with exceptional diffuse radio emission
• Contribution of Radio Halos to the Foreground for SKA EoR Experiments
• MeerKAT's discovery of a radio relic in the bimodal merging cluster A2384
• ClG 0217+70: A massive merging galaxy cluster with a large radio halo and relics
• Imaging results from the legacy GMRT Galaxy Cluster Key Project
• Radio halos in a mass-selected sample of 75 galaxy clusters. I. Sample selection and data analysis
• Increase in the Brightness of the Cosmic Radio Background toward Galaxy Clusters
• Revealing the intricacies of radio galaxies and filaments in the merging galaxy cluster Abell 2255. II. Properties of filaments using multi-frequency radio data
• RXTE Observation of the Non-thermal Emission from the Early Stage Merger in Abell 1750