Complex diffuse emission in the $z=0.52$ cluster PLCK~G004.5-19.5

Abstract

We present radio observations of the galaxy cluster PLCK G004.5-19.5 ($z=0.52$) using the Giant Metrewave Radio Telescope at 150~MHz, 325~MHz, and 610~MHz. We find an unusual arrangement of diffuse radio emission in the center and periphery of the cluster, as well as several radio galaxies with head-tail emission. A patch of peripheral emission resembles a radio relic, and central emission resembles a radio halo. Reanalysis of archival XMM-Newton X-ray data shows that PLCK G004.5-19.5 is disturbed, which has a known correlation with the existence of radio relics and halos. Given that the number of known radio halos and radio relics at $z>0.5$ is very limited, PLCK G004.5-19.5 is an important addition to understanding merger-related particle acceleration at higher redshifts.

arXiv comment7 pages, 7 figures, accepted at A&A with reference AA/2017/30496

References in corpus (35)

• LOFAR: The LOw-Frequency ARray
• The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• Automated data reduction workflows for astronomy
• Cosmic rays in galaxy clusters and their non-thermal emission
• Planck 2013 results. XXIX. Planck catalogue of Sunyaev-Zeldovich sources
• RVSAO 2.0: Digital Redshifts and Radial Velocities
• CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources
• The 2-8 keV cosmic X-ray background spectrum as observed with XMM-Newton
• Ionospheric Calibration of Low Frequency Radio Interferometric Observations using the Peeling Scheme: I. Method Description and First Results
• On the connection between giant radio halos and cluster mergers
• The non-coplanar baselines effect in radio interferometry: The W-Projection algorithm
• The impact of mergers on relaxed X-ray clusters - I. Dynamical evolution and emergent transient structures
• Images, structural properties and metal abundances of galaxy clusters observed with Chandra ACIS-I at 0.1<z<1.3
• Reviving Fossil Radio Plasma in Clusters of Galaxies by Adiabatic Compression in Environmental Shock Waves
• A low-frequency radio halo associated with a cluster of galaxies
• Searching for Cool Core Clusters at High redshift
• Statistics of Giant Radio Halos from Electron Reacceleration Models
• Planck early results. IX. XMM-Newton follow-up for validation of Planck cluster candidates
• Magnetic Field Evolution in Merging Clusters of Galaxies
• Discovery of radio halos and double-relics in distant MACS galaxy clusters: clues to the efficiency of particle acceleration
• A2255: the First Detection of Filamentary Polarized Emission in a Radio Halo
• Rise and Fall of Radio Halos in Simulated Merging Galaxy Clusters
• Revealing the magnetic field in a distant galaxy cluster: discovery of the complex radio emission from MACS J0717.5 +3745
• Unveiling radio halos in galaxy clusters in the LOFAR era
• The Radio Relics and Halo of El Gordo, a Massive $z=0.870$ Cluster Merger
• Diffusive Shock Acceleration at Cosmological Shock Waves
• A $\mathcal{M}\gtrsim 3$ shock in `El Gordo' cluster and the origin of the radio relic
• How many radio relics await discovery?
• Diffuse radio emission in the merging cluster MACS J0717.5+3745: the discovery of the most powerful radio halo
• Modelling injection and feedback of Cosmic Rays in grid-based cosmological simulations: effects on cluster outskirts
• Abundance and temperature distributions in the hot intra-cluster gas of Abell 4059
• Diffuse steep-spectrum sources from the 74 MHz VLSS survey
• Diffuse radio emission in MACS J0025.4$-$1222: the effect of a major merger on bulk separation of ICM components
• Strong Lensing Analysis of PLCK G004.5$-$19.5, a Planck-Discovered Cluster Hosting a Radio Relic at $z=0.52$

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• Diffuse Radio Emission from Galaxy Clusters
• RELICS: Reionization Lensing Cluster Survey
• The Strongest Cluster Lenses: An Analysis of the Relation Between Strong Gravitational Lensing Strength and the Physical Properties of Galaxy Clusters
• A Massive Cluster at z = 0.288 Caught in the Process of Formation: The Case of Abell 959
• A LOFAR-uGMRT spectral index study of distant radio halos