Evidence for particle re-acceleration in the radio relic in the galaxy cluster PLCKG287.0 +32.9

Abstract

Radio relics are diffuse radio sources observed in galaxy clusters, probably produced by shock acceleration during cluster-cluster mergers. Their large size, of the order of 1 Mpc, indicates that the emitting electrons need to be (re)accelerated locally. The usually invoked Diffusive Shock Acceleration models have been challenged by recent observations and theory. We report the discovery of complex radio emission in the Galaxy cluster PLCKG287.0 +32.9, which hosts two relics, a radio halo, and several radio filamentary emission. Optical observations suggest that the cluster is elongated, likely along an intergalactic filament, and displays a significant amount of substructure. The peculiar features of this radio relic are that (i) it appears to be connected to the lobes of a radio galaxy and (ii) the radio spectrum steepens on either side of the radio relic. We discuss the origins of these features in the context of particle re-acceleration.

23 pages, 12 Figures, ApJ accepted

References in corpus (12)

• Particle Acceleration on Megaparsec Scales in a Merging Galaxy Cluster
• On the connection between giant radio halos and cluster mergers
• Compressed sensing imaging techniques for radio interferometry
• GMRT Radio Halo Survey in galaxy clusters at z = 0.2 -- 0.4 I.The REFLEX sub--sample
• Giant Ringlike Radio Structures Around Galaxy Cluster Abell 3376
• Shock Waves in Eulerian Cosmological Simulations: Main Properties and Acceleration of Cosmic Rays
• Deep U band and R imaging of GOODS-South: Observations,data reduction and first results
• Cosmological Shocks in Adaptive Mesh Refinement Simulations and the Acceleration of Cosmic Rays
• Double relics in Abell 2345 and Abell 1240: spectral index and polarization analysis
• Baryons in the relativistic jets of the stellar-mass black hole candidate 4U 1630-47
• Low-Frequency study of two clusters of galaxies: A2744 and A2219
• Magnetic field amplification by shocks in galaxy clusters: application to radio relics

Cited by in corpus (100)

• Diffuse Radio Emission from Galaxy Clusters
• Radio galaxies and feedback from AGN jets
• Chemical abundances in high-redshift galaxies: A powerful new emission line diagnostic
• The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
• LOFAR, VLA, and Chandra observations of the Toothbrush galaxy cluster
• A radio ridge connecting two galaxy clusters in a filament of the cosmic web
• LOFAR observations of galaxy clusters in HETDEX
• Shock acceleration efficiency in radio relics
• Another shock for the Bullet cluster, and the source of seed electrons for radio relics
• A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass-luminosity relation
• Gentle re-energisation of electrons in merging galaxy clusters
• Properties of Merger Shocks in Merging Galaxy Clusters
• Measuring the dynamical state of Planck SZ-selected clusters: X-ray peak - BCG offset
• Deep Very Large Array observations of the merging cluster CIZA J2242.8+5301: continuum and spectral imaging
• Deep LOFAR observations of the merging galaxy cluster CIZA J2242.8+5301
• LOFAR discovery of a double radio halo system in Abell 1758 and radio/X-ray study of the cluster pair
• X-ray emission from interacting massive binaries: a review of 15 years of progress
• A shock front at the radio relic of Abell 2744
• The environments of radio-loud AGN from the LOFAR Two-Metre Sky Survey (LoTSS)
• VLA Radio Observations of the HST Frontier Fields Cluster Abell 2744: The Discovery of New Radio Relics
• Dissecting nonthermal emission in the complex multiple-merger galaxy cluster Abell 2744: Radio and X-ray analysis
• Chandra and JVLA observations of HST Frontier Fields cluster MACS J0717.5+3745
• Relics in galaxy clusters at high radio frequencies
• A plethora of diffuse steep spectrum radio sources in Abell 2034 revealed by LOFAR
• On the absence of radio halos in clusters with double relics
• Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
• Radio observations of the merging galaxy cluster Abell 520
• A powerful double radio relic system discovered in PSZ1 G108.18-11.53: evidence for a shock with non-uniform Mach number?
• Alfvenic Turbulence Beyond the Ambipolar Diffusion Scale
• Simulating the transport of relativistic electrons and magnetic fields injected by radio galaxies in the intracluster medium
• The first Murchison Widefield Array low frequency radio observations of cluster scale non-thermal emission: the case of Abell 3667
• New giant radio sources and underluminous radio halos in two galaxy clusters
• X-ray study of the double radio relic Abell 3376 with Suzaku
• Deep low-frequency radio observations of Abell 2256 I: The filamentary radio relic
• MC${}^2$: Subaru and Hubble Space Telescope Weak-Lensing Analysis of the Double Radio Relic Galaxy Cluster PLCK G287.0+32.9
• The LOFAR and JVLA view of the distant steep spectrum radio halo in MACS J1149.5+2223
• Interactions Between Radio Galaxies and Cluster Shocks - 1: Jet Axes Aligned with Shock Normals
• Discovering the most elusive radio relic in the sky: Diffuse Shock Acceleration caught in the act?
• The scaling relations and the fundamental plane for radio halos and relics of galaxy clusters
• Understanding the radio relic emission in the galaxy cluster MACS J0717.5+3745: spectral analysis
• The Planck clusters in the LOFAR sky VI. LoTSS-DR2: Properties of radio relics
• Using Collisions of AGN Outflows with ICM Shocks as Dynamical Probes
• A perfect power-law spectrum even at highest frequencies: The Toothbrush relic
• Observations of the galaxy cluster CIZA J2242.8+5301 with the Sardinia Radio Telescope
• Exemplary Merging Clusters: Weak-lensing and X-ray Analysis of the Double Radio Relic Merging Galaxy Clusters MACS 1752.0+4440 and ZWCL 1856.8+6616
• Mystery solved: discovery of extended radio emission in the merging galaxy cluster Abell 2146
• Constraining the dark matter contribution of $\gamma$ rays in Cluster of galaxies using Fermi-LAT data
• Ultra-steep spectrum emission in the merging galaxy cluster Abell 1914
• A Very Large (${\theta }_E\gtrsim 40$") Strong Gravitational Lens Selected with the Sunyaev-Zel'dovich Effect: PLCK G287.0+32.9 ($z$ = 0.38)
• A three-component giant radio halo: the puzzling case of the galaxy cluster Abell 2142
• Evidence for a merger induced shock wave in ZwCl\,0008.8+5215 with {\it Chandra} and {\it Suzaku}
• Turbulent magnetic fields in the merging galaxy cluster MACS J0717.5+3745: polarization analysis
• Radio relics radio emission from multi-shock scenario
• A Fresh Look at Narrow-Angle Tail Radio Galaxy Dynamics, Evolution and Emissions
• Reconstruction of Radio Relics and X-ray Tails in an Off-axis Cluster Merger: Hydrodynamical Simulations of A115
• Spectro-polarimetric observations of the CIZA J2242.8+5301 northern radio relic: no evidence of high-frequency steepening
• Radio relics in PSZ2 G096.88+24.18: A connection with pre-existing plasma
• Multi-wavelength Analysis of the Merging Galaxy Cluster A115
• A Massive Cluster at z = 0.288 Caught in the Process of Formation: The Case of Abell 959
• Imprints of gravitational lensing in the Planck CMB data at the location of WISExSCOS galaxies
• MeerKAT's View of the Bullet Cluster 1E 0657-55.8
• Using the polarization properties of double radio relics to probe the turbulent compression scenario
• The merging galaxy cluster Abell 3266 at low radio frequencies
• SPT-CL J2032-5627: a new Southern double relic cluster observed with ASKAP
• The prototypical major cluster merger Abell 754. I. Calibration of MeerKAT data and radio/X-ray spectral mapping of the cluster
• A Newly-Discovered Radio Halo in Merging Cluster MACS J2243.3-0935
• Sulfur-bearing species in molecular clouds
• Simulated Interactions Between Radio Galaxies and Cluster Shocks -- 2: Jet Axes Orthogonal to Shock Normals
• The correlation between radio power and Mach number for radio relics in galaxy clusters
• A giant radio halo in a low-mass SZ-selected galaxy cluster: ACT-CL J0256.5+0006
• Discovery of a double radio relic in ZwCl1447.2+2619: A rare testbed for shock acceleration models with a peculiar surface brightness ratio
• Shocked Narrow-Angle Tail Radio Galaxies: Simulations and Emissions
• The spectacular cluster chain Abell 781 as observed with LOFAR, GMRT, and XMM-Newton
• Search for low-frequency diffuse radio emission around a shock in the massive galaxy cluster MACS J0744.9+3927
• Discovery of large-scale diffuse radio emission in low-mass galaxy cluster Abell 1931
• On the Challenges of Cosmic-Ray Proton Shock Acceleration in the Intracluster Medium
• Contribution of Radio Halos to the Foreground for SKA EoR Experiments
• Tracing low-mass galaxy clusters with radio relics: the discovery of Abell 3527-bis
• A multishock scenario for the formation of radio relics
• 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
• A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT
• Flash ionisation signature in coherent cyclotron emission from Brown Dwarfs
• The MeerKAT Massive Distant Clusters Survey: A Radio Halo in a Massive Galaxy Cluster at z = 1.23
• The powerful lens galaxy cluster PLCK G287.0+32.9 (${\theta }_E\sim 43^{\prime \prime }$)
• A Semi-Analytical Model for the Formation and Evolution of Radio Relics in Galaxy Clusters
• A 600 kpc complex radio source at the center of Abell 3718 discovered by the EMU and POSSUM surveys
• Radio multifrequency observations of galaxy clusters. The Abell 399$-$401 pair
• CHEX-MATE: New detections and properties of the radio diffuse emission in massive clusters with MeerKAT
• The strongest cool core in REXCESS: Missing X-ray cavities in RXC J2014.8-2430
• Gamma-ray detection toward the Coma cluster with Fermi-LAT: Implications for the cosmic ray content in the hadronic scenario
• Deep Chandra observations of PLCKG287.0+32.9: a clear detection of a shock front in a heated former cool core
• The application of the adiabatic compression scenario to the radio relic in the galaxy cluster Abell 3411-3412
• The LOFAR sub-arcsecond view of the high-redshift radio relic in PSZ2G091.83+26.11
• Shocking Signals of Dark Matter Annihilation
• Is there a tilt in the fundamental (hyper)plane?
• Low-frequency integrated radio spectra of diffuse, steep-spectrum sources in galaxy clusters: palaeontology with the MWA and ASKAP
• A LOFAR-uGMRT spectral index study of distant radio halos
• The MeerKAT Massive Distant Clusters Survey: a search for diffuse radio emission in 30 massive SZ-selected clusters at $z>1$
• A high-resolution study of the double radio relic system in MACS J1752.0+4440