Hard X-ray selected giant radio galaxies -- III. The LOFAR view

Abstract

Giant radio galaxies (GRGs), with extended structures reaching hundreds of kpc, are among the most spectacular examples of ejection of relativistic plasma from super-massive black holes. In this work, third of a series, we present LOw Frequency ARray (LOFAR) images at 144 MHz, collected in the framework of the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS DR2), for nine sources extracted from our sample of hard X-ray selected GRGs (HXGRG, i.e. from INTEGRAL/IBIS and Swift/BAT catalogues at >20 keV). Thanks to the resolution and sensitivity of LoTSS, we could probe the complex morphology of these GRGs, unveiling cases with diffuse (Mpc-scale) remnant emission, presence of faint off-axis wings, or a misaligned inner jet. In particular, for one source (B21144+35B), we could clearly detect a $\sim$300 kpc wide off-axis emission, in addition to an inner jet which orientation is not aligned with the lobes axis. For another source (J1153.9+5848) a structure consistent with jet precession was revealed, appearing as an X-shaped morphology with relic lobes having an extension larger than the present ones, and with a different axis orientation. From an environment analysis, we found 2 sources showing an overdensity of cosmological neighbours, and a correspondent association with a galaxy cluster from catalogues. Finally, a comparison with radio-selected GRGs from LoTSS DR1 suggested that, on average, HXGRG can grow to larger extents. These results highlight the importance of deep low-frequency observations to probe the evolution of radio galaxies, and ultimately estimate the duty cycle of their jets.

Accepted for publication in MNRAS

References in corpus (30)

• The Revised TESS Input Catalog and Candidate Target List
• WSClean: an implementation of a fast, generic wide-field imager for radio astronomy
• The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
• The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging
• An optimized algorithm for multi-scale wideband deconvolution of radio astronomical images
• A GMBCG Galaxy Cluster Catalog of 55,424 Rich Clusters from SDSS DR7
• FIRST `Winged' and `X'-shaped Radio Source Candidates
• Giant radio galaxies in the LOFAR Two-metre Sky Survey-I
• A candidate sub-parsec binary black hole in the Seyfert galaxy NGC 7674
• Search and analysis of giant radio galaxies with associated nuclei (SAGAN) -- I : New sample and multi-wavelength studies
• Hydrodynamical Backflow in X-shaped Radio Galaxy PKS 2014-55
• A multifrequency study of giant radio sources-II. Spectral ageing analysis of the lobes of selected sources
• The Chandra Survey of Extragalactic Sources in the 3CR Catalog: X-ray Emission from Nuclei, Jets, and Hotspots in the Chandra Archival Observations
• MIGHTEE: Are giant radio galaxies more common than we thought?
• OCCAM: a flexible, multi-purpose and extendable HPC cluster
• Serendipitous discovery of a dying Giant Radio Galaxy associated with NGC 1534, using the Murchison Widefield Array
• 3D Hydrodynamic Simulations of Large-Scale Precessing Jets: Radio Morphology
• The LOFAR view of intergalactic magnetic fields with giant radio galaxies
• Three-Dimensional Simulations of Inflows Irradiated by a Precessing Accretion Disk in Active Galactic Nuclei: Formation of Outflows
• Hard X-ray selected giant radio galaxies -- II. Morphological evidence of restarted radio activity
• A discovery of young radio sources in the cores of giant radio galaxies selected at hard X-rays
• What Are "X-Shaped" Radio Sources Telling Us? II. Properties of a Sample of 87
• INTEGRAL view of AGN
• Deciphering the Large-Scale Environment of Radio Galaxies in the Local Universe II. A Statistical Analysis of Environmental Properties
• LOFAR first look at the giant radio galaxy 3C 236
• The $\text{Chandra}$ 3CR extragalactic survey at high redshift
• Low-frequency observations of the Giant Radio Galaxy NGC 6251
• Soft gamma-ray selected giant radio galaxies: an update
• A young and obscured AGN embedded in the giant radio galaxy Mrk 1498
• The radio-loud AGN population at z>~1 in the COSMOS field. I. Selection and Spectral Energy Distributions

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• From 100 MHz to 10 GHz: Unveiling the spectral evolution of the X-shaped radio galaxy in Abell 3670