The peculiar radio galaxy 4C 35.06: a case for recurrent AGN activity?

Abstract

Using observations obtained with the LOw Fequency ARray (LOFAR), the Westerbork Synthesis Radio Telescope (WSRT) and archival Very Large Array (VLA) data, we have traced the radio emission to large scales in the complex source 4C 35.06 located in the core of the galaxy cluster Abell 407. At higher spatial resolution (~4"), the source was known to have two inner radio lobes spanning 31 kpc and a diffuse, low-brightness extension running parallel to them, offset by about 11 kpc (in projection). At 62 MHz, we detect the radio emission of this structure extending out to 210 kpc. At 1.4 GHz and intermediate spatial resolution (~30"), the structure appears to have a helical morphology. We have derived the characteristics of the radio spectral index across the source. We show that the source morphology is most likely the result of at least two episodes of AGN activity separated by a dormant period of around 35 Myr. The AGN is hosted by one of the galaxies located in the cluster core of Abell 407. We propose that it is intermittently active as it moves in the dense environment in the cluster core. Using LOFAR, we can trace the relic plasma from that episode of activity out to greater distances from the core than ever before. Using the the WSRT, we detect HI in absorption against the center of the radio source. The absorption profile is relatively broad (FWHM of 288 km/s), similar to what is found in other clusters. Understanding the duty cycle of the radio emission as well as the triggering mechanism for starting (or restarting) the radio-loud activity can provide important constraints to quantify the impact of AGN feedback on galaxy evolution. The study of these mechanisms at low frequencies using morphological and spectral information promises to bring new important insights in this field.

arXiv comment10 pages, 6 figures. Accepted to A&A

References in corpus (33)

• The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colours of galaxies
• LOFAR: The LOw-Frequency ARray
• The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III
• A Cosmology Calculator for the World Wide Web
• On the fundamental dichotomy in the local radio-AGN population: accretion, evolution, and host galaxy properties
• Chandra X-ray Observations of the Hydra A Cluster: An Interaction Between the Radio Source and the X-Ray-Emitting Gas
• The relation between accretion rate and jet power in X-ray luminous elliptical galaxies
• The VLA Low-frequency Sky Survey
• Chaotic cold accretion onto black holes
• The ROSAT Brightest Cluster Sample (BCS): -- III. Optical spectra of the central cluster galaxies
• Hot and cold gas accretion and feedback in radio-loud active galaxies
• A morphological algorithm for improving radio-frequency interference detection
• Radio galaxies with a `double-double' morphology: I - Analysis of the radio properties and evidence for interrupted activity in active galactic nuclei
• A Ten Billion Solar Mass Outflow of Molecular Gas Launched by Radio Bubbles in the Abell 1835 Brightest Cluster Galaxy
• The accretion mechanism in low-power radio galaxies
• In search of dying radio sources in the local universe
• M87 at metre wavelengths: the LOFAR picture
• The location of the broad HI absorption in 3C305: clear evidence for a jet-accelerated neutral outflow
• First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256
• A search for steep spectrum radio relics and halos with the GMRT
• HI Absorption Toward the Nucleus of the Radio Galaxy PKS 2322-123 in A 2597
• HI absorption towards nearby compact radio sources
• Episodic radio galaxies J0116$-$4722 and J1158+2621: can we constrain the quiescent phase of nuclear activity?
• Radio morphology and spectral analysis of cD galaxies in rich and poor galaxy clusters
• Probing the gas content of radio galaxies through HI absorption stacking
• An HI absorbing circumnuclear disk in Cygnus A
• Origin of the complex radio structure in BAL QSO 1045+352
• HI gas in rejuvenated radio galaxies: GMRT observations of the DDRG J1247+6723
• Radio Frequency Spectra of 388 Bright 74 MHz Sources
• Parsec-scale Properties of Brightest Cluster Galaxies
• HI gas in the rejuvenated radio galaxy 4C29.30
• A relation between circumnuclear HI, dust, and optical cores in low-power radio galaxies
• GMRT observations of the radio source 4C 35.06: precessing jets from a cD galaxy under assembly?

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• Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy
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• The best of both worlds: Combining LOFAR and Apertif to derive resolved radio spectral index images
• Radio Galaxy Zoo: discovery of a poor cluster through a giant wide-angle tail radio galaxy
• The Dynamics and Energetics of Remnant and Restarting RLAGN
• Studying the late evolution of a radio-loud AGN in a galaxy group with LOFAR
• Effect of richness on AGN and star formation activities in SDSS galaxy groups
• Accretion in active galactic nuclei and disk-jet coupling
• Cosmic dance in the Shapley Concentration Core - I. A study of the radio emission of the BCGs and tailed radio galaxies
• Unveiling the AGN in IC 883: discovery of a parsec-scale radio jet
• Dichotomy in the population of young AGN: optical, radio and X-ray properties
• `Zwicky's Nonet': a compact merging ensemble of nine galaxies and 4C 35.06, a peculiar radio galaxy with dancing radio jets
• The peculiar WAT NGC 2329 with Seyfert/FR I-like radio lobes
• Chandra view of Abell 407: the central compact group of galaxies and the interaction between the radio AGN and the ICM
• HI absorption associated with Norma's brightest cluster galaxy
• The radio source in Abell 980: A Detached-Double-Double Radio Galaxy?
• A Morphological Identification and Study of Radio Galaxies from LoTSS DR2. I. The "Winged'' Radio Galaxies