Constraining the AGN duty cycle in the cool-core cluster MS 0735.6+7421 with LOFAR data

Abstract

MS 0735.6+7421 is a galaxy cluster which hosts a central radio galaxy with a very steep spectrum, produced by one of the most powerful known jetted active galactic nuclei (AGN). The radio plasma, ejected at nearly light speed from the central AGN, have displaced the intra-cluster medium, leaving two pairs of cavities observable in the X-ray, associated to two different outbursts, and have distributed energy to the surrounding medium. In this work we have performed for the first time a detailed, high-resolution spectral study of the source at radio frequencies and investigated its duty cycle to be compared with previous X-ray estimates. We have used new observations at 144 MHz produced with the LOw Frequency ARray (LOFAR) together with archival data at higher frequencies. At LOFAR frequency, the source presents two large outer radio lobes, wider than at higher frequencies, and a smaller Intermediate lobe located south-west of the core. A new inspection of X-ray data, allowed us to identify an intermediate cavity, associated with that lobe, indicating the presence of a further phase of jet activity. The radio lobes have a steep spectrum even at LOFAR frequencies, reaching ${\alpha }_{144}^{610}=2.9$ in the outer lobes and ${\alpha }_{144}^{610}=2.1$ in the Intermediate lobe. Fitting the lobe spectra using a single injection model of particle ageing, we derived a total age of the source between 170 and 106 Myr, in agreement with the buoyancy and sound crossing time-scales derived from X-ray data. We then reconstructed the duty cycle of the source. There were three phases of jet activity, with the AGN being active for most of the time with only brief quiescent phases, ensuring the repeated heating of the central gas. Finally, energetic estimates revealed that a source of additional pressure support must be present to sustain the bubbles against the pressure of the external medium.

arXiv comment18 pages, 12 figures; accepted for publication in A&A

References in corpus (70)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• LOFAR: The LOw-Frequency ARray
• Heating Hot Atmospheres with Active Galactic Nuclei
• WSClean: an implementation of a fast, generic wide-field imager for radio astronomy
• A Systematic Study of Radio-Induced X-ray Cavities in Clusters, Groups, and Galaxies
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• Mechanical Feedback from Active Galactic Nuclei in Galaxies, Groups, and Clusters
• The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
• Chandra X-ray Observations of the Hydra A Cluster: An Interaction Between the Radio Source and the X-Ray-Emitting Gas
• Chandra imaging of the complex X-ray core of the Perseus cluster
• The LOFAR Two-metre Sky Survey - II. First data release
• High Resolution X-ray Spectroscopic Constraints on Cooling-Flow Models for Clusters of Galaxies
• X-ray Spectroscopy of Cooling Clusters
• Diffuse Radio Emission from Galaxy Clusters
• An Accurate Flux Density Scale from 1 to 50 GHz
• Radiative Efficiency and Content of Extragalactic Radio Sources: Toward a Universal Scaling Relation Between Jet Power and Radio Power
• An X-ray study of magnetic field strengths and particle content in FRII radio sources
• A broadband flux scale for low frequency radio telescopes
• Radio galaxies and feedback from AGN jets
• The matter content of the jet in M87: evidence for an electron-positron jet
• Faceting for direction-dependent spectral deconvolution
• The cluster-scale AGN outburst in Hydra A
• X-ray Emission Properties of Large Scale Jets, Hotspots and Lobes in Active Galactic Nuclei
• Radio interferometric gain calibration as a complex optimization problem
• X-ray Supercavities in the Hydra A Cluster and the Outburst History of the Central Galaxy's Active Nucleus
• Shocks and Cavities from Multiple Outbursts in the Galaxy Group NGC 5813: A Window to AGN Feedback
• Magnetic field strengths in the hotspots and lobes of three powerful FRII radio sources
• Radio AGN in the local universe: unification, triggering and evolution
• FR II radio galaxies with z<0.3 -- I. Properties of jets, cores and hot spots
• Spectral ageing in the lobes of FR-II radio galaxies: New methods of analysis for broadband radio data
• Luminosity function, sizes and FR dichotomy of radio-loud AGN
• A Very Deep Chandra Observation of the Galaxy Group NGC 5813: AGN Shocks, Feedback, and Outburst History
• Particle content, radio-galaxy morphology and jet power: all radio-loud AGN are not equal
• Non-linear Kalman filters for calibration in radio interferometry
• The late time radio emission from SN 1993J at meter wavelengths
• The Energetics and Lifetimes of Local Radio Active Galactic Nuclei
• The LOFAR Multifrequency Snapshot Sky Survey (MSSS) I. Survey description and first results
• The Onset of Thermally Unstable Cooling from the Hot Atmospheres of Giant Galaxies in Clusters - Constraints on Feedback Models
• An Energetic AGN Outburst Powered by a Rapidly Spinning Supermassive Black Hole or an Accreting Ultramassive Black Hole
• A Comprehensive Study of the Radio Properties of Brightest Cluster Galaxies
• X-ray emission from the nuclei, lobes and hot-gas environments of two FR-II radio galaxies
• Spectral ageing in the lobes of cluster-centre FR-II radio galaxies
• Cycling of the powerful AGN in MS 0735.6+7421 and the duty cycle of radio AGN in Clusters
• Cavities and shocks in the galaxy group HCG 62 as revealed by Chandra, XMM and GMRT data
• RAiSE III: 3C radio AGN energetics and composition
• The particle content of low-power radio galaxies in groups and clusters
• Cosmological Effects of Powerful AGN Outbursts in Galaxy Clusters: Insights from an XMM-Newton Observation of MS0735+7421
• Synchrotron and inverse-Compton emission from radio galaxies with non-uniform magnetic field and electron distributions
• Episodic radio galaxies J0116$-$4722 and J1158+2621: can we constrain the quiescent phase of nuclear activity?
• Multifrequency VLA radio observations of the X-ray cavity cluster of galaxies RBS797: evidence of differently oriented jets
• A Chandra study of the large-scale shock and cool filaments in Hydra A: Evidence for substantial gas dredge-up by the central outburst
• Radio Galaxy Zoo: A Search for Hybrid Morphology Radio Galaxies
• FR-II radio galaxies at low frequencies II: spectral ageing and source dynamics
• Duty cycle of the radio galaxy B2 0258+35
• Radiative age mapping of the remnant radio galaxy B2 0924+30: the LOFAR perspective
• A Chandra - VLA Investigation of the X-ray Cavity System and Radio Mini-Halo in the Galaxy Cluster RBS 797
• Discovery of a giant radio fossil in the Ophiuchus galaxy cluster
• The flickering nuclear activity of Fornax A
• Radio spectral properties and jet duty cycle in the restarted radio galaxy 3C388
• The contribution of discrete sources to the sky temperature at 144 MHz
• Using Radio Bubbles to Constrain the Matter Content of AGN Jets
• Radio Lobes of Pictor A: an X-ray spatially resolved Study
• Wide-field LOFAR imaging of the field around the double-double radio galaxy B1834+620: A fresh view on a restarted AGN and doubeltjes
• Spectral ageing in the era of big data: integrated vs resolved models
• Evidence of AGN feedback and sloshing in the X-ray luminous NGC 1550 galaxy group
• LOFAR MSSS: The Scaling Relation between AGN Cavity Power and Radio Luminosity at Low Radio Frequencies
• Resolving the Steep Spectrum Emission in the Central Radio Source in ZwCl 0735.7+7421
• The Entrainment-Limited Evolution of FR II Sources: Maximum Sizes and A Possible Connection to FR Is

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