Chandra View of the LINER-type Nucleus in the Radio-Loud Galaxy CGCG 292-057: Ionized Iron Line and Jet-ISM Interactions

Abstract

We present an analysis of the new, deep (94\,ksec) {\it Chandra} ACIS-S observation of radio-loud active galaxy CGCG\,292$-$057, characterized by a LINER-type nucleus and a complex radio structure that indicates intermittent jet activity. On the scale of the host galaxy bulge, we detected excess X-ray emission with a spectrum best fit by a thermal plasma model with a temperature of $\sim 0.8$\,keV. We argue that this excess emission results from compression and heating of the hot diffuse fraction of the interstellar medium displaced by the expanding inner, $\sim 20$\, kpc-scale lobes observed in this restarted radio galaxy. The nuclear X-ray spectrum of the target clearly displays an ionized iron line at $\sim 6.7$\,keV, and is best fitted with a phenomenological model consisting of a power-law (photon index $\simeq 1.8$) continuum absorbed by a relatively large amount of cold matter (hydrogen column density $\simeq 0.7\times 10^{23}$\,cm${}^{-2}$), and partly scattered (fraction $\sim 3\%$) by ionized gas, giving rise to a soft excess component and K$\alpha$ line from iron ions. We demonstrate that the observed X-ray spectrum, particularly the equivalent width of Fe\,\texttt{XXV} K$\alpha$ (of order $0.3$\,keV) can in principle, be explained in a scenario involving a Compton-thin gas located at the scale of the broad-lined region in this source and photoionized by nuclear illumination. We compare the general spectral properties of the CGCG\,292$-$057 nucleus, with those of other nearby LINERs studied in X-rays.

arXiv commentrevised version, accepted for publication in the Astrophysical Journal

References in corpus (51)

• Star Formation in Galaxies Along the Hubble Sequence
• The slope of the black-hole mass versus velocity dispersion correlation
• Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
• A Unified, Merger-Driven Model for the Origin of Starbursts, Quasars, the Cosmic X-Ray Background, Supermassive Black Holes and Galaxy Spheroids
• Color Separation of Galaxy Types in the Sloan Digital Sky Survey Imaging Data
• Revisiting the Scaling Relations of Black Hole Masses and Host Galaxy Properties
• Nuclear Activity in Nearby Galaxies
• The Tenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Apache Point Observatory Galactic Evolution Experiment
• The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• The emission line - radio correlation for radio sources using the 7C Redshift Survey
• Sherpa: a Mission-Independent Data Analysis Application
• Chandra Snapshot Observations of Low-Luminosity AGNs with a Compact Radio Source
• Statistical Properties of Bright Galaxies in the SDSS Photometric System
• Radiatively Inefficient Accretion in Nearby Galaxies
• Updating quasar bolometric luminosity corrections
• Accretion and star formation rates in low redshift type-II active galactic nuclei
• Electron Heating in Hot Accretion Flows
• An X-ray view of 82 LINERs with Chandra and XMM-Newton data
• Bolometric correction factors for Active Galactic Nuclei
• Accretion Disk Model of Short-Timescale Intermittent Activity in Young Radio Sources
• Intermittent radio galaxies and source statistics
• The Black Hole Mass-Bulge Luminosity Relationship for Active Galactic Nuclei from Reverberation Mapping and Hubble Space Telescope Imaging
• Shocks and sonic booms in the intracluster medium: X-ray shells and radio galaxy activity
• On the Evolution of and High-Energy Emission from GHz-Peaked-Spectrum Sources
• A Suzaku survey of Fe K lines in Seyfert 1 AGN
• FIRST `Winged' and `X'-shaped Radio Source Candidates
• X-ray nature of the LINER nuclear sources
• On the Origin of the Iron K Line in the Spectrum of the Galactic X-ray Background
• Study of LINER sources with broad H(alpha) emission. X-ray properties and comparision to luminous AGN and X-ray binaries
• Spectral Energy Distributions of Weak Active Galactic Nuclei Associated With Low-Ionization Nuclear Emission Regions
• The structure and radiation spectra of illuminated accretion discs in AGN. I. Moderate illumination
• LoTSS DR1: Double-double radio galaxies in the HETDEX field
• Fitting LINER nuclei within the AGN family: A matter of obscuration?
• Ionized iron Kαlines in AGN X-ray spectra
• Study of LINER sources with broad H(alpha) emission. Spectral energy distribution and multiwavelength correlations
• Discovery of rare double-lobe radio galaxies hosted in spiral galaxies
• X-ray properties of the Youngest Radio Sources and their Environments
• Variable iron-line emission near the black hole of Markarian 766
• The Fate of Young Radio Galaxies: Decelerations Inside Host Galaxies?
• Flat-spectrum symmetric objects with ~1 kpc sizes I. The candidates
• FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts
• Detection of an iron K Emission Line from the LINER NGC 4579
• Dynamical analysis of the complex radio structure in 3C 293: Clues on a rapid jet realignment in X-shaped radio galaxies
• On the efficiency of jet production in FR II radio galaxies and quasars
• Iron K line Variability in the Low-Luminosity AGN NGC 4579
• Suzaku observation of the LINER NGC 4102
• A redshifted Fe K$\alpha$ line from the unusual gamma-ray source PMN J1603-4904
• CGCG 292-057 - a radio galaxy with merger-modulated radio activity
• Extended X-ray emission in PKS 1718$-$649
• Optical-NIR spectroscopy of the puzzling gamma-ray source 3FGL 1603.9-4903/PMN J1603-4904 with X-shooter

Cited by in corpus (2)

• X-ray Emission of the $\gamma$-ray Loud Young Radio Galaxy NGC 3894
• Multifrequency analysis of the radio emission from a post-merger galaxy CGCG 292-057