Fe XXV and Fe XXVI lines from low velocity, photoionised gas in the X-ray spectra of AGN

Abstract

We have calculated the equivalent widths of the absorption lines produced by Fe XXV and Fe XXVI in a Compton-thin, low-velocity photoionised material illuminated by the nuclear continuum in AGN. The results, plotted against the ionisation parameter and the column density of the gas, are a complement to those presented by Bianchi & Matt 2002 for the emission lines from the same ionic species. As an extension to the work by Bianchi & Matt 2002, we also present a qualitative discussion on the different contributions to the He-like iron emission line complex in the regimes where recombination or resonant scattering dominates, providing a useful diagnostic tool to measure the column density of the gas. Future high resolution missions (e.g., Astro-E2) will allow us to fully take advantage of these plasma diagnostics. In the meantime, we compare our results with an up-to-date list of Compton-thick and unobscured (at least at the iron line energy) Seyfert galaxies with emission and/or absorption lines from H- and He-like iron observed with Chandra and XMM-Newton.

arXiv comment9 pages, 7 figures, accepted for publication in MNRAS

References in corpus (35)

• X-ray photoionized plasma diagnostics with Helium-like ions. Application to Warm Absorber-Emitter in Active Galactic Nuclei
• XMM-Newton Reflection Grating Spectrometer Observations of Discrete Soft-X-ray Emission Features from NGC 1068
• The Ionized Gas and Nuclear Environment in NGC 3783. I. Time-Averaged 900 ks Chandra Grating Spectroscopy
• Atomic Data for Permitted Resonance Lines of Atoms and Ions from H to Si, and S, Ar, Ca and Fe
• A Massive X-Ray Outflow from the Quasar PDS 456
• The Ionized Gas and Nuclear Environment in NGC 3783. IV. Variability and Modeling of the 900 ks CHANDRA Spectrum
• The X-ray spectra of Compton-thick Seyfert 2 galaxies as seen by BeppoSAX
• A long, hard look at MCG-6-30-15 with XMM-Newton II: detailed EPIC analysis and modelling
• The Chandra High Energy Transmission Grating Observation of an X-ray Ionization Cone in Markarian 3
• A Long Look at NGC 3783 with the XMM-Newton Reflection Grating Spectrometers
• A Chandra X-ray Study of NGC 1068 - I. Observations of Extended Emission
• The XMM-Newton Iron Line Profile of NGC 3783
• Testing the Seyfert Unification Theory: Chandra HETGS Observations of NGC 1068
• Inner-shell 1s - 2p Soft X-ray Absorption Lines
• X-ray reprocessing in Seyfert Galaxies: simultaneous XMM-Newton/BeppoSAX observations
• The Soft X-ray Spectrum from NGC 1068 Observed with LETGS on Chandra
• High-resolution X-ray spectroscopy of the Seyfert 2 galaxy Circinus with Chandra
• Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-Resolved Spectroscopy of NGC 7314
• Resonant Absorption in the AGN spectra emerging from photoionized gas: differences between steep and flat ionizing continua
• Iron and Nickel properties in the X-ray reflecting region of the Circinus Galaxy
• XMM-Newton observation of an unusual iron line in the quasar Markarian 205
• The high energy emission line spectrum of NGC 1068
• Recombination spectra of Helium-Like Ions
• Fe K emission and absorption features in XMM-Newton spectra of Mkn 766 - evidence for reprocessing in flare ejecta
• High-resolution X-ray imaging and spectroscopy of the core of NGC 4945 with XMM-Newton and Chandra
• Ionized iron Kαlines in AGN X-ray spectra
• The recent X-ray history of NGC 5506
• The origin of the iron lines in NGC 7213
• The complex X-ray spectrum of NGC 4507
• XMM-Newton observation of the ULIRG NGC 6240: The physical nature of the complex Fe K line emission
• Iron Line Spectroscopy of NGC4593 with XMM-Newton: Where is the Black Hole Accretion Disk?
• The K-alpha complex of He-like iron with dielectronic satellites
• High Resolution X-ray Spectroscopy of the Fe K complex in IC 4329A
• K-shell dielectronic resonances in photoabsorption: differential oscillator strengths for Li-like C IV, O VI, and Fe XXIV
• X-ray He-like ions diagnostics: New Computations for Photoionized Plasmas: I. preliminary considerations

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