Inner-shell 1s - 2p Soft X-ray Absorption Lines

Abstract

The HULLAC atomic code is used to compute wavelengths and oscillator strengths for the 1s - np inner-shell absorption lines in Li-like to F-like ions of neon, magnesium, aluminum, silicon, sulfur, argon, calcium, and iron. Many of these lines are expected to be observed in Chandra and XMM-Newton high-resolution X-ray spectra of active galaxies. The new atomic data are incorporated in the ION code for spectral modeling of photoionized plasmas. The calculated spectra are subsequently compared with the spectrum of NGC 3783 and show very good agreement. The usefulness of these lines as diagnostics for the ionization state, column densities, and velocities in line-of-sight photoionized gas is called attention to.

Scheduled for the v570 n1 ApJ May 1, 2002 issue

References in corpus (4)

• Revealing the Dusty Warm Absorber in MCG--6-30-15 with the Chandra HETG
• High-Resolution X-ray Spectroscopy and Modeling of the Absorbing and Emitting Outflow in NGC 3783
• Soft X-Ray Absorption by Fe${}^{0+}$ to Fe${}^{15+}$ in Active Galactic Nuclei
• K-shell dielectronic resonances in photoabsorption: differential oscillator strengths for Li-like C IV, O VI, and Fe XXIV

Cited by in corpus (50)

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• Chandra/HETGS Spectroscopy of the Galactic Black Hole GX 339-4: A Relativistic Iron Line and Evidence for a Seyfert-like Warm Absorber
• Atomic Data for X-ray Astrophysics
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• X-ray Absorption Line Spectroscopy of the Galactic Hot Interstellar Medium
• Simultaneous Ultraviolet and X-ray Observations of the Seyfert Galaxy NGC 4151. I. Physical Conditions in the X-ray Absorbers
• Multiwavelength studies of the Seyfert 1 galaxy NGC7469. II - X-ray and UV observations with XMM-Newton
• Quantifying the fast outflow in the luminous Seyfert galaxy PG1211+143
• Complex X-ray Absorption and the Fe Kalpha Profile in NGC 3516
• Fe XXV and Fe XXVI lines from low velocity, photoionised gas in the X-ray spectra of AGN
• A Chandra HETGS Spectral Study of the Iron K Bandpass in MCG-6-30-15: A Narrow View of the Broad Iron Line
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• Relativistic O VIII Emission and Ionized Outflow in NGC 4051
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• High resolution X-ray spectroscopy of the multiphase interstellar medium toward Cyg X-2
• The High-Velocity Outflow of PG1211+143 May Not be That Fast
• The Effects of Low-Temperature Dielectronic Recombination on the Relative Populations of the Fe M-Shell States
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• Photoionization modeling of oxygen K absorption in the interstellar medium:the Chandra grating spectra of XTE J1817-330
• Detection of highly ionized O and Ne absorption lines in the X-ray spectrum of 4U1820-303 in the globular cluster, NGC 6624
• Chandra View of the Warm-Hot IGM toward 1ES 1553+113: Absorption Line Detections and Identifications (Paper I)
• Laboratory Measurements of the K-shell transition energies in L-shell ions of Si and S
• Mutiwavelength Observations of Radio Galaxy 3C 120 with XMM-Newton
• Wavelength Measurements of K Transitions of Oxygen, Neon, and Magnesium with X-ray Absorption Lines
• Multiwavelength campaign on Mrk 509. II. Analysis of high-quality Reflection Grating Spectrometer spectra
• A High Resolution View of the Warm Absorber in the Quasar MR2251-178
• Constraints on hot metals in the Vicinity of the Galaxy
• Assessment of the Fluorescence and Auger Data Base used in Plasma Modeling
• X-Ray Absorption Analysis of MCG-6-30-15: Discerning Three Kinematic Systems
• X-Ray Absorption Analysis of NGC3516: Appearance of Fast Components with Increased Source Flux
• High-resolution X-ray spectroscopy of the stellar wind in Vela X-1 during a flare
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• Detection of Highly Ionized Metal Absorption Lines in the Ultracompact X-ray Dipper 4U 1916-05
• Dramatic Variability of X-ray Absorption Lines in the Black Hole Candidate Cygnus X-1
• Non-Sobolev modelling of radiation pressure driven flows in Active Galactic Nuclei
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