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

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

2002-01-24

arxiv.org/abs/astro-ph/0201416v1

Astronomy and Astrophysics

Astrophysics

Scheduled for the v570 n1 ApJ May 1, 2002 issue

Scientific paper

10.1086/339581

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.

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