2.1k citations · 4.5k across the 46 of their papers we have counts for
5 papers · 2 filters
Fe L-Shell Density Diagnostics in Theory and Practice
Christopher W. Mauche, Duane A. Liedahl, Kevin B. Fournier
We provide a discussion of the density and photoexcitation sensitivity of the X-ray spectra of Fe L-shell ions (Fe XVII-Fe XXIV) calculated with the Livermore X-ray Spectral Synthe…
Identification of an Extended Accretion Disk Corona in the Hercules X-1 Low State: Moderate Optical Depth, Precise Density Determination, and Verification of CNO Abundances
Mario A. Jimenez-Garate, John C. Raymond, Duane A. Liedahl +1
We identify an accretion disk atmosphere and corona from the high resolution X-ray spectrum of Hercules X-1, and we determine its detailed physical properties. More than two dozen…
Simultaneous X-ray and Ultraviolet spectroscopy of the Seyfert galaxy NGC 5548. III. X-ray time variability
J. S. Kaastra, K. C. Steenbrugge, D. M. Crenshaw +8
The Seyfert 1 galaxy NGC 5548 was observed for a week by Chandra using both the HETGS and LETGS spectrometers. In this paper we study the time variability of the continuum radiatio…
Atomic X-Ray Spectra of Accretion Disk Atmospheres in the Kerr Metric
Mario A. Jimenez-Garate, Duane A. Liedahl, Christopher W. Mauche +1
We calculate the atmospheric structure of an accretion disk around a Kerr black hole and obtain its X-ray spectrum, which exhibits prominent atomic transitions under certain circum…
Reprocessing of Soft X-ray Emission Lines in Black Hole Accretion Disks
Christopher W. Mauche, Duane A. Liedahl, Benjamin F. Mathiesen +2
By means of a Monte Carlo code that accounts for Compton scattering and photoabsorption followed by recombination, we have investigated the radiation transfer of Ly alpha, He alpha…