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Can a Dusty Warm Absorber Model Reproduce the Soft X-ray Spectra of MCG-6-30-15 and Mrk 766?
M. Sako, S. M. Kahn, G. Branduardi-Raymont +8
XMM-Newton RGS spectra of MCG-6-30-15 and Mrk 766 exhibit complex discrete structure, which was interpreted in a paper by Branduardi-Raymont et al. (2001) as evidence for the exist…
High-Resolution X-Ray Spectroscopy of the Accretion Disk Corona Source 4U 1822-37
Jean Cottam, Masao Sako, Steven M. Kahn +2
We present a preliminary analysis of the X-ray spectrum of the accretion disk corona source, 4U 1822-37, obtained with the High Energy Transmission Grating Spectrometer onboard the…
High Resolution X-ray Spectroscopy of Seyfert 2 Galaxies
S. M. Kahn, A. Kinkhabwala, M. Sako +6
X-ray spectroscopy of Seyfert 2 galaxies provides an excellent probe of the circumnuclear environment in active galactic nuclei. The grating experiments on both Chandra and XMM-New…
Soft X-ray Spectroscopy of Seyfert 2 Galaxies
A. Kinkhabwala, M. Sako, E. Behar +6
Soft X-ray spectroscopy of Seyfert 2 galaxies offers perhaps the best method to probe the possible connection between AGN activity and star formation. Obscuration of powerful radia…
First Application of the Fe XVII I(17.10 A)/I(17.05 A) Line Ratio to Constrain the Plasma Density of a Cosmic X-ray Source
Christopher W. Mauche, Duane A. Liedahl, Kevin B. Fournier
We show that the Fe XVII I(17.10 A)/I(17.05 A) line ratio observed in the Chandra HETG spectrum of the intermediate polar EX Hydrae is significantly smaller than that observed in t…
Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
Randall K. Smith, Nancy S. Brickhouse, Duane A. Liedahl +1
New X-ray observatories (Chandra and XMM-Newton) are providing a wealth of high-resolution X-ray spectra in which hydrogen- and helium-like ions are usually strong features. We pre…