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X-ray Evidence for Multiple Absorbing Structures in Seyfert Galaxies
Jonathan Gelbord, K. A. Weaver, T. Yaqoob
We have used X-ray spectra to measure attenuating columns in a large sample of Seyfert galaxies. Over 30 of these sources have resolved radio jets, allowing the relative orientatio…
O VII and O VIII absorption by hot gas in the vicinity of the Galaxy
B. McKernan, T. Yaqoob, C. S. Reynolds
(abridged) We searched for evidence of soft X-ray absorption by hot gas in the vicinity of the Galaxy in a small sample of fifteen type I AGN observed with the high resolution X-ra…
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…
An extended scheme for fitting X-ray data with accretion disk spectra in the strong gravity regime
M. Dovciak, V. Karas, T. Yaqoob
Accreting black holes are believed to emit X-rays which then mediate information about strong gravity in the vicinity of the emission region. We report on a set of new routines for…
High Resolution X-ray Spectroscopy of the Fe K complex in IC 4329A
B. McKernan, T. Yaqoob
We report the detection of complex Fe K line emission from a Chandra High Energy Transmission Grating Spectrometer observation of the Seyfert 1 galaxy IC 4329A. The line emission i…