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Ionization structure of the warm wind in NGC 5548
K. C. Steenbrugge, J. S. Kaastra, D. M. Crenshaw +7
We present the results from our 140 ks XMM-Newton and 500 ks Chandra observation of NGC 5548. The velocity structure of the X-ray absorber is consistent with the velocity structure…
X-Ray Evidence for Multiple Absorbing Structures in Seyfert Nuclei
Jonathan M. Gelbord, Kimberly A. Weaver, Tahir Yaqoob
We have discovered a correlation between the X-ray absorbing column densities within Seyfert galaxies and the relative alignment between the central engines and their host galactic…
Evidence for Gravitational Infall of Matter onto the Super-Massive Black Hole in the quasar PG 1211+143?
J. N. Reeves, K. Pounds, P. Uttley +5
We report the detection of redshifted iron K-alpha absorption lines in the Chandra LETG spectrum of the narrow-line quasar, PG 1211+143. The absorption lines are observed at 4.22 k…
Relativistic outflow in CXO CDFS J033260.0-274748
J. X. Wang, T. G. Wang, P. Tozzi +10
In this letter we report the detection of a strong and extremely blueshifted X-ray absorption feature in the 1 Ms Chandra spectrum of CXO CDFS J033260.0-274748, a quasar at z = 2.5…
Constraints on hot metals in the Vicinity of the Galaxy
B. McKernan, T. Yaqoob, C. S. Reynolds
We have searched for evidence of soft X-ray absorption by hot metals in the vicinity of the Galaxy in the spectra of a small sample of fifteen Type I AGN observed with the high res…
Chandra High-Resolution X-ray Spectroscopy of the Fe K Line in the Seyfert 1 Galaxy NGC 3783
T. Yaqoob, J. N. Reeves, A. Markowitz +2
We report on the results of detailed X-ray spectroscopy of the Fe K region in the Seyfert 1 galaxy NGC 3783 from five ~170 ks observations with the Chandra high energy gratings. Mo…
Iron K Features in the Quasar E 1821+643: Evidence for Gravitationally Redshifted Absorption?
T. Yaqoob, P. J. Serlemitsos
We report a Chandra high-energy grating detection of a narrow, redshifted absorption line superimposed on the red wing of a broad Fe K line in the quasar E1821+643. The a…
Simultaneous X-ray and UV spectroscopy of the Seyfert 1 galaxy NGC 5548.II. Physical conditions in the X-ray absorber
K. C. Steenbrugge, J. S. Kaastra, D. M. Crenshaw +8
We present the results from a 500 ks Chandra observation of the Seyfert 1 galaxy NGC 5548. We detect broadened emission lines of O VII and C VI in the spectra, similar to those obs…