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High-Resolution {\it Chandra} Spectroscopy of tau Scorpii: A Narrow-Line X-ray Spectrum From a Hot Star
David H. Cohen, Geneviève E. de Messières, Joseph J. MacFarlane +4
Long known to be an unusual early-type star by virtue of its hard and strong X-ray emission, tau Scorpii poses a severe challenge to the standard picture of O-star wind-shock X-ray…
The Structure and X-ray Recombination Emission of a Centrally Illuminated Accretion Disk Atmosphere and Corona
M. A. Jimenez-Garate, J. C. Raymond, D. A. Liedahl
We model an accretion disk atmosphere and corona photoionized by a central X-ray continuum source. We calculate the opacity and radiation transfer for an array of disk radii, to ob…
Resolving the Effects of Resonant X-ray Line Scattering in Cen X-3 with Chandra
Patrick S. Wojdowski, Duane A. Liedahl, Masao Sako +2
The massive X-ray binary Cen X-3 was observed over approximately one quarter of the system's 2.08 day orbit, beginning before eclipse and ending slightly after eclipse center with…
XMM-Newton Reflection Grating Spectrometer Observations of Discrete Soft-X-ray Emission Features from NGC 1068
A. Kinkhabwala, M. Sako, E. Behar +6
We present the first high-resolution, soft-X-ray spectrum of the prototypical Seyfert 2 galaxy, NGC 1068. This spectrum was obtained with the XMM-Newton Reflection Grating Spectrom…
Soft X-ray Spectroscopy of NGC 1068 with XMM-Newton RGS and Chandra LETGS
A. Kinkhabwala, M. Sako, E. Behar +7
We present high-resolution soft-X-ray spectra of the prototypical Seyfert 2 galaxy, NGC 1068, taken with XMM-Newton RGS and Chandra LETGS. Its rich emission-line spectrum is domina…
X-ray spectroscopy of NGC 5548
J. S. Kaastra, K. C. Steenbrugge, A. J. J. Raassen +5
We analyze the high-resolution X-ray spectrum of the Seyfert 1 galaxy NGC 5548, for the full 0.1-10 keV band, using improved calibration results of the Chandra-LETGS instrument. Th…