143 citations · 271 across the 6 of their papers we have counts for
6 papers
Spectroscopy of extended Lyα envelopes around z=4.5 quasars
P. L. North, F. Courbin, A. Eigenbrod +1
What are the frequency, shape, kinematics, and luminosity of Lyα envelopes surrounding radio-quiet quasars at high redshift, and is the luminosity of these envelopes related to tha…
The Properties and the Evolution of the Highly Ionized Gas in MR2251-178
Shai Kaspi, Hagai Netzer, Doron Chelouche +3
(abridged) We present the first XMM-Newton observations of the radio-quiet quasar MR2251-178 obtained in 2000 and 2002. The EPIC-pn spectra show a power-law continuum with a slope…
The Properties and the Evolution of the Highly Ionized Gas in MR2251-178
S. Kaspi, H. Netzer, D. Chelouche +3
We present the first XMM-Newton observations of the radio-quiet quasar MR2251-178. We model the X-ray spectrum with two power laws, one at high energies with a slope of Γ=1.6 and t…
Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?
T. J. Turner, R. F. Mushotzky, T. Yaqoob +6
We present results from a simultaneous Chandra HETG and XMM-Newton observation of NGC 3516. We find evidence for several narrow components of Fe Kalpha along with a broad line. We…
The Density and Location of the X-ray Absorbing Gas in NGC 3516
H. Netzer, D. Chelouche, I. M. George +4
A new Chandra observation and archival observations by ASCA are used to investigate spectral variations in the Sy1 galaxy NGC 3516 over a period of 7 years. A large change in flux…
The Detection of Circumnuclear X-ray Emission from the Seyfert Galaxy NGC 3516
I. M. George, T. J. Turner, H. Netzer +7
We present the first high-resolution, X-ray image of the circumnuclear regions of the Seyfert 1 galaxy NGC 3516, using the Chandra X-ray Observatory (CXO). All three of the CXO obs…