929 citations · 5.4k across the 66 of their papers we have counts for
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astro-ph2002★ 6 cited
The X-ray evolving universe: (ionized) absorption and dust, from nearby Seyfert galaxies to high-redshift quasars
Stefanie Komossa, Guenther Hasinger
(Abridged) Cold and warm absorbers have beeen detected in all types of active galaxies (AGN) from low to high redshift. This gas, located in the black hole region of AGN, is though…
astro-ph2002
The sources of the X-ray background
Guenther Hasinger
Deep X-ray surveys have shown that the cosmic X-ray background (XRB) is largely due to the accretion onto supermassive black holes, integrated over cosmic time. The ROSAT, Chandra…
astro-ph2002★ 1 cited
XMM-Newton observations of the Lockman Hole : Spectral analysis
V. Mainieri, J. Bergeron, P. Rosati +2
We present the results of the X-ray spectral analysis of the deep survey obtained with the XMM-Newton observatory on the Lockman Hole. The X-ray data and the cumulative source coun…