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X-ray reflection from cold matter in Active Galactic Nuclei and X-ray binaries
Weak, broad emission lines due to low-ionisation stages of iron, and other spectral features, have recently been observed in the X-ray spectra of Active Galactic Nuclei and in some Galatic X-ray
The ROSAT Brightest Cluster Sample — I. The compilation of the sample and the cluster log N—log S distribution
We present a 90 per cent flux-complete sample of the 201 X-ray-brightest clusters of galaxies in the northern hemisphere (δ ≥ 0°), at high Galactic latitudes (|b| ≥ 20°), with measured redshifts z ≤
Piecing together the X-ray background : bolometric corrections for active galactic nuclei
The X-ray background can be used to constrain the accretion history of supermassive black holes (SMBHs) in active galactic nuclei (AGN), with the SMBH mass density related to the energy density due
X-ray fluorescence from the inner disc in Cygnus X-1
Les spectres RX de nombreuses sources de trous noirs en accretion suggerent la presence de matiere relativement froide entouree d'un plasma emetteur de RX dur. Les raies fluorescentes du fer sont
Gravitationally redshifted emission implying an accretion disk and massive black hole in the active galaxy MCG–6–30–15
ACTIVE galactic nuclei and quasars are probably powered by the accretion of gas onto a supermassive black hole at the centre of the host galaxy1, but direct confirmation of the presence of a black
The ROSAT Brightest Cluster Sample - IV. The extended sample
We present a low-flux extension of the X-ray-selected ROSAT Brightest Cluster Sample (BCS) published in Paper I of this series. Like the original BCS and employing an identical selection procedure,
Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM–Newton: spectral energy distributions for the reverberation mapped sample
We employ contemporaneous optical, ultraviolet (UV) and X-ray observations from the XMM–Newton European Photon Imaging Camera (EPIC-pn) and Optical Monitor (OM) archives to present, for the first
We present source catalogs for the 4 Ms Chandra Deep Field-South (CDF-S), which is the deepest Chandra survey to date and covers an area of 464.5 arcmin2. We provide a main Chandra source catalog,
Observational Evidence of Active Galactic Nuclei Feedback
Radiation, winds, and jets from the active nucleus of a massive galaxy can interact with its interstellar medium, and this can lead to ejection or heating of the gas. This terminates star formation