Add to ORKGX-rays are a powerful probe of the physical conditions in the nuclei of active galaxies. We review the X-ray properties of radio-quiet AGN, LINERs and ultraluminous IR galaxies based on observations carried out with the X-ray satellite ROSAT. We then summarize the observations of giant X-ray flares from non-active galaxies, interpreted as stellar tidal disruptions by supermassive black holes
X-ray emission of active galactic nuclei (AGN) can be considered as a powerful probe of the close en...
Deep X-ray surveys using ROSAT, ASCA and BeppoSAX have resolved a significant fraction of the cosmic...
Active galactic nuclei Nowadays it is widely accepted that every massive galaxy harbors a supermassi...
X-rays are a powerful probe of the physical conditions in the nuclei of active galaxies. We review t...
We have found compact X-ray sources in the center of 21 (54%) of 39 nearby face-on spiral and ellipt...
During a close encounter between a star and a supermassive black hole, the star can get disrupted by...
The observations and theory of the exciting new class of galactic black hole X-ray transients is rev...
The tidal disruption of stars by supermassive black holes produces luminous soft X-ray accretion fla...
Active galactic nuclei (AGN) show evidence for reprocessing gas, outflowing from the accreting black...
Using infrared and X-ray diagnostics, we study star--formation and black hole accretion in nearby an...
Using infrared and X-ray diagnostics, we study star--formation and black hole accretion in nearby an...
One of the great mysteries surrounding active galactic nuclei (AGN) is their triggering mechanism. ...
Active galactic nuclei (AGN) are complex phenomena. At the heart of an AGN is a relativistic accreti...
We have found compact, near-nuclear X-ray sources in 21 (54\%) of a complete sample of 39 nearby fac...
We present a uniform and systematic analysis of the 0.6-10 keV X-ray spectra of radio-loud active ga...
X-ray emission of active galactic nuclei (AGN) can be considered as a powerful probe of the close en...
Deep X-ray surveys using ROSAT, ASCA and BeppoSAX have resolved a significant fraction of the cosmic...
Active galactic nuclei Nowadays it is widely accepted that every massive galaxy harbors a supermassi...
X-rays are a powerful probe of the physical conditions in the nuclei of active galaxies. We review t...
We have found compact X-ray sources in the center of 21 (54%) of 39 nearby face-on spiral and ellipt...
During a close encounter between a star and a supermassive black hole, the star can get disrupted by...
The observations and theory of the exciting new class of galactic black hole X-ray transients is rev...
The tidal disruption of stars by supermassive black holes produces luminous soft X-ray accretion fla...
Active galactic nuclei (AGN) show evidence for reprocessing gas, outflowing from the accreting black...
Using infrared and X-ray diagnostics, we study star--formation and black hole accretion in nearby an...
Using infrared and X-ray diagnostics, we study star--formation and black hole accretion in nearby an...
One of the great mysteries surrounding active galactic nuclei (AGN) is their triggering mechanism. ...
Active galactic nuclei (AGN) are complex phenomena. At the heart of an AGN is a relativistic accreti...
We have found compact, near-nuclear X-ray sources in 21 (54\%) of a complete sample of 39 nearby fac...
We present a uniform and systematic analysis of the 0.6-10 keV X-ray spectra of radio-loud active ga...
X-ray emission of active galactic nuclei (AGN) can be considered as a powerful probe of the close en...
Deep X-ray surveys using ROSAT, ASCA and BeppoSAX have resolved a significant fraction of the cosmic...
Active galactic nuclei Nowadays it is widely accepted that every massive galaxy harbors a supermassi...