77 citations · 448 across the 16 of their papers we have counts for
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Vertical broad-line region structure in nearby active galactic nuclei
W. Kollatschny, M. Zetzl
Broad emission lines are emitted in the surroundings of supermassive black holes in the centers of active galactic nuclei (AGN). This region is spatially not resolved. We intend to…
Accretion disk wind as explanation for the broad-line region structure in NGC 5548
W. Kollatschny, M. Zetzl
Supermassive black holes in the centers of active galactic nuclei (AGN) are surrounded by broad-line regions (BLRs). The broad emission lines seen in the AGN spectra are emitted in…
The shape of broad-line profiles in AGN
W. Kollatschny, M. Zetzl
We present a study of the broad optical/UV emission line profiles in AGN (active galactic nuclei) to get information on the dominant velocity components (turbulence, rotation, etc.…
The environment of AGNs and the activity degree of their surrounding galaxies
W. Kollatschny, A. Reichstein, M. Zetzl
Aims. We present results of a comprehensive spectral study on the large-scale environment of AGNs based on Sloan Spectroscopic Survey data. Methods. We analyzed the spectra of gala…
Reverberation Mapping of the Intermediate Mass Nuclear Black Hole in SDSS J114008.71+030711.4
Stephen Rafter, Shai Kaspi, Ehud Behar +2
We present the results of a reverberation mapping (RM) campaign on the black hole (BH) associated with the active galactic nucleus (AGN) in SDSS J114008.71+030711.4 (hereafter GH08…
Line profile and continuum variability in the very broad-line Seyfert galaxy Mrk 926
W. Kollatschny, M. Zetzl
We present results of an intensive spectroscopic variability campaign of the very broad-line Seyfert 1 galaxy Mrk 926. Our aim is to investigate the broad-line region (BLR) by stud…