6 citations · 12 across the 5 of their papers we have counts for
9 papers · 1 filter
X-ray emission/absorption mechanisms of 4 NLSy-1-like AGN and a radio quasar: QSO 0117-2837, RXJ0134.3-4258, NGC 4051, Mrk 1298, and 4C +74.26
Stefanie Komossa, Janek Meerschweinchen
We present a study of the X-ray variability properties and spectral shapes of five active galaxies all of which show extreme or enigmatic X-ray properties. We focus on QSO 0117-283…
X-ray properties of LINERs
Stefanie Komossa, Hans Boehringer, John P. Huchra
We present an investigation of the X-ray properties of 13 LINERs based on ROSAT all-sky survey and pointed PSPC and HRI observations. Several sources are studied for the first time…
Formation of Massive Black Holes in Early Mergers ?
Hartmut Schulz, Stefanie Komossa
We review theoretical and observational arguments favoring a scenario in which a typical massive black hole (MBH) is formed in the merger core of colliding disk systems at high z d…
The central radio source in the NGC 383 group: jet - IGM interaction ?
Stefanie Komossa, Hans Boehringer
The NGC 383 group is a rich group of galaxies that harbours the central radio source 3C 31 = NGC 383. After presenting results from the X-ray analysis of the extended intra-group m…
The WC6 Wolf-Rayet star MLA 1159 in M31 and its ionization nebula BA 1-642
J. Greiner, G. H. Tovmassian, S. Komossa +2
We report on optical imaging and spectroscopic observations of the Wolf-Rayet candidate star MLA 1159 and the surrounding ionization nebula BA 1-642 in the Andromeda Galaxy. Though…
The nature of the luminous X-ray emission of NGC 6240
Stefanie Komossa, Hartmut Schulz
We briefly review and extend our discussion of the ROSAT detection of the extraordinarily luminous (> 10^{42} erg/s) partly extended (> 30 kpc diameter) X-ray emission from the ult…