6 citations · 12 across the 5 of their papers we have counts for
6 papers · 1 filter
Searching for X-ray Galaxy Clusters in the Zone of Avoidance
H. Boehringer, P. Schuecker, S. Komossa +3
Based on the ROSAT All-Sky Survey we are constructing a sample of the X-ray brightest galaxy clusters for cosmological studies. We have already completed the compilation of a sampl…
Properties of Warm absorbers in Narrow-Line Seyfert 1 galaxies
S. Komossa
We present a study of the X-ray properties of several NLS1 galaxies, focusing on their warm absorbers. In the first part, we discuss properties of dusty and dust-free warm absorber…
1E 0117.2-2837 and the NLR of Narrow-Line Seyfert 1 galaxies
S. Komossa, D. Grupe, M. Janek
Based on photoionization calculations we present a study of the NLR emission line ratios of Narrow-line Seyfert 1 (NLS1) galaxies. In particular, we investigate the influence of di…
X-ray absorption lines in the Seyfert 1 galaxy NGC 5548 discovered with Chandra-LETGS
J. S. Kaastra, R. Mewe, D. A. Liedahl +2
We present for the first time a high-resolution X-ray spectrum of a Seyfert galaxy. The Chandra-LETGS spectrum of NGC 5548 shows strong, narrow absorption lines from highly ionised…
Warm Absorbers in Active Galactic Nuclei
Stefanie Komossa
We first provide a review of the properties of warm absorbers concentrating on what we have learned from ROSAT and ASCA. This includes dusty and dust-free warm absorbers, non-X-ray…
The giant X-ray outbursts from nearby, non-active galaxies: tidal disruption flares ?
Stefanie Komossa
One efficient method to probe the direct vicinity of SMBHs in nearby galaxies is to make use of the detection of flares from tidally disrupted stars (e.g., Lidskii & Ozernoi 1979,…