Showing 1995Show all
2 papers · 1 filter
astro-ph1995
Four new active galaxies with steep soft X-ray spectra
J. Greiner, R. Danner, N. Bade +3
We have discovered four AGN in the ROSAT all-sky-survey data with very steep X-ray spectra. We apply several models to these X-ray spectra with emphasis on warm absorber models whi…
astro-ph1995
X-RAY OUTBURST OF THE PECULIAR SEYFERT GALAXY IC 3599
D. Grupe, K. Beuermann, K. Mannheim +4
We report optical, soft X-ray, and UV observations of the peculiar Seyfert galaxy IC 3599 using data obtained with ROSAT and IUE. Most remarkably, we discovered a rapid decrease of…