ROSAT OBSERVATIONS OF ACTIVE-GALACTIC-NUCLEI

The large number of Active Galactive Nuclei detected for the first time through their X-ray emission in the ROSAT All Sky Survey as well as the first measurements of the Xray emission of many previously known AGN provide a new unprecedented large basis for the statistical and morphological exploration of these objects. The soft energy range of the X-Ray Telescope, the good energy resolution of the PSPC detector, and the high sensitivity of the instrument further allows an investigation of the spectral properties of sources in this energetically important energy band. A short overview is given of the actual ongoing research concentrating on the study of the soft X-ray class properties of the various types of AGN.