SUMMARY OF PROPOSAL 43030 DR. NORBERT BADE HAMBURGER STERNWARTE GERMANY 21029 HAMBURG GOJENBERGSWEG 112 E-mail: NBADE@HS.UNI-HAMBURG.DE Tel: 040 7252 4137 Fax: 040 7252 4198 Medium: 4GBDAT Subject: AGN Title: X-RAY SPECTRAL EVOLUTION OF HIGH REDSHIFT RADIO QUIET QSO Abstract: We propose to observe two z > 2 QSO with ASCA. Both QSO are radio quiet and ROSAT PSPC observations have shown that they are bright enough for detailed spectroscopic studies. Up to now only radio loud highly redshifted QSO were studied with ASCA. The proposed objects can serve as examples of individual spectra of AGN contributing to the CXRB. Their extremely high luminosities can be used to verify the idea that radio quiet QSO are simply upgraded versions of Seyfert 1 galaxies. If this pictur Co-Is: 1 DIETER REIMERS HAMBURGER STERNWARTE GERMANY (No Co-I contact data) 2 WOLFGANG BRINKMANN MPE GARCHING GERMANY 3 HENNER FINK MPE GARCHING GERMANY 4 WOLFGANG VOGES MPE GARCHING GERMANY 5 JOCHEN GREINER MPE GARCHING GERMANY Target Name PRI RA Dec Time TC Off GIS SIS_Cts Obs ------------------- --- -------- -------- ---- -- --- --- ------- --- RX J11152+5320 2 168.7958 53.3436 40 N Y P 0.04500 1