SUMMARY OF PROPOSAL 41187 DR KAZUSHI IWASAWA NAGOYA UNIVERSITY AICHI JAPAN 464-01 NAGOYA CHIKUSA-KU E-mail: IWASAWA@SATIO.PHYS.NAGOYA-U.AC.JP Tel: 052-789-2918 Fax: 052-789-2919 Medium: 2.5GB8MM Subject: AGN Title: ASCA OBSERVATIONS OF POWERFUL RADIO GALAXIES: BURIED ACTIVE NUCLEI ? Abstract: We propose ASCA observations of two powerful radio galaxies, 3C353 and 4C+55.16, in which bright X-ray emission (>1E-11 erg/s/cm2) were detected with the HEAO-1 experiments. One has a large-scale radio structure classified as FRII, and the other is a core-dominated compact radio source. Despite of the large luminosities in radio and X-ray, optical properties of both objects do not indicate strong activities. Detailed X-ray spectroscopy provides information about central source to extend the unified model to radio-loud objects, and to test the relationship between X-ray nature and radio power/morphology. Co-Is: 1 CHRIS REYNOLDS IOA, CAMBRIDGE UK (No Co-I contact data) 2 ANDY FABIAN IOA, CAMBRIDGE UK Target Name PRI RA Dec Time TC Off GIS SIS_Cts Obs ------------------- --- -------- -------- ---- -- --- --- ------- --- 4C+55.16 2 128.7287 55.5725 40 N Y P 0.16000 1 3C353 2 260.1158 0.9796 40 N Y P 0.11000 1