SUMMARY OF PROPOSAL 42147 DR IAN MICHAEL GEORGE GODDARD SPACE FLIGHT CENTER MD USA 20771 GREENBELT GREENBELT ROAD E-mail: LHEAVX::GEORGE Tel: 301-286-6094 Fax: 301-286-1684 Medium: 4GBDAT Subject: AGN Title: WARM ABSORBERS IN QUASARS Abstract: X-ray absorption appears to be relatively common in low luminosity AGN, yet uncommon in quasars. Indeed there are no clear cases of cold circumnuclear absorption in quasars, only three documented cases of warm absorbers: MR2251-178, 3C351 and PG1114+445. MR2251-178 has already been observed by ASCA, and here we propose observations of 3C351 and PG1114+445. The proposed observations will allow examination of ionization state and column density of the warm absorber gas, and hence provide a vital insight into the relationship between AGN radio properties, luminosity and the state of the circumnuclear material. Co-Is: 1 JANE TURNER NASA/GSFC/USRA USA LHEAVX::TURNER 301-286-5190 2 ARI LAOR CALTECH USA 3 HAGAI NETZER TEL AVIV UNIV. ISRAEL 4 RICHARD MUSHOTZKY NASA/GSFC USA 5 FABRIZIO FIORE CFA USA 6 KIRPAL NANDRA NASA/GSFC/NRC USA Target Name PRI RA Dec Time TC Off GIS SIS_Cts Obs ------------------- --- -------- -------- ---- -- --- --- ------- --- PG 1114+445 0 169.2750 44.2269 50 N Y P 0.05000 1