SUMMARY OF PROPOSAL 52150
GODDARD SPACE FLIGHT CENTER
GREENBELT ROAD
GREENBELT
MD USA 20771
Tel: 301-286-6094 Fax: 301-286-1684
Medium: 4GBDAT
Subject: AGN
A DETAILED STUDY OF THE UV AND X-RAY ABSORBERS IN PG1309+355
ABSTRACT
X-ray absorption is common in low luminosity AGN, yet uncommon in quasars (only 3 documented cases). New AO4 observations of one of these, PG1114+445, show strong X-ray absorption typical of highly ionized gas. HST observations show a strong Ovi 1034 absorption line. We demonstrate that a good way of detecting warm absorbers is to observe objects with strong UV absorption lines. PG1309+355 shows such lines and some X-ray absorption in a poorly exposed ROSAT spectrum. This is an ideal ASCA target which is likely to show as another high luminosity X-ray absorbed AGN. We will study the ionization, column density and K-line and edges in this source and will investigate the general question of X-ray absorption across a large luminosity range.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| JANE TURNER | NASA/GSFC/USRA | USA |
| ARI LAOR | TECHNION | ISRAEL |
| HAGAI NETZER | TEL AVIV UNIV. | ISRAEL |
| BEV WILLS | UNIV. TEXAS | USA |
| RICHARD MUSHOTZKY | NASA/GSFC | USA |
| FABRIZIO FIORE | SAXSDC | ITALY |
| KIRPAL NANDRA | NASA/GSFC/NRC | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)PG1309+355 | 1 | 198.0737 | 35.2556 | 60 ks | N | Y | P | 0.08000 | 1 |