SUMMARY OF PROPOSAL 72156
THE PENNSYLVANIA STATE UNIVERSITY
525 DAVEY LAB
UNIVERSITY PARK
PA USA 16802
Tel: (814) 865-0418 Fax: (814) 863-3399
Medium: CD ROM
Subject: AGN
RESOLVING THE NATURE OF SOFT X-RAY WEAK QUASARS: A SYSTEMATIC ASCA STUDY OF A COMPLETE AND WELL-DEFINED SAMPLE
ABSTRACT
We propose 6 ASCA observations designed to complete a study of a well-defined sample of 9 `soft X-ray weak' PG quasars. These quasars are anomalously faint below 2 keV, and the physical reason for their soft X-ray weakness is not yet established. Our ASCA observation of the soft X-ray weak quasar PG 1411+442 has revealed heavy intrinsic X-ray absorption, and the proposed ASCA observations will allow us to test if absorption is the universal cause of soft X-ray weak quasars. Four of our targets are known to have fascinating intrinsic UV absorption, and we will explore relations between the properties of the UV and X-ray absorption. In particular, we will examine whether soft X-ray weak quasars are the transitional objects between associated `warm' absorber systems and BALQSOs.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| ARI LAOR | TECHNION | ISRAEL |
| MARTIN ELVIS | SAO | USA |
| FABRIZIO FIORE | OSS. DI ROMA | ITALY |
| SMITA MATHUR | SAO | USA |
| BEV WILLS | U. TEXAS - AUSTIN | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)PG 1535+547 | B | 234.1583 | 54.5592 | 40 ks | N | Y | P | 0.02100 | 1 |
| 2)PG 2214+139 | C | 334.3000 | 14.2392 | 40 ks | N | Y | P | 0.02700 | 1 |
| 3)PG 1126-041 | C | 172.3208 | -4.4022 | 40 ks | N | Y | P | 0.02000 | 1 |
| 4)PG 2112+059 | C | 318.7208 | 6.1286 | 40 ks | N | Y | P | 0.01800 | 1 |
| 5)PG 1011-040 | C | 153.5875 | -4.3106 | 40 ks | N | Y | P | 0.01900 | 1 |