SUMMARY OF PROPOSAL 63029
OSSERVATORIO ASTRONOMICO DI BOLOGNA
VIA ZAMBONI 33
BOLOGNA
ITALY I-40126
Tel: +39-51-259419 Fax: +39-51-259407
Medium: 4GBDAT
Subject: AGN
X-RAY SPECTRA OF HIGH-REDSHIFT (Z > 2) RADIO-QUIET QUASARS
ABSTRACT
Recent ROSAT and ASCA observations of several high-redshift radio-loud quasars have unambiguosly revelead that substantial intrinsic absorption, evolving with the cosmic time, is a common property among these objects. On the other side, the spectral evolutive properties of radio-quiet quasars are poorly known due to the paucity of the observed objects. In a collaborative effort with our Japanese colleagues at RIKEN we have undertaken a project aimed to build a sizeable sample of high-redshift radio-quiet quasars (RQQ). The here proposed observations of two z > 2 RQQ will allow us to obtain broad band X--ray spectra of good statistical quality. The comparison with the already available data will permit to study with unprecedent detail the quasar emission mechanism and its evolution.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MASSIMO CAPPI | ITESRE-CNR/RIKEN | ITALY |
| CRISTIAN VIGNALI | BOLOGNA UNIVERSITY | ITALY |
| MASARU MATSUOKA | RIKEN | JAPAN |
| FABRIZIO FIORE | OSS. ASTR. DI ROMA | ITALY |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)QSO 0059-304A | 1 | 15.3754 | -30.1620 | 40 ks | N | N | P | 0.02020 | 1 |
| 2)QSO 0130-4124 | 1 | 23.1692 | -41.1489 | 40 ks | N | N | P | 0.01280 | 1 |