SUMMARY OF PROPOSAL 51164
RIKEN
SAITAMA JAPAN 351-01
WAKO-SHI
HIROSAWA 2-1
Tel: +81-48-462-1111 EXT.3221 Fax: +81-48-462-4640
Medium: 4GBDAT
Subject: AGN
OBSERVATIONS OF RADIO QUIET HIGH-Z QSO FOR THE CXB
ABSTRACT
So far observed distant (z>1) quasars mostly show steeper spectra in the 2-10 keV band than that of the cosmic X-ray background (CXB) . We have more than 80 well qualified AGN spectra by ASCA, but their properties are not well balanced due to poor observation sample of high z radio quiet (RQ) QSO s. A considerable fraction of low luminosity AGN have X-ray spectra as flat as the CXB. In this proposal we selected three high z RQ QSOs which were already detected in the ROSAT survey and/or pointing observations. We expect that these sources have considerable flat spectra with higher absorption. This confirmation is very important for AGN evolution as well as the CXB.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| CHIKO OTANI | RIKEN | JAPAN |
| TATEHIRO MIHARA | RIKEN | JAPAN |
| MASSIMO CAPPI | RIKEN | JAPAN |
| WOLFGANG BRINKMANN | MPE | GERMANY |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)1352-2242 | 2 | 208.9308 | -22.9519 | 40 ks | N | Y | P | 0.05600 | 1 |
| 2)0040+0034 | 2 | 10.8321 | 0.8544 | 40 ks | N | Y | P | 0.08300 | 1 |
TARGET 1
SUN ANGLE ALLOWING, WE REQUIRE THAT THE NEARBY (5' APART) GALAXY IRASF13526-2241 SHOULD BE IN THE FIELD OF VIEW OF BOTH GIS AND SIS.