SUMMARY OF PROPOSAL 51164
SAITAMA JAPAN 351-01
Tel: +81-48-462-1111 EXT.3221 Fax: +81-48-462-4640
OBSERVATIONS OF RADIO QUIET HIGH-Z QSO FOR THE CXB
ABSTRACTSo 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-I NAME ||INSTITUTE ||COUNTRY |
| TATEHIRO MIHARA||RIKEN||JAPAN|
| MASSIMO CAPPI||RIKEN||JAPAN|
| WOLFGANG BRINKMANN||MPE||GERMANY|
|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 1SUN ANGLE ALLOWING, WE REQUIRE THAT THE NEARBY (5' APART) GALAXY IRASF13526-2241 SHOULD BE IN THE FIELD OF VIEW OF BOTH GIS AND SIS.