SUMMARY OF PROPOSAL 61163
FACULTY OF SCIENCE, KYOTO UNIVERSITY
KYOTO JAPAN 606-01
KYOTO
KITASIRAKAWA-OIWAKE-CHOU, SAKYO-KU
Tel: +81-75-753-3851 Fax: +81-75-701-5377
Medium: 2.5GB8MM
Subject: AGN
X-RAY PROPERTIES OF HIDDEN QUASARS IN ULIRGS: ARE THEY INTRINSICALLY DIFFERENT FROM OPTICALLY SELECTED AGN?
ABSTRACT
We propose to obtain ASCA X-ray spectra of three Ultraluminous Infrared Galaxies (ULIRGs). For one source, IRAS 20210+1121, we detected a strong 6.4-keV line, with equivalent width about 1 keV, in the SAX spectrum. The other two sources, PKS 1345+1121 and IRAS 23498+2423, have near IR spectra which show the presence of broad Paschen alpha, providing clear evidence for a hidden quasar. Our question is, are the hard X-ray properties of ULIRGs as a class, different from other Seyfert 1s and quasars? A combined approach using existing optical and infrared data, together with the proposed ASCA X-ray observations, will answer this question.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| SHIRO UENO | LEICESTER UNIVERSITY | UK |
| HISAMITSU AWAKI | KYOTO UNIVERSITY | JAPAN |
| MARTIN WARD | LEICESTER UNIVERSITY | UK |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)IRAS 20210+1121 | 3 | 305.8579 | 11.5252 | 40 ks | N | Y | P | 0.05000 | 1 |