SUMMARY OF PROPOSAL 51181
OSAKA UNIVERSITY
OSAKA JAPAN 560
TOYONAKA
1-1, MACHIKANEYAMA
Tel: 06-850-5476 Fax: 06-850-5539
Medium: 2.5GB8MM
Subject: AGN
SEARCH FOR HIGH LOW STATE TRANSITION IN X-RAY SPECTRUM OF AGNS: H0707-495
ABSTRACT
H0707-495 is a and was observed with ASCA during AO-3 phase. It showed unusual X-ray spectrum consisting of soft blackbody like spectrum and hard power law, which is similar to that of steller black hole candidate in its high state. We found the X-ray inensity of this source decreased by facor of 1/30 from its detection by HEAO-1 sat to ASCA observation. We expect this source will exhibite spectrum transition from hight state to low state, the latter is characterized with usual single power law spectrum observed commonly in AGNs.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| KENN'ICHI TORII | OSAKA UNIVERSITY | JAPAN |
| TAKASHI TONERII | OSAKA UNIVERSITY | JAPAN |
| SACHIKO TANAKA | OSAKA UNIVERSITY | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)H0707-495 | 3 | 107.1725 | -49.5684 | 40 ks | N | Y | P | 0.20000 | 2 |
TARGET 1
TWO OBSERVATION SHOULD BE SEPARATED MORE THAN 3 MONTHS.