SUMMARY OF PROPOSAL 61150

DR. HIDEYO KUNIEDA
KUNIEDA@SATIO.PHYS.NAGOYA-U.AC.JP

NAGOYA UNIV.
AICHI JAPAN 464-01
NAGOYA
CHIKUSA-KU
Tel: 052-789-2918 Fax: 052-789-2919
Medium: 4GBDAT
Subject: AGN

IONIZED IRON K EMISSION LINE FROM THE SEYFERT GALAXY NGC4579 - PROBING IONIZATION STRUCTURE OF AN ACCRETION DISK -


ABSTRACT

We detected an ionized iron line from NGC4579 in spite of very low luminosity Lx=1.4E41ergs/s by a 30ksec ASCA observation. The center energy of the line (6.7keV) is significantly higher than 6.4keV which is typical for usual Seyfert 1 galaxies. We propose detailed measurements of iron line profiles in the low luminosity Seyfert 1 galaxy NGC4579. We investigate dynamical and ionization structure of an accretion disk in this remarkable Seyfert galaxy using line profiles and center energy. We also determine size and density of a disk comparing our X-ray results with blackhole mass determined with HST STIS data.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
YUICHI TERASHIMANAGOYA UNIV.JAPAN
KAZUTAMI MISAKINAGOYA UNIV.JAPAN
TAKASHI OKAJIMANAGOYA UNIV.JAPAN
HARUMI TAKATANAGOYA UNIV.JAPAN

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)NGC4579
3
189.4313 11.8181 40 ksN
Y
P
0.16000
2

TARGET 1

TWO TIMES 50KSEC OBSERVATIONS WITH AN INTERVAL OF ONE WEEK