SUMMARY OF PROPOSAL 71114

PROFESSOR FUMIYOSHI MAKINO
MAKINO@astro.isas.jaxa.jp

ISAS
3-1-1, YOSHINODAI
SAGAMIHARA
KANAGAWA JAPAN 229-8510
Tel: 0427-59-8154 Fax: 0427-59-8455
Medium: 2.5GB8MM
Subject: AGN

OBSERVATIONS OF HIGH Z QUASARS


ABSTRACT

The observation of high z quasars are essential for the study of evolution of AGNs and its connection to cosmic X-ray backgroud. So far, seven high z (z>3) quasars were observed with ASCA. The correlation between z-value and spectral index showed the trend of spectral hardening with incresing z-value. The flux of radio loud quasars was higher than that of radio quiet quasars in average. The X-ray spectra were flatter than those in optical and UV bands. These properties suggests blazar type activity and structure. By this reason, we propose organized observation of X-rays and space VLBI to study connection of X-ray emission to sub-mas radio morphology.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
TADAYUKI TAKAHASHIISASJAPAN
LEONID GURVITSJOIN INST. VLBINETH
BISWAJIT PAULISASJAPAN
HISASHI HIRABAYASHIISASJAPAN
RIKAKO OKAYASUISASJAPAN

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)QSO 0642+449
C
101.6333 44.8547
40 ks
N
Y
P
0.05000
1