SUMMARY OF PROPOSAL 81602
UNIVERSITY OF TOKYO
7-3-1 HONGO
BUNKYO-KU
TOKYO JAPAN 113-0033
Tel: +81-03-5841-4171 Fax: +81-03-5841-4059
Medium: CD ROM
Subject: NORMAL GALAXIES
LONG EXPOSURE ONTO AN ULTRA-LUMINOUS COMPACT SOURCE IN IC342
ABSTRACT
We propose to observe the ultra-luminous, highly variable, compact X-ray source, called source~1, located in the nearby spiral galaxy IC342. Its spectra obtained in the ASCA PV observation can be described very well with a mult-color disk blackbody model of T_{in} 1.7 keV, suggesting that the object is a mass accreting black hole (BH). However, the high value of T_{in} apparently contradicts the high BH mass required by its high luminosity up to 2 10^{40} ergs s^{-1}. A 200 ksec exposure onto this object will help us solve these puzzles, through; (1) a search for the oribtal period; (2) study of the short-term variability; (3) better quantification of the spectrum; and (4) investigation of the spectral changes.
CO-INVESTIGATORS
CO-I NAME | INSTITUTE | COUNTRY |
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TSUNEFUMI MIZUNO | DPT.PHYSICS, U.TOKYO | JAPAN |
AYA KUBOTA | DPT.PHYSICS, U.TOKYO | JAPAN |
MAKOTO TASHIRO | DPT.PHYSICS, U.TOKYO | JAPAN |
TADAYASU DOTANI | ISAS | JAPAN |
KAZUHISA MITSUDA | ISAS | JAPAN |
YOSHIHIRO UEDA | ISAS | JAPAN |
KAZUTAKA YAMAOKA | ISAS | JAPAN |
KAZUMI ASAI | ISAS | JAPAN |
KEN EBISAWA | NASA/GSFC | USA |
KYOKO OKADA | RIKEN/SPRING8 | JAPAN |
TARGETS
TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
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1)IC342 SOURCE 1 | A | 56.4792 | 68.0847 | 300 ks | N | Y | P | 0.20000 | 1 |