SUMMARY OF PROPOSAL 61060
KYOTO UNIVERSITY
KYOTO JAPAN 606-01
KYOTO
KITASHIRAKAWA-OIWAKE-CHO SAKYO-KU
Tel: +81-75-753-3867 Fax: +81-75-701-5377
Medium: 2.5GB8MM
Subject: X-RAY BINARIES
UNIDENTIFIED HARD X-RAY SOURCES NEAR THE GALACTIC CENTER
ABSTRACT
The Galactic Center region is a treasury of X-ray stars. We here focus the unidentified hard X-ray sources --- probably a black-hole candidate (BHC). A few BHCs in the Galactic Center region is eccentric and out of the general scheme of BHCs. There exists possibly an another category of BHCs. We try to make clear the hypothesis by investigating some unidentified BHCs. On the other hand, measuring X-ray absorption is the good method to study the mass from the source to us. We have made an effort to study the mass distribution of our Galaxy by this method with ASCA data, and succeeded to an extent, though the sample is rather less. In this work, we expect to increase the number of samples, and will be able to estimate the mass distribution much exactly.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| KATSUJI KOYAMA | KYOTO UNIVERSITY | JAPAN |
| YOSHITOMO MAEDA | KYOTO UNIVERSITY | JAPAN |
| TADAYASU DOTANI | ISAS | JAPAN |
| KAZUMI ASAI | ISAS | JAPAN |
| HITOSHI NEGORO | RIKEN | JAPAN |
| JUN YOKOGAWA | KYOTO UNIVERSITY | JAPAN |
| MAMIKO NISHIUCHI | KYOTO UNIVERSITY | JAPAN |
| HIROSHI MURAKAMI | KYOTO UNIVERSITY | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)GRS 1734-292 | 3 | 264.3617 | -29.1507 | 30 ks | N | Y | P | 0.80000 | 1 |