SUMMARY OF PROPOSAL 61066
UNIVERSITY OF TOKYO
TOKYO JAPAN 113
BUNKYO-KU
7-3-1 HONGO
Tel: 03-3812-2111 EX4173 Fax: 03-3812-6938
Medium: 2.5GB8MM
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION
HIGH-LATITUDE EMISSION OF THE GALACTIC RIDGE X-RAYS
ABSTRACT
We propose to observe the off-plane regions of the Scutum Arm (l = 28) at the latitudes of b = 3--4 deg. From the past observations with ASCA, we detected another diffuse faint non-thermal-like component in addition to the well-known GRXE thermal component of temperature kT = 3--10 keV. This powerlaw-like component extends toward higher latitudes than the thermal component. GINGA also detected a similar "hard tail" component in the Galactic ridge X-ray spectra. Therefore, it is highly possible that the power-like component is identical with the "hard tail" and thus truly of non-thermal origin. In order to further discuss the origin of the power-like component, we need off-plane observations at higher latitudes.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| KAZUO MAKISHIMA | UNIVERSITY OF TOKYO | JAPAN |
| KEIICHI MATSUZAKI | UNIVERSITY OF TOKYO | JAPAN |
| SHIGEO YAMAUCHI | IWATE UNIVERSITY | JAPAN |
| NORIKO YAMASAKI | TOKYO METRO. UNIV. | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)GALACTIC OFF-PLANE#1 | 2 | 278.1054 | -2.8814 | 20 ks | N | Y | P | 0.04000 | 1 |
| 2)GALACTIC OFF-PLANE#2 | 2 | 278.3808 | -2.3492 | 20 ks | N | Y | P | 0.04000 | 1 |
| 3)GALACTIC OFF-PLANE#3 | 2 | 277.5721 | -2.6055 | 20 ks | N | Y | P | 0.04000 | 1 |
| 4)GALACTIC OFF-PLANE#4 | 2 | 277.8475 | -2.0736 | 20 ks | N | Y | P | 0.04000 | 1 |