SUMMARY OF PROPOSAL 62092

SANGWOOK PARK
PARKSAN@PURDS1.PHYSICS.PURDUE.EDU

PURDUE UNIVERSITY
1396 PHYSICS BUILDING
WEST LAFAYETTE
IN. USA 47907-1396
Tel: 765-494-5396 Fax: 765-494-0706
Medium: 2GBDAT
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION

SHADOWS IN THE VOID: THE DIFFUSE X-RAY BACKGROUND IN THE GALACTIC PLANE


ABSTRACT

Recent studies of mosaics of ROSAT PSPC pointed observations have detected 0.5 to 2.0 keV X-ray shadows in the diffuse X-ray background (DXB) cast by distant molecular gas in the Galactic plane. The results imply that the observed DXB in the Galactic plane consists of multiple components of Galactic hot gas. The poor spectral capability of the ROSAT PSPC, however, restricted the spectral study of these Galactic DXB components. We, thus, propose ASCA observations for an extensive spectral study of the DXB in the Galactic plane. This program will, for the first time, reveal detailed spectral properties of the DXB component which is distributed up to ~3 kpc along the line of sight in the Galactic plane by improving statistics by an order of magnitude than was possible with ROSAT data.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
JOHN FINLEYPURDUE UNIVERSITYUSA

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
2)G25_SH_1
2
278.7833 -6.1539 40 ksN
N
P
0.23000
1