SUMMARY OF PROPOSAL 52096
SMITHSONIAN ASTROPHYSICAL OBSERVATORY
60 GARDEN STREET
CAMBRIDGE
MASSACHUSETTS/MIDDLESEX USA 02138
Tel: 617-495-7256 Fax: 617-495-7356
Medium: 4GBDAT
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION
AN X-RAY STUDY OF THE SUPERNOVA REMNANT G347.5-0.5
ABSTRACT
G347.5-0.5 is a newly discovered supernova remnant from the ROSAT All-Sky Survey. While it is one of the brightest X-ray remnants known, spectral studies from a short pointed observation with the PSPC cannot differentiate between temperature scenarios which imply vastly different evolutionary states. The remnant may be relatively young with a very high temperature or it may be of moderate age but with very large absorption. We propose a 50 ks ASCA observation in raster mode to map the entire remnant and provide sufficiently rich spectra to permit a detailed study of the evolutionary characteristics of the SNR.
CO-INVESTIGATORS
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)G347.5-0.5 NW | 1 | 258.1000 | -39.5833 | 10 ks | N | N | P | 1.20000 | 1 |
| 2)G347.5-0.5 SW | 1 | 258.2500 | -39.9000 | 10 ks | N | N | P | 1.30000 | 1 |
| 3)G347.5-0.5 NE | 1 | 258.6458 | -39.5833 | 10 ks | N | N | P | 1.10000 | 1 |
| 4)G347.5-0.5 SE | 1 | 258.9500 | -40.0333 | 20 ks | N | N | P | 0.40000 | 1 |
TARGET 1
USE COMPLIMENTARY CHIPS ON SIS DETECTORS. BRIGHT 2-CCD MODE IS ACCEPTABLE FOR MEDIUM BIT RATE. CONTACT PI FOR DETAILED POINTING ONCE SPACECRAFT ROLL IS DETERMINED.
TARGET 2
USE COMPLIMENTARY CHIPS ON SIS DETECTORS. BRIGHT 2-CCD MODE IS ACCEPTABLE FOR MEDIUM BIT RATE. CONTACT PI FOR DETAILED POINTING ONCE SPACECRAFT ROLL IS DETERMINED.
TARGET 3
USE COMPLIMENTARY CHIPS ON SIS DETECTORS. BRIGHT 2-CCD MODE IS ACCEPTABLE FOR MEDIUM BIT RATE. CONTACT PI FOR DETAILED POINTING ONCE SPACECRAFT ROLL IS DETERMINED.
TARGET 4
USE COMPLIMENTARY CHIPS ON SIS DETECTORS. BRIGHT 2-CCD MODE IS ACCEPTABLE FOR MEDIUM BIT RATE. CONTACT PI FOR DETAILED POINTING ONCE SPACECRAFT ROLL IS DETERMINED.