SUMMARY OF PROPOSAL 52095
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
A STUDY OF THE X-RAY SPECTRUM AND MORPHOLOGY OF CTA1
ABSTRACT
ROSAT observations of CTA1 reveal a center-filled SNR whose morphology and spectrum suggest the presence of a central pulsar. The spectral characteristics suggest a dominant central synchrotron nebula accompanied by a thermal perimeter which extends to the radio shell. Our ASCA observation of the central region confirms the nonthermal nature of this emission. Here we propose an ASCA observation along the bright southern radio shell. The observation will confirm or refute the thermal nature of the emission from the outer regions. If confirmed, it will provide a determination of the thermal characteristics of the blast wave region and allow a comparison of the central engine energetics with the dynamical properties of the blast wave to provide a broad picture of the SNR development.
CO-INVESTIGATORS
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)CTA1 - SOUTH | 2 | 1.7500 | 72.3667 | 60 ks | N | N | P | 0.09000 | 1 |
TARGET 1
CONTACT PI FOR DETAILED POINTING INFORMATION ONCE SPACECRAFT ROLL ANGLE IS DETERMINED. BRIGHT 2-CCD MODE ACCEPTABLE DURING MEDIUM BIT RATE.