SUMMARY OF PROPOSAL 52078
CALTECH
105-24
PASADENA
CA USA 91125
Tel: 818-395-4010 Fax: 818-568-9352
Medium: 2GB8MM
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION
OBSERVATIONS OF THE CRAB-LIKE PLERION G 54.1+0.3
ABSTRACT
The association of neutron stars with supernova remnants (SNR) is a cornerstone of stellar astrophysics. However, radio pulsars are confirmed to be associated with only a dozen Galactic remnants. Fortunately, an indirect, but equally effective way to infer the presence of a central neutron star in a SNR is by observations of pulsar powered synchrotron nebulae (or ``plerions''). Moreover it turns out that a complete census of Galactic plerions would shed much desired light on birth parameters of neutron stars. Herein we propose to observe the Crab-like plerion G\~{}54.1+0.3. This distant source has a hard X-ray spectrum, as observed by EINSTEIN and ROSAT, due to heavy foreground absorption. ASCA's hard X-ray capabilities would help measure the plerion energy output, determine its age
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| G. VASISHT | CALTECH | USA |
| M. MAKASHIMA | U. TOKYO | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)G 54.1+0.3 | 2 | 292.6625 | 18.8725 | 20 ks | N | N | P | 0.18000 | 1 |
TARGET 1
GIS: PH=8 XP=6 RT=0 TIM=10