SUMMARY OF PROPOSAL 52071
UNIVERSITY OF CALIFORNIA
CENTENNIAL DR. & GRIZZLY PEAK BLVD.
BERKELEY
CA USA 94720-7450
Tel: 510 643 9173 Fax: 510 643 8302
Medium: 4GBDAT
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION
IDENTIFYING SGR1900+14, THE THIRD SOFT GAMMA REPEATER, WITH ASCA
ABSTRACT
The soft gamma repeaters (SGRs) appear to be related to young neutron stars in supernova remnants. They have characteristics which distinguish them quite clearly from the gamma-ray bursters, whose origin remains a mystery. Much of the breakthrough in understanding the SGRs has come from soft X-ray observations in general, and ASCA observations in particular. However, SGR1900+14, the 3rd of the three known SGRs, has never been observed by ASCA, although it is known to be a soft X-ray source from ROSAT HRI observations. We show how an ASCA observation could substantially advance our understanding of this SGR, and help to determine its relation to a peculiar IR source which it lies close to.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| T. MURAKAMI | ISAS | JAPAN |
| C. KOUVELIOTOU | MSFC | USA |
| S. KULKARNI | CALTECH | USA |
| P. LI | UCB SSL | USA |
| F. VRBA | USNO | USA |
| C. LUGINBUHL | USNO | USA |
| A. YOSHIDA | RIKEN | JAPAN |
| R. SHIBATA | ISAS | JAPAN |
| J. VANPARADIJS | UAH | USA |
| I. SMITH | RICE UNIVERSITY | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)SGR1900+14 | 2 | 286.8083 | 9.3219 | 80 ks | N | Y | P | 0.04000 | 1 |