SUMMARY OF PROPOSAL 61011
RIKEN
SAITAMA JAPAN 351-01
WAKO
2-1 HIROSAWA
Tel: 048-467-9336 Fax: 048-462-4640
Medium: 4GBDAT
Subject: STARS
A SEARCH FOR X-RAY COUNTERPARTS OF UNIDENTIFIED GEV SOURCES IN THE SOUTHERN SKY
ABSTRACT
The nature of unidentified Galactic gamma-ray sources remains a central puzzle in high energy astrophysics. We propose here exposures of three EGRET error boxes to complete the X-ray survey of flux-limited sample of galactic GeV sources in the southern sky. These GeV source have error boxes small enough for ASCA, and have hard spectra similar to known gamma-ray pulsars. ASCA's spectral sensitivity and modest spatial resolution provides the key observations to select any pulsar source responsible for the GeV emission with detection of pulsar powered nebula. Correlative studies in the radio allow us to exclude AGN and other proposed models. These data will greatly advance the identification of the galactic plane sources as a class. TeV and radio follow-ups are planed for counterparts.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| ROGER ROMANI | STANFORD UNIV. | USA |
| YOSHITAKA SAITO | ISAS | JAPAN |
| TAKAHIKO HORIUCHI | CHIBA UNIV. | JAPAN |
| TADASHI KIFUNE | ICRR, UNIV. TOKYO | JAPAN |
| SHINPEI SHIBATA | YAMAGATA UNIV. | JAPAN |
| MALLORY ROBERTS | STANFORD UNIV. | USA |
| VICTORIA KASPI | MIT | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)GEV 1837-0611 | 2 | 279.3037 | -6.1835 | 40 ks | N | N | P | 0.04000 | 1 |
| 2)GEV 1025-5803 | 2 | 156.4913 | -58.0620 | 40 ks | N | N | P | 0.04000 | 1 |